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THE TYPE ii DEFECT iN 18R MARTENSiTE iN A Cu-Zn-Al AllOY

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Acta Metallurgica Sinica(English letters) 1998年第1期11卷 29-32页

作者： J.X.Zhang Y.F.Zheng W.cai l.C.Zhao Harbin inst of Technology Harbin China

Type H defect in 18R martensite in a Cu-Zn-Al alloy has been studied by high resolution electron microscopy. it was found that Type H defect is not fault internal to martensite plate; rather,it is a stack of plates A and C. The rare observation of Type H defect is considered to be due to the fact that thc slice is too thin to exist for self-accommodation.

关键词： shape memory alloy Cu-based alloy defect

Characteristics improvement of l-Band Superfluorescent Fiber Source Using Unpumped Erbium-Doped Fiber

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Chinese Physics letters 2012年第8期29卷 131-134页

作者： WANG Xiu-lin HUANG Wen-cai cai Zhi-Ping Department of Physics Jimei UniversityXiamen 361021 Department of Electronic Engineering Xiamen UniversityXiamen 361005

An effective method for the improvement of the characteristics of an erbium-doped l-band superfluorescent fiber source(SFS)is demonstrated using an unpumped erbium-doped fiber(EDF).With a suitable length of unpumped EDF section in the single-forward pumped configuration,broadening of the l-band spectral linewidth is achieved and the variation of mean wavelength versus pump power is eliminated.A mean wavelength stable l-band SFS with a spectral linewidth of 50.2 nm and an output power of 60.2 mW is obtained *** method of using unpumped EDF enables one to offer a stable and wideband l-band SFS with high flexibility and to overcome the shortcomings of the synchronous pumping technique.

关键词： pumped technique fiber

An implicit Degree Condition for Relative length of long Paths and Cycles in Graphs

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Acta Mathematicae Applicatae Sinica 2016年第2期32卷 365-372页

作者： Jun-qing cai Hao li School of Management Qufu Normal University l.R.i UMR 8623 CNRS and Universit'e Paris-Sud 11 institute for interdisciplinary Research Jianghan University

For a graph G, we denote by p（G） and c（G） the number of vertices of a longest path and a longest cycle in G, respectively. For a vertex v in G, id（v） denotes the implicit degree of v. in this paper, we obtain that if G is a 2-connected graph on n vertices such that the implicit degree sum of any three independent vertices is at least n ＋ 1, then either G contains a hamiltonian path, or c（G）〉 p（G） - 1.

关键词： Hamiltonian path dominating cycles implicit degree longest paths longest cycles

Effect of rol.ing ratios on the microstructural evolution and corrosion performance of an as-rolled Mg-8wt.%li alloy

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Journal of Magnesium and Alloys 2021年第2期9卷 560-568页

作者： B.J.Wang D.K.Xu X.cai Y.X.Qiao l.Y.Sheng School of Environmental and Chemical Engineering Shenyang Ligong UniversityShenyang110159China Key laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiangChina Peking University Shenzhen InstituteShenzhen Key Lab Human Tissue Regenerate&RepairShenzhen 518057China

in this work,the influence of rol.ing ratios on microstructural changes and corrosion behavior of an as-rolled Mg-8 wt.%li alloy in0.1 mol/l Na Cl solution has been *** revealed that with the rol.ing ratio being increased from 3 to 10,theα-Mg phases were elongated and fragmented,whilst the area fraction of exposedβ-li phases ***,the corrosion performance of the alloy decreased with the increased rol.ing *** all the samples,their corrosion processes were quite similar and can have two *** the initial stage with the samples being immersed for less than 6 h,the corrosion mainly occurred inβ-li *** the samples were immersed for longer than 6 h,the corrosion attack transferred toα-Mg phases and the hydrogen evolution rate was accelerated.

