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Nano Research 2023年第7期16卷 10476-10482页

作者： Xiaohan Li Aijun Liu Zhaoyu Wang Youchao Wei qun lin Yameng Chen Yongsheng Liu Maochun Hong College of Chemistry Fuzhou UniversityFuzhou 350116China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China

Self-trapped excitons(STEs)emission from halide perovskites with strong exciton-phonon coupling has attracted considerable attention due to the widespread application in optoelectronic ***,the in-depth understanding of the relationship between exciton-phonon coupling and luminescence intensity remains ***,a doping-enhanced exciton-phonon coupling effect is observed in Cs_(3)Cu_(2)I_(5)nanocrystals(NCs),which leads to a remarkable increasement of their STEs emission *** study shows that the hetero-valent substitution of Cu+with alkaline-earth metal ions(AE^(2+))causes a greater degree of Jahn-Teller distortion between the ground state and excited state structures of[Cu_(2)I_(5)]_(3)-clusters as evidenced by our spectral analysis and first-principles *** a consequence,an X-ray detector based on these Cs_(3)Cu_(2)I_(5):AE NCs delivers an X-ray imaging resolution of up to 10 lp·mm^(-1) and a low detection limit of 0.37μGyair·s^(-1),disclosing the potential of doping-enhanced exciton-phonon coupling effect in improving STEs-emission and practical application for X-ray imaging.

关键词： Cs_(3)Cu_(2)I_(5) nanocrystals self-trapped exciton exciton-phonon coupling X-ray image

Study on the Binding Effect between Cordycepin and Calf Thymus DNA by Circular Dichroism

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Chinese Chemical Letters 2006年第10期17卷 1351-1352页

作者： Jian Ya linG Jian qun lin Guo Ying ZHANG Chang Kai ZHANG State Key Laboratory of Microbial Technology Shandong University Jinan 250100 Traditional Chinese Medicine of Shandong University Jinan 250014 School of Environmental Science and Engineering Shandong University Jinan 250100

Binding of cordycepin to the double helical DNA with a high affinity was investigated by CD spectra in this paper. The results proved that uncoiling, unbinding and denaturation of DNA proceeded continuously upon the i... 详细信息

关键词： Cordycepin DNA-binding CT-DNA conformation spectroscopic technique.

Vehicle Detection and Tracking Based on Fast Wavelet Transform and Kalman Filter

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微计算机信息 2008年第33期 278-280+268页

作者： lin Pei-qun XU Jian-min

A new approach for vehicle detection is proposed in this ***,fast wavelet transform(FWT)designed for discrete signal is proposed to extract image texture,while grey level co-occurrence matrix(GLCM)is employed to measure and analyze the extracted ***,vehicles can be extracted since the vehicle sections and the shadow sections have different textures in the combined foreground ***,we put forward in this work the state and observation matrixes of Kalman filter which has been employed to track vehicles under complicated traffic *** results in real traffic scenes reveal that the proposed techniques are effective and efficient for vehicle detection and tracking.

关键词： Intelligent transportation systems Vehicle detection Vehicle tracking Fast wavelet transform Kalman filter

SUBSONIC AND TRANSONIC FLOW FIELD IN TWO-DIMENSIONAL DE LAVAL NOZZLES

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Acta Mechanica Sinica 1985年第1期1卷 1-8页

作者： Pu qun lin Tongji (lin,T.C.) (Institute of Mechanics,Academia Sinica) 1. Institute of Mechanics Academia Sinica China

This paper presents solutions of subsonic and transonic flow fields in two-dimensionalDe Laval nozzles with preassinged contraction ratio n1,expansion ratio n2and throat wall radius *** effects of the contraction and the expansion angle on nozzle flow,the transformation of flowpattern of a De Laval nozzle in the throat region,and the conditions of occurrence and the governingparameters of the supersonic bubbles are discussed.

关键词： compressible nozzle flow hodograph method incompressible nozzle flow De Laval nozzle nozzle flow transonic nozzle flow

Spectral resource defragmentation based on PCE in flexible bandwidth optical networks

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The Journal of China Universities of Posts and Telecommunications 2012年第6期19卷 105-112页

作者： lin qun ZHAO Yong-li CAO Xu-ping YU Xiao-song TANG Ting-ting ZHANG Jie State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications

The granularity of the flexible bandwidth optical network is the spectral slots, which is much smaller than that of the wavelength switch optical network. For the dynamic clients＇ connections setup and tear down processes, it will give rise to fragmentation of spectral resources. It is the decline in the probability of finding sufficient contiguous spectrum for new connections that result in the fragmentation of spectral resource. To be more specific, these spectra may be unavailable and waste. In this case, the severe waste of the spectrum will lead to low efficiency in spectral utilization and will not adapt to large capacity requirements of transmission in the future. Because path computation element （PCE） framework has the characteristics of the central disposal and deployment of the spectrum resource, we construct the spectral resource allocation scenario based on PCE framework in the flexible bandwidth optical network to use spectrum resource effectively Based on the principle of the generation of the fragmentation, we put forward a spectrum resource defragmentation algorithm to consolidate the available spectrum for clients＇ connections. The simulation results indicate that this algorithm is able to reduce fragmentation of network, improve the continuity of spectral resource, reduce the blocking rate of services in the network and improve the spectral efficiency significantly.

