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Chinese Journal of Polymer Science 2021年第9期39卷 1177-1184页

作者： Wei Lv Chun Wang Xing-Chi lin Xiao-Fei mei Wen Wang E Yang Qi-Dan ling zheng-Huan lin College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Fujian Provincial Key Laboratory of Polymer Materials Fujian Normal UniversityFuzhou 350007China

Solid-stated smart polymers responsive to external stimuli have attracted much attention for potential application in the field of photoelectron devices,logic gates,sensor,data storage and ***,it is a bigger challenge for polymers than that for small molecules in solid state to acquire stimuli-responsive properties,because polymers with high molecular weight are not as easy to change the packing structure as small molecules under external ***,a D-A type alternating copolymer PTMF-o containing 3,4-bisthienylmaleimide(A unit)and fluorene(D unit)is designed and *** irradiation of sunlight,PTMF-o film exhibits a photo-response with the color altering from purple to *** is attributed to the structure of copolymer transformed from ring-opening form(PTMF-o)to ring-closure form(PTMF-c),resulting from the oxidative photocyclization of 3,4-bisthienylmaleimide ***,the ability of charge transfer(CT)from fluorene to 3,4-bisthienylmaleimide unit in PTMF-o can be easily weakened by light ***-o film displays a WORM-type resistive storage performance for the strong ***,after exposure,the electrical memory behavior in situ transfers into FLASH type,due to weak CT in ***-o film can also be employed as smart material to construct NAND and NOR logic gates by using light as input *** work provides a simple way to modify the electronic properties of polymers and realize stimuli-response in solid states.

关键词： Dithienylmaleimide Photo-response Electrical memory Logic gate

Error-heralded generation and self-assisted complete analysis of two-photon hyperentangled Bell states through single-sided quantum-dot-cavity systems

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Science China(Physics,Mechanics & Astronomy) 2019年第7期62卷 46-54页

作者： YanYan zheng LeiXia Liang mei Zhang Department of Physics Applied Optics Beijing Area Major Laboratory Beijing Normal University

Hyperentangled-Bell-state analysis(HBSA) is critical for high-capacity quantum communication. Based on a recent proposal by Wang et al. [Opt. Express 24, 28444(2016)], we design two independent schemes for error-heralded deterministic generation and self-assisted complete HBSA of two-photon systems entangled in both polarization and spatial-mode degrees of freedom(DOFs).Unlike previous programs, we firstly propose an error-heralded block with a singly charged quantum dot inside a single-sided optical microcavity, with which errors due to imperfect interactions between photons and quantum dot systems can be *** error-heralded block, ensures that the fidelity of the two schemes for hyperentangled-Bell-state generation and complete HBSA reaches unity. Moreover, hyperentanglement makes it possible to analyze the polarization state with the assistance of the measured spatial-mode state. The self-assisted mechanism of HBSA greatly simplifies the analytical process and significantly relaxes the requirements of nonlinearities. Therefore, these schemes promise to be implemented more easily in experiments,taking a step closer to long-distance high-capacity quantum communication.

关键词： quantum hyperentanglement error-heralded self-assisted high-capacity quantum communication

Resonant Raman Scattering in GaAs_(1-x)P_(x):N

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Chinese Physics Letters 1996年第1期13卷 54-57页

作者： YU Rong-wen zheng Jian-sheng XIAO mei-jie lin Zhi-rong YAN Bing-zhang Department of Physics Xiamen UniversityXiamen 361005

We report a study of the resonant Raman scattering(RRS)by optical phonons that is induced by excitons bound to isoelectronic nitrogen impurities in GaAs_(1-x)P_(x):N *** resonant excitation into N_(x) band,strong Raman lines involving allowed LO and "forbidden" TO for badkscattering coniiguration from(100)surface are *** is interpreted as the breakdown of normal selection rule in the RRS *** following the temperature dependence of the N_(x)luminescence and its phonon sidebands,we also separate RRS from sharp line due to luminescence.

关键词： process. resonant allowed

Mean square stability for Markov jump Boolean networks

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Science China(Information Sciences) 2020年第1期63卷 190-199页

作者： Liqing WANG mei FANG zheng-Guang WU State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and ControlZhejiang University College of Automation Harbin Engineering University

In this paper, one of the stability definitions of Markov jump Boolean networks(MJBNs), called mean square stability(MSS), is investigated. Some necessary and sufficient conditions are presented to guarantee the MSS of such MJBNs. Moreover, one of the necessary and sufficient conditions for MSS is obtained in terms of linear programming, which implies that MSS is equivalent to global stability with probability 1 for MJBNs. Furthermore, the construction of Lyapunov function is given and also another theorem based on the Lyapunov function is derived to ensure the MSS of MJBNs. Finally, a numerical example is provided to illustrate the profits of our results.

