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Strange Meson Photo-production and Its Associated Radiative Capture on Proton in Low-Energy QCD Lagrangian

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Communications in Theoretical Physics 2006年第3X期46卷 493-500页

作者： zhou li-Juan MA Wei-Xing Collaboration Group of Hadron Physics and Non-perturbative QCD Study Guangxi University of Technology Liuzhou 545006 China Institute of High Energy Physics the Chinese Academy of Sciences P.O. Box 918 Beijing 100049 China

Based on the low energy QCD Lagrangian theory and the crossing symmetry relation, strange meson photoproduction and its associated radiative capture on the proton are investigated in the [SUSF（6） × O（3）]sym . × SUc（3） quark mode/of baryon structure with only one same input parameter, the only strong coupling constant aM. Calculations for the cross sections, p-polarization of γ ＋ P → K^＋＋ A reaction and the branching ratios for K^- radiative capture of K^- ＋ p →　γ ＋ Y with Y = A, ∑^0 are performed. Good agreements to data are obtained and the results show that, compared to traditional phenomenological models, the low energy QCD Lagrangian theory provides a successful, unifled description of the strange meson photo-production and its associated radiative capture.

关键词： low-energy QCD Lagrangian quarks and gluons quark structure of baryon strange meson photoproduction K^- meson radiative capture

Existence of Nontrivial Solutions for p-Laplacian-like Equations

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Acta Mathematicae Applicatae Sinica 2011年第3期27卷 393-406页

作者： zhou-xin li Yao-tian Shen Department of Mathematics South China University of Technology Guangzhou 510640 China

In this paper, we study the p-Laplacian-like equations involving Hardy potential or involving critical exponent and prove the existence of one or infinitely many nontrivial solutions. The results of the equations disc... 详细信息

关键词： p-Laplacian-like equation hardy potential critical exponent

linear Correlations between Peak Frequency of Gyrosynchrotron Spectrum and Photosphere Magnetic Fields

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Chinese Journal of Astronomy and Astrophysics 2007年第4期7卷 487-495页

作者： Ai-Hua zhou Jian-Ping li Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008

The gyrosynchrotron spectra are computed in a nonuniform magnetic field case, taking into account the self- and gyroresonance absorption. It is found that the peak frequency νp of the gyrosynchrotron spectrum systematically increases with the increasing photosphere magnetic field strength B0 and increasing viewing angle θ. It is also found for the first time that there are good positive linear correlations between νp and B0, and between log νp and log θ, with linear correlation coefficient 0.99 between νp and B0 and 0.95 between log νp and log θ. We apply the correlations to analyze two burst events observed with OVSA and find that the evolution tendencies of the photosphere magnetic field strength B0 estimated from the above expression are comparable with the observational results of SOHO/MDI. We also give a comparison of the diagnostic results of coronal magnetic field strength in both uniform and nonuniform source models.

关键词： Sun: flare - sun: radio emission - Sun: magnetic field

The Ergodicity of Stochastic Partial Differential Equations with Levy Jump

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Acta Mathematica Sinica,English Series 2011年第12期27卷 2415-2436页

作者： Guo li zhou Zhen Ting HOU College of Mathematics and Statistics Chongqing University Chongqing 401331 P. R. China School of Mathematics Central South University Changsha 410075 P. R. China

In this article, the authors prove the uniqueness in law of a class of stochastic equations in infinite dimension, then we apply it to establish the existence and uniqueness of invariant measure of the generalized sto... 详细信息

关键词： Stochastic partial differential equation Levy processes

Burst detection in turbulent channel flows based on large eddy simulation databases

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Science China(Physics,Mechanics & Astronomy) 2005年第4期48卷 469-484页

作者： ZHANG Qiang zhou Jifu li Jiachun Institute of Mechanics Chinese Academy of Sciences Beijing 100080 Institute of Mechanics Chinese Academy of Sciences Beijing 100080 Institute of Mechanics Chinese Academy of Sciences Beijing 100080