关键词： flexible bandwidth optical network PCE framework spectral fragmentation spectral resource defragmentation

ASYMPTOTIC ERROR EXPANSION AND DEFECT CORRECTION FOR SOBOLEV AND VISCOELASTICITY TYPE EQUATIONS

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Journal of Computational Mathematics 1998年第1期16卷 51-62页

作者： qun lin Shu-hua Zhang Ning-ning Yan(Institute of Systems Science, Chinese Academy of Sciences, Beijing, China) 中科院系统科学所北京

In this paper we study the higher accuracy methods - the extrapolation and defect correction for the semidiscrete Galerkin approximations to the solutions of Sobolev and viscoelasticity type equations. The global extrapolation and the correction approximations of third order, rather than the pointwise extrapolation results are presented.

关键词： asymptotic error semidiscrete Galerkin approximation global extrapolation higher accuracy

FINITE ELEMENT APPROXIMATION USING A GRADED MESH ON DOMAINS WITH REENTRANT CORNERS

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Systems Science and Mathematical Sciences 1992年第2期5卷 127-140页

作者： CHEN Hongsen lin qun Institut für Angewandte Mathematik Universitat HeidelbergGemany Institute of Systems Science Academia SinicaBeijing 100080China

Finite element approximation of the elliptic operator on a non-convexdomain composed of rectangles is considered using a graded *** errorestimates and error expansion are presented.

关键词： Elliptic problem reentrant corner finite element method graded mesh extrapolation method

Study on the Inheritance Value of the Red Culture in South Jiangxi from the Perspective of Revitalizing Soviet Area

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International Journal of Technology Management 2013年第6期 17-19页

作者： qun lin School of Science and Technology Gannan Normal University

In this paper, through an analysis on the contents and present development of the red culture in South Jiangxi, the strategy of developing red culture tourism is proposed for promoting the economic development and enh... 详细信息

关键词： The Revitalization of Soviet Area Red Culture the Culture of South Jiangxi

SUPERCONVERGENCES OF THE ADINI'S ELEMENT FORSECOND ORDER EQUATION

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Journal of Computational Mathematics 1999年第6期17卷 569-574页

作者： Ping Luo(Department of Computer Science and Technology, Qinghua University, Beijing 100084,China)qun lin(Institute of Systems Science, Academia Sinica, Beijing, 100080, China) Tsing Hua Univ Dept Comp Sci & Technol Beijing 100084 Peoples R China Acad Sinica Inst Syst Sci Beijing 100080 Peoples R China

n this papers the asymptotic error expansions of Adini's element for the secondorder imhomogeneous Neumann problem are given and the superconvergence estimations are obtained. Moreover, a numerical example to support ... 详细信息

关键词： Adini's element Superconvergence estimation Asymptotic expansion.

Effect of light-emitting diodes with different color rendering indexes on the ocular tissues of rat

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International Journal of Ophthalmology(English edition) 2022年第7期15卷 1035-1043页

作者： Wen-Yi Chen Kun-Hong Xiao Rong lin Ze-Ren Qiu Ya-Min Chen Ze-qun lin Xiu-Bin Ke Yan Huang Department of Ophthalmology and Optometry Fujian Medical UniversityFuzhou 350004Fujian ProvinceChina The Third Clinical Medical College Fujian Medical UniversityFuzhou 350004Fujian ProvinceChina The Research Center for Juvenile Myopia Prevention and Control of Fujian Province Fujian Medical UniversityFuzhou 350004Fujian ProvinceChina

AIM:To compare the damage of light-emitting diodes(LEDs)with different color rendering indexes(CRIs)to the ocular surface and retina of ***:Totally 20 Sprague-Dawley(SD)rats were randomly divided into four groups:the first group was normal control group without any intervention,other three groups were exposed by LEDs with low(LED-L),medium(LED-M),and high(LED-H)CRI respectively for 12 h a day,continuously for 4 *** changes in tear secretion(Schirmer I test,SIt),tear film break-up time(BUT),and corneal fluorescein sodium staining(CFS)scores were compared at different times(1 d before experiment,2 and 4 wk after the experiment).The histopathological changes of rat lacrimal gland and retina were observed at 4 wk,and the expressions of tumor necrosis factor-α(TNF-α)and interleukin-6(IL-6)in lacrimal gland were detected by immunofluorescence ***:With the increase of light exposed time,the CFS value of each light exposed group continued to increase,and the BUT and SIt scores continued to decrease,which were different from the control group,and the differences between the light exposed groups were statistically ***-eosin(HE)results showed that the lacrimal glands of each exposed group were seen varying degrees of acinar atrophy,vacuoledistribution,increasing of eosinophil granules,etc.;the retina showed obvious reduction of photoreceptor cell layer and changes in retinal thickness;LED-L group has the most significant change in all *** suggested that the positive expressions of TNF-αand IL-6 in the lacrimal glands of each exposed group were higher than those of the control ***:LED exposure for 4 wk can cause the pathological changes of lacrimal gland and retina of rats,and increase the expression of TNF-αand IL-6 in lacrimal gland,the degree of damage is negatively correlated with the CRI.

关键词： light emitting diodes lacrimal gland retina dry eye color rendering indexes spectrum