关键词： Mg-li alloys Wrought Microstructure Corrosion performance

Effects of westward shoaling pycnocline on characteristics and energetics of internal solitary wave in the luzon Strait by numerical simulations

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Acta Oceanologica Sinica 2021年第5期40卷 20-29页

作者： Haibin l.i Yujun liu Xiaokang Chen Guozhen Zha Shuqun cai Jiangsu Key laboratory of Marine Bioresources and Environment/Jiangsu Key laboratory of Marine Biotechnology Jiangsu Ocean UniversityLianyungang 222005China State Key laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong laboratory(Guangzhou) Guangzhou 511458China Jiangsu institute of Marine Resources Development Lianyungang 222005China University of Chinese Academy of Sciences Beijing 100049China innovation Academy of South China Sea Ecology and Environmental Engineering Chinese Academy of SciencesGuangzhou 510301China

An internal gravity wave model was employed to simulate the generation of internal solitary waves(iSWs)over a sill by tidal flows.A westward shoaling pycnocline parameterization scheme derived from a three-parameter model was adopted,and then 14 numerical experiments were designed to investigate the influence of the pycnocline thickness,density difference across the pycnocline,westward shoaling isopycnal slope angle and pycnocline depth on the *** the pycnocline thickness on both sides of the sill.increases,the total barotropic kinetic energy,total baroclinic energy and ratio of baroclinic kinetic energy(KE)to available potential energy(APE)decrease,whilst the depth of isopycnal undergoing maximum displacement and ratio of baroclinic energy to barotropic energy *** the density difference on both sides of the sill decreases synchronously,the total barotropic kinetic energy,ratio of baroclinic energy to barotropic energy and total baroclinic energy decrease,whilst the depth of isopycnal undergoing maximum displacement *** the westward shoaling isopycnal slope angle increases,the total baroclinic energy increases whilst the depth of turning point almost remains *** the depth of westward shoaling pycnocline on both sides of the sill reduces,the ratio of baroclinic energy to barotropic energy and total baroclinic energy decrease,whilst the total barotropic kinetic energy and ratio of KE to APE *** one of the above four different influencing factors was increased by 10%while the other factors keep unchanged,the amplitude of the leading soliton in iSW Packet A was decreased by 2.80%,7.47%,3.21%and 6.42%*** density difference across the pycnocline and the pycnocline depth are the two most important factors in affecting the characteristics and energetics of iSWs.

关键词： internal solitary waves baroclinic energy South China Sea pycnocline

Fano-Resonant Hybrid Metamaterial for Enhanced Nonlinear Tunability and Hysteresis Behavior

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Research 2021年第1期2021卷 597-605页

作者： Yuancheng Fan Xuan He Fuli Zhang Weiqi cai Chang li Quanhong Fu Natal.ia V.Sydorchuk Sergey l.Prosvirnin Key laboratory of light Field Manipulation and information Acquisition Ministry of Industry and Information Technology and School of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710129China Research&Development institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057China institute of Radio Astronomy National Academy of Sciences of UkraineKharkiv 61002Ukraine Karazin Kharkiv National University Kharkiv 61077Ukraine

Artificial resonant metamaterial with subwavelength localized filed is promising for advanced nonlinear photonic *** this article,we demonstrate enhanced nonlinear frequency-agile response and hysteresis tunability in a Fano-resonant hybrid metamaterial.A ceramic cuboid is electromagnetically coupled with metal cut-wire structure to excite the high-Q Fano-resonant mode in the dielectric/metal hybrid *** is found that the significant nonlinear response of the ceramic cuboid can be employed for realization of tunable metamaterials by exciting its magnetic mode,and the trapped mode with an asymmetric Fano-like resonance is beneficial to achieve notable nonlinear modulation on the scattering *** nonlinear tunability of both the ceramic structure and the ceramic/metal hybrid metamaterial.is promising to extend the operation band of metamaterials,providing possibility in practical applications with enhanced light-matter interactions.

关键词： spectrum resonant nonlinear

iron–doped bismuth oxybromides as visible-light-responsive Fenton catalysts for the degradation of atrazine in aqueous phases

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Journal of Environmental Sciences 2024年第3期137卷 321-332页

作者： Yong-li cai Yu-Hang Xu Ji-Zun Xiang Zhi-Qiang Zhang Qiu-Xiang He Ya-Feng li Jian lü Fujian Provincial Key laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China State Key laboratory of Photocatalysis on Energy and Environment Fuzhou UniversityFuzhou 350116China