Reliable turbulent channel flow databases at several Reynolds numbers have been established by large eddy simulation (LES), with two of them validated by comparing with typical direct numerical simulation (DNS) results. Furthermore, the statistics, such as velocity profile, turbulent intensities and shear stress, were obtained as well as the temporal and spatial structure of turbulent bursts. Based on the LES databases available, the conditional sampling methods are used to detect the structures of burst events. A method to deterimine the grouping parameter from the probability distribution function (pdf) curve of the time separation between ejection events is proposed to avoid the errors in detected results. And thus, the dependence of average burst period on thresholds is considerably weakened. Meanwhile, the average burst-to- bed area ratios are detected. It is found that the Reynolds number exhibits little effect on the burst period and burst-to-bed area ratio.

关键词： turbulence, burst period, burst-to-bed area ratio, LES.

Applicability of Parametrized Form of Fully Dressed Quark Propagator

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Communications in Theoretical Physics 2006年第4期45卷 675-680页

作者： zhou li-Juan MA Wei-Xing Collaboration Group of Hadron Physics and Non-perturbative QCD Study Guangxi University of Technology Liuzhou 545006 China College of Physical Science and Engineering Technology Guangxi University Nanning 530004 China Institute of High Energy Physics the Chinese Academy of Sciences Beijing 100049 China

According to extensive study of the Dyson-Schwinger equations for a fully dressed quark propagator in the ＂rainbow＂ approximation with an effective gluon propagator, a parametrized fully dressed confining quark propagator is suggested in this paper. The parametrized quark propagator describes a confined quark propagation in hadron, and is analytic everywhere in complex p^2-plane and has no Lehmann representation. The vector and scalar self-energy functions [1 - Af（p^2）] and [Bf（p^2） - mf], dynamlcally running effective mass of quark Mf（p^2） and the structure of non-local quark vacuum condensates as well as local quark vacuum condensates are predicted by use of the parametrized quark propagator. The results axe compatible with other theoretical calculations,

关键词： quark propagator Dyson-Schwinger equations non-perturbative QCD

Surface modification of apatite-wollastonite glass ceramic by synthetic coupling agent

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Frontiers of Materials Science 2014年第2期8卷 157-164页

作者： Qin LONG Da-li zhou Xiang ZHANG Jia-Bei zhou College of Chemical Engineering Sichuan University Chengdu 610065 China College of Materials Science and Engineering Sichuan University Chengdu 610064 China Gannan Medical University Ganzhou 341000 China

In this study, lysine was introduced into the surface of apatite-wollastonite glass ceramic （AW-GC） to improve its cytocompatibility by two steps reaction procedure. Firstly, lysine connected to N-β-（aminoethyl）-y-aminopropyl trimethoxy silane （A-1120） by covalent binding of amide group. Secondly, the lysine-functionalized A-1120 was deposited on the surface of AW-GC through a silanization reaction involving a covalent attachment. FTIR spectra indicated that lysine had been immobilized onto the surface of AW-GC successfully. Bioactivity of the surface modified AW-GC was investigated by simulated body fluid （SBF）, and the in vitro cytocompatibility was evaluated by coculturing with human osteosarcoma cell MG63. The results showed that the process of hydroxyapatite layer formed on the modified material was similar to AW-GC while the mode of hydroxyapatite deposition was changed. The growth of MG63 cells showed that modifying the AW-GC surface with lysine enhances the cell adhesion and proliferation.

