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Nuclear Science and Techniques 2023年第2期34卷 98-108页

作者： xue‑neng cao Xian‑Xian Zhou Ming Fu Xin‑Xing Shi School of Management Science and Engineering Anhui University of Finance and EconomicsBengbu 233030China School of Mechanics and Optoelectronic Physics Anhui University of Science and TechnologyHuainan 232001China

The properties of exotic nuclei are the focus of the present ***-neutron halo structures of neutron-rich17,19B were experimentally *** studied the formation mechanism of halo phenomena in17,19B using the complex momentum representation method applied to deformation and continuum *** examining the evolution of the weakly bound and resonant levels near the Fermi surface,s–d orbital reversals and certain prolate deformations were *** addition,by analyzing the evolution of the occupation probabilities and density distributions occupied by valence neutrons,we found that the ground state of15B did not exhibit a halo and the ground states of17B and19B exhibited halos at 0.6≤β2≤0.7 and0.3≤β2≤0.7,*** low-l components in the valence levels that are weakly bound or embedded in the continuous spectrum lead to halo formation.

关键词： Quadrupole deformation Resonant states Complex momentum representation Halo

How should congenital absence of cruciate ligaments be treated? A case report and literature review

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World Journal of Clinical Cases 2019年第19期7卷 3082-3089页

作者： Ran Lu Dong-Ping Zhu neng Chen He Sun Ze-Hui Li xue-Wei cao Department of Orthopedics Guangdong Provincial Hospital of Traditional Chinese Medicine

BACKGROUND Hypoplasia of bilateral cruciate ligaments is a rare congenital *** diagnosis of such diseases and indications for the various treatment options require further analysis and *** SUMMARY The patient is a 26-year-old Chinese woman who has been suffering from knee pain since the age of 8 years,2-3 episodes a *** years ago,due to the practice of advanced yoga poses,the frequency of left knee pain increased,requiring prompt medical *** resonance imaging demonstrated an absence of both anterior and posterior cruciate ligaments of both knees with abnormal posterior tilting of the tibial *** subluxation of the knee joint was also found,therefore tibial osteotomy was *** patient reported at the 24 mo follow-up that the frequency of pain and instability had been reduced and function *** Osteotomy may be an effective method to treat patients with congenital cruciate ligament deficiency with posterior tibial plateau *** diagnosis of congenital cruciate ligament deficiency shall be based on the combination of patient’s medical history,clinical manifestations,and findings from imaging to avoid possible *** on the symptoms,frequency of attacks,and intent of the individual,appropriate treatment options shall be identified.

关键词： Congenital Dysplasia Cruciate ligament Congenital deformity Osteotomy Case report

Size-dependent thermoelasticity of a finite bi-layered nanoscale plate based on nonlocal dual-phase-lag heat conduction and Eringen's nonlocal elasticity

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Applied Mathematics and Mechanics(English Edition) 2021年第1期42卷 1-16页

作者： Zhangna xue Gongqi cao Jianlin LIU College of Pipeline and Civil Engineering China University of Petroleum(East China)Qingdao 266580Shandong ProvinceChina

The size effects on heat conduction and elastic deformation are becoming significant along with the miniaturization of the device and wide application of ultrafast *** this work,to better describe the transient responses of nanostructures,a size-dependent thermoelastic model is established based on nonlocal dual-phase-lag(N-DPL)heat conduction and Eringen's nonlocal elasticity,which is applied to the one-dimensional analysis of a finite bi-layered nanoscale plate under a sudden thermal *** the numerical part,a semi-analytical solution is obtained by using the Laplace transform method,upon which the effects of size-dependent characteristic lengths and material properties of each layer on the transient responses are discussed *** results show that the introduction of the elastic nonlocal parameter of Medium 1 reduces the displacement and compressive stress,while the thermal nonlocal parameter of Medium 1 increases the deformation and compressive *** findings may be beneficial to the design of nano-sized and multi-layered devices.