关键词： mean square stability MSS Boolean network BN stochastic stability Markovian jump parameters semi-tensor product STP Lyapunov function

桉树林下套种对牧草糙毛假地豆的生长和林地土壤养分的影响

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广东农业科学 2017年第12期44卷 45-52页

作者：林正眉侯琼昭罗刚跃董川宏麦荣臻陈树耿广东省植物发育生物工程重点实验室/华南师范大学生命科学学院广东广州510631 中国科学院华南植物园广东广州510650 江门市四堡林场广东鹤山529700

为探讨桉树——糙毛假地豆套种模式的可行性,选取广东江门四堡林场不同林龄桉树林,套种糙毛假地豆(Desmodium heterocarpon *** Meeuwen),检测其株高、冠幅等动态变化;分析不同种植方式对其生长及土壤养分的影响。结果表明:对照苗圃地... 详细信息

为探讨桉树——糙毛假地豆套种模式的可行性,选取广东江门四堡林场不同林龄桉树林,套种糙毛假地豆(Desmodium heterocarpon *** Meeuwen),检测其株高、冠幅等动态变化;分析不同种植方式对其生长及土壤养分的影响。结果表明:对照苗圃地种植的糙毛假地豆冠幅显著大于桉树林下的植株,说明荫蔽环境对糙毛假地豆生长有一定抑制作用。不同林龄桉树林下的糙毛假地豆全年都可生长,且其株高、分支、冠幅均无显著差异;种子播种和实生苗种植两种套种方式对糙毛假地豆的株高、冠幅无显著影响;糙毛假地豆在适当的种植间距下可有效抑制杂草;桉树林下套种糙毛假地豆可有效改善土壤养分含量。结合其生长特性进行管理,桉树林下套种的糙毛假地豆生长趋势正常,且能改善土壤条件。

关键词：桉树林下林草套种糙毛假地豆生长情况土壤养分

Formation of Ti-N graded bioceramic layer by DC hollow-cathode plasma nitriding

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中国有色金属学会会刊：英文版 2004年第Z1期14卷 319-322页

作者： zheng Chuan-lin Department of Mechanical Engineering Beijing Jiaotong University Beijing 100044 China

Ti-N graded ceramic layer was formed on titanium by using DC hollow-cathode plasma nitriding technique. The structure of Ti-N layer was analyzed using X-ray diffractometry(XRD) with Cu Kα radiation, and the microhardness( HV0.1) was measured from the surface to inner along the cross section of Ti-N layer. The results indicate that the Ti-N graded layer is composed of ε-Ti2 N, δ-TiN and α-Ti(N) phases. Mechanism discussion shows that hollow-cathode discharge can intensify gas ionization, increase current density and enhance the nitriding potential, which directly increases the thickness of the diffusion coatings compared with traditional nitriding methods.

关键词： Ti-N graded ceramic layer hollow-cathode plasma nitriding

An Analytical Model Based on the Theory of Constant Heat Flux Ratio Across the Frozen Layer for Solving Planar, Cylindrical and Spherical Freezing Problems

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Journal of Thermal Science 2004年第2期13卷 155-162页

作者： Sui lin zheng Jiang Department of Mechanical and Industrial Engineering Concordia University Montreal Canada Flomerics Inc. Southborough USA

The purpose of the paper is to establish a theory of the constant heat flux ratio across the frozen layer based on the dimensional analysis of the system equations describing the freezing processes. An analytical model is then developed, utilizing this theory, for solving the planar, cylindrical and spherical freezing problems with both inward and outward freezing. As there is no exact solution available for the cylindrical and spherical freezing processes, the temperature distribution in the planar solidification obtained from the model is compared with the exact solution. They are in excellent agreement. For the cylindrical and spherical freezing, the complete inward solidification times calculated by the model are compared with those obtained from references. The results are in good agreement. The great advantage of the proposed model is its simplicity and is sufficiently accurate for most practical

关键词： analytical planar cylindrical spherical solidification theory constant heat flux ratio.

