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Chiral phase diagram of strongly interacting matter at finite volume

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Science China(Physics,Mechanics & Astronomy) 2018年第8期61卷 93-96页

作者： Chao Shi yonghui xia WenBao Jia HongShi Zong Department of Physics Nanjing University College of Materials Science and Engineering Nanjing University of Aeronautics and Astronautics Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy Sciences Joint Center for Particle Nuclear Physics and Cosmology

At extremely high temperature T～200 Me V and low chemical potentialμ,the quarks and gluons get released from the nucleon and form the quark-gluon plasma(QGP)state,which is accessible in the heavy ion collisions(HIC)globally[1,2].Theoretically,ab initio lattice QCD simulation found the transition from hadrons to QGP at lowμis continuous crossover instead of phase *** this connection,RHIC is running the beam energy scan program to look into the territory with higherμ[3].One important goal is to determine if there is the first order phase transition as expected by many model studies and locate the critical end point(CEP)if it exists.

关键词：有限体积物质交往 initio 阶段转变重离子碰撞 RHIC 扫描程序

In Vivo Study on Degradation Behavior and Histologic Response of Pure Magnesium in Muscles

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Journal of Materials Science & Technology 2017年第5期33卷 469-474页

作者： Shanshan Chen Lili Tan Bingchun Zhang yonghui xia Ke Xu Ke Yang Institute of Metal Research Chinese Academy of Sciences Department of Radiology The First Affiliated Hospital of China Medical University Key Laboratory of Diagnostic Imaging and Interventional RadiologyLiaoning Province

When an orthopedics device is implanted into bone injury site, it will contact the soft tissue （skeletal muscle, fascia, ligament etc.） except for bone. Magnesium based biodegradable metals are becoming an important research object in orthopedics due to their bioactivity to promote bone healing. In this study, pure Mg rods with and without chemical conversion coating were implanted into the muscle tissue of rabbits. Implants and their surrounding tissues were taken out for weight loss measurement, cross- sectional scanning electron microscopy observation, elemental distribution analysis and histological examination. The results showed that the chemical conversion coating would increase the in vivo cor- rosion resistance of pure Mg and decrease the accumulation of calcium （Ca） and phosphorus （P） elements around the implants. For the bare magnesium implant, both Ca and P contents in the surrounding tissues increased at the initial stage of implantation and then decreased at 12 weeks implantation, while for the magnesium with chemical conversion coating, Ca and P contents in the surrounding tissues de- creased with the implantation time, but were not significant. The histological results demonstrated that there was no calcification in the muscle tissue with implantation of magnesium for up to 12 weeks. The chemical conversion coating not only increased the in vivo corrosion resistance of pure Mg, but also avoided the depositions of Ca and P in the surrounding tissues, meaning that pure magnesium should be biosafe when contacting with muscle tissues,

关键词： Pure magnesium Degradation behavior Histologic response Muscle tissue

Finite volume effects on the QCD chiral phase transition in the finite size de-pendent Nambu-Jona-Lasinio model

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Chinese Physics C 2019年第3期43卷 43-48页

作者： yonghui xia Qingwu Wang Hongtao Feng Hongshi Zong Department of physics Nanjing UniversityNanjing 210093China Department of physics Sichuan UniversityChengdu 610064China School of physics Southeast UniversityNanjing 210093China Joint Center for Particle Nuclear Physics and CosmologyNanjing 210093China

The effective Lagrangian of a finite volume system should, in principle, depend on the system size. In the framework of the Nambu-Jona-Lasinio(NJL) model, by considering the influence of quark feedback on the effective coupling, we obtain a modified NJL model so that its Lagrangian depends on the volume. Based on the modified NJL model, we study the influence of finite volume on the chiral phase transition at finite temperature, and find that the pseudo-critical temperature of crossover is much lower than that obtained in the normal NJL model. This clearly shows that the volume dependent effective Lagrangian plays an important role in the chiral phase transitions at finite temperature.

关键词： chiral phase transition NJL model finite volume effect

EXISTENCE OF POSITIVE PERIODIC SOLUTION OF A DISCRETE TIME MUTUALISM SYSTEM WITH DELAYS

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Annals of Differential Equations 2006年第2期22卷 225-233页

作者： Zhang Huiying xia yonghui College of Math. and Computer Science Fuzhou University Fuzhou 350002

Discrete-time analogue of mutualism model is introduced. The discrete-time analogues is considered to be numerical discretization of the continuous-time models and we study their dynamical characteristics. It is shown... 详细信息

关键词： discrete-time analogues periodic solutions coincidence degree mutualism model

EXISTENCE OF POSITIVE PERIODIC SOLUTION OF MUTUALISM SYSTEM WITH INFINITE DELAYS

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Annals of Differential Equations 2005年第3期21卷 448-453页

作者： xia yonghui Lin Muren College of Math. and Computer Science Fuzhou University Fuzhou 350002

In this paper, by using Mawhin coincidence degree, some sufficient conditions are obtained for the global existence of positive periodic solution of a mutualism system with infinite delays. Our results generalize thos... 详细信息

