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International Journal of Minerals,Metallurgy and Materials 2018年第9期25卷 1018-1026页

作者： Chong lin shu-sen Wu shu-lin Lü Ping An He-bao Wu State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology Hubei Provincial Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety Wuhan Institute of Technology

The effects of high pressure rheo-squeeze casting(HPRC) on the Fe-rich phases(FRPs) and mechanical properties of Al-17 Si-(1,1.5)Fe alloys were investigated. The alloy melts were first treated by ultrasonic vibration(UV) and then formed by high-pressure squeeze casting(HPSC). The FRPs in the as-cast HPSC Al-17 Si-1 Fe alloys only contained a long, needle-shaped β-Al5 Fe Si phase at 0 MPa. In addition to the β-Al5 Fe Si phase, the HPSC Al-17 Si-1.5 Fe alloy also contained the plate-shaped δ-Al4 Fe Si2 phase. A fine, block-shaped δ-Al4 Fe Si2 phase was formed in the Al-17 Si-1 Fe alloy treated by UV. The size of FRPs decreased with increasing pressure. After UV treatment, solidification under pressure led to further refinement of the FRPs. Considering alloy samples of the same composition, the ultimate tensile strength(UTS) of the HPRC samples was higher than that of the HPSC samples, and the UTS increased with increasing pressure. The UTS of the Al-17 Si-1 Fe alloy formed by HPSC exceeded that of the Al-17 Si-1.5 Fe alloy formed in the same manner under the same pressure. Conversely, the UTS of the Al-17 Si-1 Fe alloy formed by HPRC decreased to a value lower than that of the Al-17 Si-1.5 Fe alloy formed in the same manner.

关键词： high pressure rheo-squeeze casting Al-17Si-(1,1.5)Fe alloys Fe-rich phases mechanical properties

Internal Conversion Process of Chlorophyll a in Solvents in Femtosecond Pump-Probe Laser Fields

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Chinese Journal of Chemical Physics 2008年第3期21卷 211-216页

作者： Kai Niu Li-qing Dong shu-lin Cong Department of Physics Dalian University of Technology Dalian 116024 China

The internal conversion （IC） processes of chlorophyll a （chl-a） in solvents are studied based on the reduced density matrix theory. The IC times can be obtained by simulating the experimental fluorescence depletion spectra （FDS）. The calculated IC times of chl-a in ethyl acetate, tetrahydrofuran and dimethyl formamide are 141, 147, and 241 fs, respectively. The oscillation feature of the FDS results from the forward and backward transfer of the population between coupled electronic states. The effects of diabatic coupling between two electronic states on the IC time and the FDS are described. The influence of molecule-reservoir coupling on the IC time is also investigated.

关键词： Fluorescence depletion spectrum Internal conversion Reduced density matrix

Host susceptibility to persistent hepatitis B virus infection

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World Journal of Gastroenterology 2006年第30期12卷 4788-4793页

作者： Ying-Li He Ying-Ren Zhao shu-lin Zhang shu-Mei lin Department of Infectious Diseases the First Hospital of Xi'an Jiaotong University Xi'an 710061 Shaanxi Province China

Genetic epidemiology researches such as twin studies, family-clustering of hepatitis B virus （HBV） infection studies and ethnic difference studies have provided the evidence that host genetic factors play an important role in determining the outcome of HBV infection. The opening questions include which human genes are important in infection and how to find them. Though a number of studies have sought genetic associations between HBV infection/persistence and gene polymorphisms, the candidate gene-based approach is clearly inadequate to fully explain the genetic basis of the disease. With the advent of new genetic markers and automated genotyping, genetic mapping can be conducted extremely rapid. This approach has been successful in some infectious diseases. linkage analysis can find host genes susceptible to HBV and is of great clinical importance.

关键词： Hepatitis B virus Susceptibility Association study linkage study

Holographic magnetized chiral density wave

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Chinese Physics C 2018年第11期42卷 85-92页

作者： Yanyan Bu shu lin School of Physics and Astronomy Sun Yat-Sen UniversityZhuhai 519082China Department of Physics Harbin Institute of TechnologyHarbin 150001China

We explore the end point of the helical instability in a finite density, finite magnetic field background discussed by Kharzeev and Yee. The nonlinear solution is obtained and identified with the （magnetized） chiral density wave phase in the literature. We find there are two branches of solutions, which match the two unstable modes found before. At large chemical potential and magnetic field, the magnetized chiral density wave can be thermodynamically preferred over the chirally symmetric phase and chiral symmetry breaking phase. Interestingly, we find an exotic state with vanishing chemical potential at large magnetic field. We also attempt to clarify the role of anomalous charge in the holographic model.

关键词： chiral density wave holography axial anomaly

Longitudinal dynamics from hydrodynamics with an order parameter

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Chinese Physics C 2021年第4期45卷 265-272页

作者： shu lin Gezheng Zhou School of Physics and Astronomy Sun Yat-Sen UniversityZhuhai 519082China

We studied coupled dynamics of hydrodynamic fields and order parameter in the presence of nontrivial longitudinal flow using the chiral fluid dynamics *** found that longitudinal expansion provides an effective relaxation for the order parameter,which equilibrates in an oscillatory *** oscillations are also visible in hydrodynamic degrees of freedom through coupled *** oscillations are reduced when dissipation is *** also found that the quark density,which initially peaked at the boundary of the boost invariant region,evolves toward forward rapidity with the peak velocity correlated with the velocity of longitudinal *** peak broadens during this *** corresponding chemical potential rises due to simultaneous decrease of density and *** compared the cases with and without dissipation for the order parameter and also the standard hydrodynamics without order *** found that the corresponding effects on temperature and chemical potential can be understood from the conservation laws and different speeds of equilibration of the order parameter in the three cases.