关键词： surface modification apatite-wollastonite glass ceramic (AW-GC) lysine silane coupling agent cytocompaUbility

Dental management of a patient with Moebius syndrome:A case report

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World Journal of Clinical Cases 2021年第24期9卷 7269-7278页

作者： Ben Chen ling-Xia li li-li zhou Department of Oral Medicine The Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310009Zhejiang ProvinceChina Department of Generality Hospital of StomatologyZhejiang Chinese Medical UniversityHangzhou 310000Zhejiang ProvinceChina

BACKGROUND Moebius syndrome(MBS)is a nonprogressive and rare congenital neuromuscular disorder involving the facial nerve and abductor nerve;it mainly manifests as facial paralysis and eye strabismus paralytic *** in the oral cavity are also compromised,characterized by microstomia,micrognathia,tongue malformation,cleft lip,high arched palate or cleft palate,bifid uvula,and dental ***,dentistry plays a fundamental and crucial role in caring for these ***,there is limited available data on MBS treatment,particularly regarding dental *** SUMMARY This case report presents dental treatment of a 21-year-old man with MBS and discusses crucial interactions among oral complications of *** this case,the patient was clinically characterized by congenital neuromuscular disorder,occlusal disorders,and tooth and gum *** is noteworthy that the patient presented early eruption of deciduous teeth 2 mo after birth,which has not been reported in other MBS cases and suggests a potentially new clinical manifestation of this *** is important to note that MBS cannot be cured,and oral manifestations of this syndrome can be managed by a multidisciplinary health care team that helps the patient maintain oral hygiene and dental *** a series of oral treatments,no obvious poor oral hygiene,swollen gums,or abnormal imaging results were observed after 2 years of *** This case addressed the oral clinical manifestations of MBS and difficulties experienced during dental management,and suggested early tooth eruption as a potentially new clinical manifestation of this *** of the loopmediated association among oral complications of this syndrome is essential to perfecting treatments.

关键词： Dental treatment Moebius syndrome Oral complications Oral anomalies Early tooth eruption Case report

Effect of miR-124 Overexpression under Wnt/β-catenin Signaling Pathway on Inflammatory Factor and Epidermal Growth Factor in Rats with Precancerous Gastric Lesions

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Chinese Journal of Biomedical Engineering(English Edition) 2024年第1期33卷 17-26页

作者： zhou li-jiang Zhejiang Chinese Medical University Hangzhou Zhejiang 310000China Shangyu People's Hospital of Shaoxing Shaoxing Zhejiang 312300China

Objective:To investigate the effects of miR-124 overexpression on inflammatory factors and epidermal growth factor in rats with gastric precancerous lesions by modulating the Wnt/β-catenin signaling ***:Eighty SPF-grade Wistar rats were selected as the research *** adaptive feeding,they were divided into 4 groups using a random number table *** control group was fed a regular diet,while the model group,low expression group,and overexpression group of rats were treated with N-methyl-N’-nitro-N-nitrosoguanidine to establish a model of gastric cancer precancerous *** successful modeling,the control group and model group rats were injected intraperitoneally with 0.9%sodium chloride solution,the low-expression group rats were injected intraperitoneally with miR-124-5p inhibitor,and the over-expression group rats were injected intraperitoneally with miR-124-5p *** 8 weeks of continuous injection,the levels of miR-124,Wnt/β-catenin signaling pathway-related proteins,inflammatory factors,and epidermal growth factor were observed and compared among the four groups of ***:The differences in the relative expression of miR-124 among the four groups of rats were statistically significant(P<0.05);the differences in the expression of Wnt protein andβ-catenin protein among the four groups of rats were statistically significant(P<0.05),and the expression of Wnt protein andβ-catenin protein in the overexpression group was significantly higher than that of the control group,and significantly lower than that in the model group and the low-expression group;the levels of IL-1β,IL-6,and TNF-αof rats in the four groups of rats IL-1β,IL-6 and TNF-αlevels were statistically different(P<0.05),and the levels of IL-1β,IL-6 and TNF-αin rats in the overexpression group were higher than those in the model group and significantly lower than those in the model group and the low-expression group(P<0.05);the differences in the levels of EGF,HER1

关键词： precancerous lesions of the stomach Wnt/β-catenin signal pathway miR-124 inflammatory factor epidermal growth factor