关键词： thermoelasticity size effect multi-layered nanostructure

Ensemble relation network with multi-level measure

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The Journal of China Universities of Posts and Telecommunications 2022年第3期29卷 15-24,33页

作者： Li Xiaoxu Qu xue cao Jie College of Computer and Communication Lanzhou University of TechnologyLanzhou 730050China College of Electrical and Information Engineering Lanzhou University of TechnologyLanzhou 730050China Engineering Research Center of Urban Railway Transportation of Gansu Province Lanzhou 730050China

Fine-grained few-shot learning is a difficult task in image classification. The reason is that the discriminative features of fine-grained images are often located in local areas of the image, while most of the existing few-shot learning image classification methods only use top-level features and adopt a single measure. In that way, the local features of the sample cannot be learned well. In response to this problem, ensemble relation network with multi-level measure(ERN-MM) is proposed in this paper. It adds the relation modules in the shallow feature space to compare the similarity between the samples in the local features, and finally integrates the similarity scores from the feature spaces to assign the label of the query samples. So the proposed method ERN-MM can use local details and global information of different grains. Experimental results on different fine-grained datasets show that the proposed method achieves good classification performance and also proves its rationality.

关键词： fine-grained image classification few-shot learning local feature learning metric learning

Impact of inter-particle collision on elbow erosion based on DSMC-CFD method

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Petroleum Science 2021年第3期18卷 909-922页

作者： Xiao-Yang Sun xue-Wen cao College of Pipeline and Civil Engineering China University of PetroleumQingdao 266580China

In this work,computational fuid dynamics(CFD)is used to study elbow erosion due to a gas-solid two-phase *** particular,the direct simulation Monte Carlo(DSMC)method is used to study the impact of inter-particle collision on the erosion *** two-way coupled Euler-Lagrange method is used to solve the gas-solid fow,and the DSMC method is used to consider the collision behavior between *** efects of key factors,such as the particle concentration distribution and inter-particle collision,on the erosion ratio are evaluated and *** efectiveness of the method is verifed from experimental *** results show that the inter-particle collision signifcantly infuences the particle movement path and erosion *** the inter-particle collision is considered,the maximum erosion position is *** erosion model proposed by Oka et al.,who used the DSMC method,agrees best with the experimental data,and the average percentage error decreases from 39.2 to 27.4%.

关键词： Elbow CFD DSMC Solid particle erosion Inter-particle collision

Planar Li growth on Li_(21)Si_(5)modified Li metal for the stabilization of anode

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Journal of Materials Science & Technology 2021年第17期76卷 156-165页

作者： Liuyang cao xue Cheng Hongjie Xu Guoqin cao Junhua Hu Guosheng Shao School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China State Center for International Cooperation on Designer Low-Carbon&1 Environmental Materials(CDLCEM) Zhengzhou UniversityZhengzhou 450001China Zhengzhou Materials Genome Institute(ZMGI) Xingyang 450100China Institute for Renewable Energy and Environmental Technologies University of BoltonBolton BL35ABUK

Lithium(Li)metal is widely considered the ultimate anode for future rechargeable ***,dendritic growth and related parasitic reactions during long-term cycling often lead to severe safety hazards and catastrophic ***,we fabricate a hybrid anode by coating single-phase Li_(21)Si_(5)on lithium *** resultant electrodes show a stable cycle and depressed polarization in symmetric and half cells.A planar plating/stripping behavior is observed on the modified *** investigation of the interplay of Li and Li_(21)Si_(5)shows relatively large adsorption energy in the Li-Si *** deposition and stripping are surface processes,and Li_(21)Si_(5)maintains its intrinsic phase *** deposited Li layer around Li_(21)Si_(5)also has the advantage of diminished preferred orientation,which also contributes to the planar growth of *** LiFePO4(LFP)and LiNi1/3Co1/3 Mn1/3O2(NCM)cathodes were applied to further demonstrate the enhanced rate and cycle performance.