关键词： relativistic hydrodynamics linear sigma model chiral phase transition heavy ion collisions equilibration

Phase-dependent lithium-alloying reactions for lithium-metal batteries

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Chinese Chemical Letters 2024年第4期35卷 1-2页

作者： shu lin Kezhen Qi College of Pharmacy Dali UniversityDali 671000China

With the increasing demand for higher energy lithium-ion batteries (LIBs), it is imperative to develop high-capacity electrode materials [1–4]. Due to the unique electrochemical Li-alloying reactions, Li-alloys offer high theoretical capacity, especially lithiumrich phase alloys, which exceeds the theoretical capacity of graphite anodes [5–7]. Phase-transition, which significantly influences lithium alloy reactions, determines high voltage hysteresis,low Coulombic efficiency (CE), and short cycling life [8,9].

关键词： alloying alloys cycling

Analysis of Safe Span Length and Fatigue Life of Submarine Pipelines

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China Ocean Engineering 2020年第1期34卷 119-130页

作者： HE Zhang-feng WEI Yuan LIU shu-lin School of Mechatronic Engineering and Automation Shanghai University

Owing to the complex environmental conditions, suspension could induce complicated forces on submarine pipelines and even cause vortex-induced vibration, resulting in fatigue damage of pipelines. Through aiming at the 28-inch submarine pipeline in the East China Sea, the pipeline was segmented according to the similarity, considering the factors of pipe assembly, typhoon, current, wave and seabed topography. The effects of span length on natural frequency in each section of submarine pipeline were analyzed by finite element model. The maximum safe span length allowed by each pipeline section was verified by fatigue cumulative damage theory, and the fatigue life of each pipeline section were predicted. The results showed that each order natural frequency of the pipeline decreased with the increase of span length. The calculated results of empirical formulas were much smaller than those of the FEM analysis. The increase of the gap between the suspended pipeline and the seabed was beneficial to enhance the fatigue life of the suspended pipeline.

关键词： submarine pipeline safe span length fatigue life vortex-induced vibration

A fast network partition method for large-scale urban traffic networks

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控制理论与应用（英文版） 2013年第3期11卷 359-366页

作者： Zhao ZHOU shu lin Yugeng XI Department of Automation Shanghai Jiao Tong University and Key Laboratory of System Control and Information Processing Ministry of Education

In order to control the large-scale urban traffic network through hierarchical or decentralized methods, it is necessary to exploit a network partition method, which should be both effective in extracting subnetworks and fast to compute. In this paper, a new approach to calculate the correlation degree, which determines the desire for interconnection between two adjacent intersections, is first proposed. It is used as a weight of a link in an urban traffic network, which considers both the physical characteristics and the dynamic traffic information of the link. Then, a fast network division approach by optimizing the modularity, which is a criterion to distinguish the quality of the partition results, is applied to identify the subnetworks for large-scale urban traffic networks. Finally, an application to a specified urban traffic network is investigated using the proposed algorithm. The results show that it is an effective and efficient method for partitioning urban traffic networks automatically in real world.

关键词： Traffic signal control Large-scale urban traffic networks Network partition

Zero Extension for the Biharmonic Equation

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Acta Mathematica Sinica,English Series 2018年第10期34卷 1549-1562页

作者： Shao Peng XU shu lin ZHOU School of Mathematical Sciences Peking University Beijing 100871 P. R. China LMAM School of Mathematical Sciences Peking University Beijing 100871 P. R. China

In this paper we present a necessary and sufficient condition to guarantee that the extended function of the solution by zero extension for the biharmonic equation in a smaller domain is still the solution of the corresponding extension problem in a larger domain. We prove the results under the frameworks of classical solutions and strong solutions.

关键词： Biharmonic zero extension

A synthetic optically pumped gradiometer for magnetocardiography measurements

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Chinese Physics B 2020年第4期29卷 215-217页

作者： shu-lin Zhang Ning Cao Joint Laboratory of Bioimaging Technology and Applications CAS-SIMIT&MEDIShanghai 201899China State Key Laboratory of Functional Materials for Informatics Institute of Microsystem and Information Technology(SIMIT)Chinese Academy of Sciences(CAS)Shanghai 200050China Centre for Excellence in Superconducting Electronics Chinese Academy of SciencesShanghai 200050China Shanghai Medi Instruments Ltd. Shanghai 201899China

Magnetocardiography(MCG)measurement is important for investigating the cardiac biological ***,the extremely weak MCG signal was detected by using superconducting quantum interference devices(SQUIDs).As a room-temperature magnetic-field sensor,optically pumped magnetometer(OPM)has shown to have comparable sensitivity to that of SQUIDs,which is very suitable for biomagnetic *** this paper,a synthetic gradiometer was constructed by using two OPMs under spin-exchange relaxation-free(SERF)conditions within a moderate magnetically shielded room(MSR).The magnetic noise of the OPM was measured to less than 70 fT/Hz1/*** a baseline of 100 mm,noise cancellation of about 30 dB was *** was successfully measured with a signal to noise ratio(SNR)of about 37 *** synthetic gradiometer technique was very effective to suppress the residual environmental fields,demonstrating the OPM gradiometer technique for highly cost-effective biomagnetic measurements.

关键词： optically pumped magnetometer(OPM) magnetocardiography(MCG) gradiometer