Pesticides and its degradation products,being well–known residues in soil,have recently been detected in many water bodies as pollutants of emerging concerns,and thus there is a contemporary demand to develop viable and cost–effective techniques for the removal of related organic pollutants in aqueous ***,a visible-light-responsive Fenton system was constructed with iron–doped bismuth oxybromides(Fe–BiOBr)as the *** the advantage of sustainable Fe(Ⅲ)/Fe(Ⅱ)conversion and optimized H_(2)O_(2)utilization,the optimal Fe–BiOBr–2 catalyst showed an excellent atrazine removal efficiency of 97.61%in 120 min,which is superior than the traditional homogeneous Fenton and the majority of heterogeneous processes documented in the *** this photo–Fenton system,hydroxyl(·OH)and superoxide(·O_(2)^(-))radicals were dominant active species contributed to the oxidative degradation of *** to the production of various active radicals,five degradation pathways were proposed based on the identification of intermediates and degradation ***,this work not only demonstrates a fundamental.insight into creating highly efficient and atom economic photo-Fenton systems,but also provides a complementary strategy for the treatment of organic pollutants in water.

关键词： Bismuth oxybromide Photo–Fenton Atrazine Catalytic degradation

Qili Qiangxin, a compound herbal medicine formula, alleviates hypoxia-reoxygenation-induced apoptotic and autophagic cell death via suppression of ROS/AMPK/mTOR pathway in vitro

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Journal of integrative Medicine 2022年第4期20卷 365-375页

作者： cai-lian Fan Wan-jun cai Meng-nan Ye Miao Chen Yi Dai Department of Cardiology the First Affiliated Hospital of Jinan UniversityJinan UniversityGuangzhou 510632Guangdong ProvinceChina College of Pharmacy Jinan UniversityGuangzhou 510632Guangdong ProvinceChina

Objective: Qili Qiangxin(QlQX), a compound herbal medicine formula, is used effectively to treat congestive heart failure in China. However, the molecular mechanisms of the cardioprotective effect are still unclear. This study explores the cardioprotective effect and mechanism of QlQX using the hypoxiareoxygenation(H/R)-induced myocardial.injury ***: The main chemical constituents of QlQX were analyzed using high-performance liquid chromatography-evaporative light-scattering detection. The model of H/R-induced myocardial.injury in H9c2 cells was developed to simulate myocardial.ischemia–reperfusion injury. Apoptosis, autophagy,and generation of reactive oxygen species(ROS) were measured to assess the protective effect of QlQX. Proteins related to autophagy, apoptosis and signal.ing pathways were detected using Western ***: Apoptosis, autophagy and the excessive production of ROS induced by H/R were significantly reduced after treating the H9c2 cells with QlQX. QlQX treatment at concentrations of 50 and 250 μg/ml caused significant reduction in the levels of lC3Ⅱ and p62 degradation(P lso suppressed the AMPK/mTOR signal.ing pathway. Furthermore, the AMPK inhibitor Compound C(at 0.5 μmol/l),and QlQX(250 μg/ml) significantly inhibited H/R-induced autophagy and apoptosis(P ile AiCAR(an AMPK activator, at 0.5 mmol/l) increased cardiomyocyte apoptosis and autophagy and abolished the anti-apoptotic effect of QlQX. Similar phenomena were also observed on the expressions of apoptotic and autophagic proteins, demonstrating that QlQX reduced the apoptosis and autophagy in the H/R-induced injury model via inhibiting the AMPK/mTOR pathway. Moreover, ROS scavenger,N-Acetyl-l-cysteine(NAC, at 2.5 mmol/l), significantly reduced H/R-triggered cell apoptosis and autophagy(P ile, NAC treatment down-regulated the ratio of phosphorylation of AMPK/AMPK(P ich showed a similar effect to ***: QlQX plays a

关键词： Herbal medicine Qili Qiangxin formula Hypoxia–reoxygenation Reactive oxygen species Autophagy Apoptosis AMPK/mTOR pathway

An implicit Degree Ore-condition for Pancyclicity of Graphs

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Acta Mathematica Sinica,English Series 2013年第9期29卷 1773-1780页

作者： Hao li Jun Qing cai l.R.i UMR 8623 CNRS and Universit Paris-Sud 11 F-91405 Orsay France institute for interdisciplinary Research Jianghan University School of Management Qufu Normal University

in 1989, Zhu, li and Deng introduced the definition of implicit degree of a vertex v in a graph G, denoted by id（v）. in this paper, we prove that if G is a 2-connected graph of order n such that id（u）＋ id（v） ≥ n for each pair of nonadjacent vertices u and v in G, then G is pancyclic unless G is bipartite, or else n = 4r, r ≥ 2 and G is isomorphic to F4r .

关键词： implicit degree Hamilton cycle pancyclic graph