关键词： periodic solutions coincidence degree mutualism model

PERSISTENCE AND STABILITY OF A DISCRETE PERIODIC PREDATOR-PREY MODEL

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Annals of Differential Equations 2007年第4期23卷 530-535页

作者： Xu Rongcong xia yonghui College of Math. and Computer Science Fuzhou University Fuzhou 350002

In this paper, we investigate the persistence and global asymptotic stability of a discrete predator-prey system. Based on Lyapunov functions, several criteria are established concerning the persistence and globally a... 详细信息

关键词： persistence difference equation Lotka-Volterra systems asymptotical stability

Robust,self-adhesive,and low-contact impedance polyvinyl alcohol/polyacrylamide dual-network hydrogel semidry electrode for biopotential signal acquisition

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SmartMat 2024年第2期5卷 67-82页

作者： Guangli Li Ying Liu Yuwei Chen yonghui xia xiaoman Qi Xuan Wan Yuan Jin Jun Liu Quanguo He Kanghua Li Jianxin Tang Hunan Key Laboratory of Biomedical Nanomaterials and Devices College of Life Sciences and ChemistryHunan University of TechnologyZhuzhouChina Department of Neurology Zhuzhou People's HospitalZhuzhouChina Zhuzhou Institute for Food and Drug Control ZhuzhouChina

Herein,we fabricated a flexible semidry electrode with excellent mechanical performance,satisfactory self-adhesiveness,and low-contact impedance using physical/chemical crosslinked polyvinyl alcohol/polyacrylamide dual-network hydrogels(PVA/PAM DNHs)as an efficient saline *** resultant PVA/PAM DNHs showed admirable adhesive and compliance to the hairy scalp,facilitating the establishment of a robust electrode/skin interface for biopotential signal ***,the PVA/PAM DNHs steadily released trace saline onto the scalp to achieve the minimized potential drift(1.47±0.39 mV/min)and low electrode–scalp impedance(18.2±8.9 kΩ@10 Hz).More importantly,the application feasibility of real-world brain−computer interfaces(BCIs)was preliminarily validated by 10 participants using two classic BCI *** mean temporal cross-correlation coefficients between the semidry and wet electrodes in the eyes open/closed and the N200 speller paradigms are 0.919±0.054 and 0.912±0.050,*** electrodes demonstrate anticipated neuroelectrophysiological responses with similar *** semidry electrode could also effectively capture robust P-QRS-T peaks during electrocardiogram *** their outstanding advantages of fast setup,user-friendliness,and robust signals,the proposed PVA/PAM DNH-based electrode is a promising alternative to wet electrodes in biopotential signal acquisition.

关键词： brain-computer interface dual-network hydrogel electrocardiogram signals electroencephalography signals semidry electrode

Deteriorated proteinuria in SRNS patient with ADCK4 compound heterozygous mutations after co-enzyme Q10 administration

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Deteriorated proteinuria in SRNS patient with ADCK4 compound...

具有无界非线性项的广义逐段常变量微分方程拓扑等价函数的正则性

第十三届江浙沪儿科学术会议暨2016年浙江省医学会儿科学学术年会

作者： Wang Jingjing Mao Jianhua Fu Haidong Shen Huijun xia yonghui Liu Aiming Department of Nephrology The Children Hospital of Zhejiang University School of Medicine

Backgrounds:Steroid resistant nephrotic syndrome is important clinical features for *** to literatures,approximately 30%children with SRNS may carry a disease-causing genetic ***:A 9year girl administered to our depar...

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中国科学：数学 2020年第6期50卷 847-872页

作者：邹长武夏永辉 Manuel Pinto 福州大学数学与计算机科学学院福州350116 浙江师范大学数学与计算机科学学院金华321004 Departamento de Matematica Universidad de ChileCasilla 653Chile

关于微分方程的拓扑等价以及拓扑等价函数的正则性一直是微分方程研究的焦点之一.当非线性项有界时,已经有很多学者证明了微分方程的拓扑等价函数是H?lder正则的.然而,当非线性项无界时,拓扑等价的正则性尚无突破性结果.在无界情形下, ... 详细信息

关于微分方程的拓扑等价以及拓扑等价函数的正则性一直是微分方程研究的焦点之一.当非线性项有界时,已经有很多学者证明了微分方程的拓扑等价函数是H?lder正则的.然而,当非线性项无界时,拓扑等价的正则性尚无突破性结果.在无界情形下, Zou和Shi(2017)得到了拓扑线性化的条件.除Zou和Shi(2017)给出的条件外,在附加的一个前提下,本文证明拓扑等价函数的H?lder正则性.事实上,当系统是有界时,系统线性化的条件足以保证其H?lder正则性.但是,当系统是无界时,这个附加条件是必不可少的.本文举例说明这个事实.这是首篇考虑无界系统拓扑等价H?lder正则的文章.

关键词：微分方程逐段常变量微分方程正则性