关键词： Lithium anode Planar growth Density functional theory Core-shell structure Adsorption energy

Anti-parity-time symmetric phase transition in diffusive systems

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Chinese Physics B 2021年第3期30卷 9-16页

作者： Pei-Chao cao xue-Feng Zhu School of Physics and Innovation Institute Huazhong University of Science and TechnologyWuhan 430074China

Parity-time (PT) symmetry/anti-parity-time (APT) symmetry in non-Hermitian systems reveal profound physics andspawn intriguing effects. Recently, it has been introduced into diffusive systems together with the concept of exceptionalpoints (EPs) from quantum mechanics and the wave systems. With the aid of convection, we can generate complex thermalconductivity and imitate various wavelike dynamics in heat transfer, where heat flow can be “stopped” or moving against thebackground motion. Non-Hermitian diffusive systems offer us a new platform to investigate the heat wave *** this review, we first introduce the construction of APT symmetry in a simple double-channel toy model. Then we showthe phase transition around the EP. Finally, we extend the double-channel model to the four-channel one for showing thehigh-order EP and the associated phase transition. In a general conclusion, the phase difference of adjacent channels isalways static in the APT symmetric phase, while it dynamically evolves or oscillates when the APT symmetry is broken.

关键词： anti-parity-time symmetry phase transition exceptional point heat transfer

An efficient synthesis of ampicillin on magnetically separable immobilized penicillin G acylase

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Chinese Chemical Letters 2010年第7期21卷 765-768页

作者： Ping xue Xiao Dan Song xue Rong cao Key Laboratory of Energy Resources&Chemical Engineering Ningxia UniversityYinchuan 750021China

Penicillin G acylase(PGA) was immobilized on the magnetic hydrophilic polymer microspheres with average pore size of 17.1 nm,specific surface area of 128.2 m2/g and saturate magnetization of 6.4 emu/*** 96.7%ampicillin yield with 1.60 of the synthesis/hydrolysis(S/H) ratio from 6-aminopenicillanic acid(6-APA) and D-(-)-alpha-phenylglycine methyl ester(D-PGME) can be achieved using the resultant magnetic biocatalyst in ethylene glycol,where only 82.1%yield with 1.40 of the S/H ratio was obtained using the free PGA under the identical reaction *** immobilized PGA can be separated magnetically and recycled for five times without obvious loss of its catalytic activity.

关键词： Immobilized penicillin G acylase Magnetic polymer microspheres Ampicillin synthesis Reusability

Non-homogeneous Tb Theorem for Bi-parameter g-function

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Acta Mathematica Sinica,English Series 2018年第9期34卷 1445-1459页

作者： Ming Ming cao Qing Ying xue School of Mathematical Sciences Beijing Normal University Laboratory of Mathematics and Complex Systems Ministry of Education

The main result of this paper is a bi-parameter Tb theorem for Littlewood-Paley g-function, where b is a tensor product of two pseudo-accretive function. Instead of the doubling measure, we work with a product measure μ = μn × μm, where the measures μn and μm are only assumed to be upper doubling. The main techniques of the proof include a bi-parameter b-adapted Haar function decomposition and an averaging identity over good double Whitney regions. Moreover, the non-homogeneous analysis and probabilistic methods are used again.

关键词： Bi-parameter square function probabilistic method b-adapted Haar functions

A robust shell element in meshfree SPH method

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Acta Mechanica Sinica 2013年第2期29卷 241-255页

作者： Fu-Ren Ming A-Man Zhang xue-Yan cao College of Shipbuilding Engineering Harbin Engineering University

With the incorporation of total Lagrangian smoothed particle hydrodynamics（SPH） method equation and moving least square（MLS） function,the traditional SPH method is improved regarding the stability and *** on Mindlin-Ressiner plate theory,the SPH method simulating dynamic behavior via one layer of particles is applied to plate＇s mid-plane,i.e.,a SPH shell model is ***,through comparative analyses on the dynamic response of square,stiffened shells and cylindrical shells under various strong impact loads with common finite element software,the feasibility,validity and numerical accuracy of the SPH shell method are ***,further researches on SPH shell may well pave the way towards solving problems involving dynamic plastic damage,tearing or even crushing.

关键词： SPH shell Total Lagrangian equation Moving least square (MLS) Stability Consistency Stress point