Magnetic correction to the anomalous magnetic moment of electrons

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Communications in Theoretical Physics 2022年第5期74卷 75-85页

作者： Fan lin mei Huang School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

We investigate the leading order correction of anomalous magnetic moment(AMM) to electrons in a weak magnetic field and find that the magnetic correction is negative and magnetic field dependent, indicating a magnetic catalysis effect for the electron gas. In the laboratory, to measure the g-2, the magnitude of the magnetic field B is several T, and correspondingly the magnetic correction to the AMM of electron/muon is around 10^(-34)/10^(-42), therefore the magnetic correction can be safely neglected in the current measurement. However, when the magnitude of the magnetic field strength is comparable with the electron mass, the magnetic correction of the electron’s AMM will become considerable. This general magnetic correction to the charged fermion’s AMM can be extended to study quantum chromodynamic matter under a strong magnetic field.

关键词： anomalous magnetic moment magnetic correction magnetic field

Effect of Fructus Psoraleae on motility of gallbladder isolated smooth muscle strips from guinea pigs

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World Journal of Gastroenterology 2006年第32期12卷 5214-5218页

作者： Shan Jin mei Li mei-ling lin Yong-Hui Ding Song-Yi Qu Wei Li Tian-Zhen zheng Department of Physiology School Of Basic Medical ~clences Lanzhou University Lanzhou 730000 Gansu ProvinceChina Gansu Food and Drug Administration Lanzhou 730000 Gansu Province China

AIM： To observe the effect of Fructus Psoraleae on motility of isolated gallbladder muscle strips of guinea pigs and its mechanism. METHODS： Guinea pigs were hit to lose consciousness and the whole gallbladder was removed quickly. Two or three smooth muscle strips （8 mm×3mm） were cut along a longitudinal direction. The mucosa was gently removed. Every longitudinal muscle strip was suspended in a tissue chamber which was continuously perfused with 5 mL Krebs solution （37℃）, pH 7.4, and aerated with 950 mL/L 02 and 50 mL/L CO2. The isometric response was recorded with an ink-writing recorder. After 2 h equilibration under i g-load, 50 μL Fructus Psoraleae （10, 20, 70, 200, 700, 1000 g/L） was added cumulatively into the tissue chamber in turn every 2 rain to observe their effects on gallbladder muscle strips （cumulating final concentration of Fructus Psoraleae was 0.1, 0.3, 1.0, 3.0, 10.0, 20.0 g/L）. The antagonists, including 4-DAMP, benzhydramine, hexamethonium, phentolamine, verapamil and idomethine were given 2 min before Fructus Psoraleae respectively to investigate the mechanisms involved. RESULTS： Fructus Psoraleae dose-dependently increased the resting tension （r=0.992, P〈0.001）, decreased the mean contractile amplitude （r=0.970, P〈0.001） and meanwhile increased the contractile frequency of the gallbladder muscle strip in vitro （r=0.965, P〈0.001）. The exciting action of Fructus Psoraleae on the resting tension could be partially blocked by 4-DAMP （the resting tension decreased from 1.37 ± 0.41 to 0.70 ± 0.35, P〈0.001）, benzhydramine （from 1.37 ±0.41 to 0.45±0.38, P〈0.001）, hexamethonium （from 1.37 ± 0.41 to 0.94 ± 0.23, P〈0.05）, phentolamine （ from 1.37±0.41 to 0.89±0.22, P〈0.01） and verapamil （from 1.37±0.41 to 0.94±0.26, P〈0.05）. But the above antagonists had no significant effect on the action of Fructus Psoraleae-induced mean contractile amplitude （P〉0.05）. Moreover, the increase of the contractile frequency due to Fructus Psoraleae was inhibited by 4-DAMP

关键词： Fructus Psoraleae Gallbladder smooth muscle strips M3, N, α, H1 receptors Ca^2+ channel Prostaglandin

Endpoint Estimates for Marcinkiewicz Integrals on Weighted Weak Hardy Spaces

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Acta Mathematica Sinica,English Series 2015年第3期31卷 430-444页

作者： Yan lin mei XU School of Sciences China University of Mining and Technology

In this paper, we obtain the（W Hω^1, W Lω^1） type estimate for the Marcinkiewicz integral and the（W H1 b,ω, W L1ω） type estimate for the commutator generated by a BMO function and the Marcinkiewicz integral, w... 详细信息

关键词： μΩ boundedness kernel inequality logarithmic satisfying endpoint maximal Lebesgue proof