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Theory of Dynamics In-Phase Locking and Quasi-Period Synchronization in Two Mutually Coupled Multi-Quantum-Well Lasers

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Communications in Theoretical Physics 2011年第3期55卷 481-488页

作者： YAN sen-lin Department of Physics and Electronic Engineering Nanjing Xiaozhuang University Nanjing 211171 China

Abstract We study dynamics in two mutually coupling multi-quantum-well lasers. We carry out theoretical and numerical analysis of synchronization, anti-synchronization, in-phase locking in the two identical lasers but detuning, in detain. It is proved that the coupling level determines stability of the lasers by analyzing the eigenvalue equation. Critical case of locking is discussed via the phase difference equation. Quasi-period and stable states in the two lasers are investigated via varying the current, detuning and coupling level.

关键词： in-phase locking synchronization multi-quantum-well laser coupling

CCL5/CCR5生物学轴在肿瘤中作用的研究进展

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现代生物医学进展 2017年第19期17卷 3780-3782,3696页

作者：吕晓丹李瑶李航林森森袁胜涛中国药科大学江苏省新药筛选重点实验室江苏南京210009

肿瘤因其易转移、易复发的特性成为一大难以治愈的疾病,已严重威胁到人类的生命健康。肿瘤微环境在肿瘤的生长、迁移、免疫逃逸、血管生成等过程中具有明显的促进作用。肿瘤微环境中细胞分泌的CCL5发挥的作用已受到越来越多的关注,且许... 详细信息

肿瘤因其易转移、易复发的特性成为一大难以治愈的疾病,已严重威胁到人类的生命健康。肿瘤微环境在肿瘤的生长、迁移、免疫逃逸、血管生成等过程中具有明显的促进作用。肿瘤微环境中细胞分泌的CCL5发挥的作用已受到越来越多的关注,且许多研究表明抑制CCL5/CCR5生物学轴可抑制肿瘤迁移、血管生成等,预示着这可能成为一个新的肿瘤治疗策略。本文总结了近年来关于CCL5/CCR5生物学轴的研究,包括CCL5/CCR5生物学轴介导的肿瘤生长迁移、血管生成、免疫逃逸等作用,及CCR5抑制剂在肿瘤治疗中的广阔前景。

关键词：趋化因子5 肿瘤迁移免疫逃逸血管生成 CCL5

Visuospatial Memory Alteration in Alzheimer’s Disease

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Neuroscience Bulletin 2020年第8期36卷 829-830页

作者： sen lin Department of Ophthalmology Daping HospitalArmy Medical Center of the People's Liberation ArmyArmy Medical UniversityChongqing 400042China

Although the treatment and drug discovery for Alzheimer’s disease (AD) are limited and some have failed recently,the search for potential biomarkers and early predictors *** is not only characterized by the decline o... 详细信息

关键词： Alzheimer impairment treatment

Controlling Chaos in a Semiconductor Laser via Weak Optical Positive Feedback and Modulating Amplitude

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Communications in Theoretical Physics 2007年第3期47卷 491-494页

作者： YAN sen-lin Physical Department Nanjing Xiaozhuang College Nanjing 210017 China

Numerical analysis of weak optical positive feedback （OPF） controlling chaos is studied in a semiconductor laser. The physical model of controlling chaos produced via modulating the current of semiconductor laser is presented under the condition of OPF. We find the physical mechanism that the nonlinear gain coefficient and linewidth enhance- ment factor of the laser are affected by OPF so that the dynamical behaviour of the system can be efficiently controlled. Chaos is controlled into a single-periodic state, a dual-periodic state, a tri-periodic state, a quadr-periodic state, a pentaperiodic state, and the laser emitting powers are increased by OPF in simulations. Lastly, another chaos-control method with modulating the amplitude of the feedback light is presented and numerically simulated to control chaotic laser into multi-periodic states.

关键词： chaos control positive feedback period

Reaction Effect of Gravitational Radiation of Rotating Ellipsoid as Central Body upon the Variation of Celestial Orbital Plane

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Chinese Physics Letters 1997年第5期14卷 328-331页

作者： LI lin-sen Department of Physics Northeast Normal UniversityChangchun 130024

The Reaction effect of gravitational radiation emitted from central body with quadrupole moment on the variation of celestial orbital plane was studied in *** derive the formulas for the relation between the variation of the inclination of the orbital plane and contraction of the orbital radius with *** expressions deduced were applied to the estimation for the evolution of the systems of planet-satellite(Jupiter-2 and Neptune-1).

关键词： orbital radius contraction

A Simple Method to Extract Tropical Monsoon Forests Using NDVI Based on MODIS Data:A Case Study in South Asia and Peninsula Southeast Asia

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Chinese Geographical Science 2016年第1期26卷 22-34页

作者： lin sen LIU Ronggao State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Distribution of monsoon forests is important for the research of carbon and water cycles in the tropical regions. In this paper, a simple approach is proposed to map monsoon forests using the Normalized Difference Vegetation lndex （NDVI） derived from the Moderate Resolution Imaging Spectroradiometer （MODIS） data. Owing to the high contrast of greenness between wet season and dry season, the monsoon forest can be easily discriminated from other forests by combining the maximum and minimum annual NDVI. The MODIS-based monsoon forest maps （MODMF） from 2000 to 2009 are derived and evaluated using the ground-truth dataset. The MODMF achieves an average producer accuracy of 80.0% and the Kappa statistic of 0.719. The variability of MODMF among different years is compared with that calculated from MODIS land cover products （MCD 12Q 1）. The results show that the coefficient of variation of total monsoon forest area in MODMF is 7.3%, which is far lower than that in MCD12Q1 with 24.3%. Moreover, the pixels in MODMv which can be identified for 7 to 9 times between 200l and 2009 account for 53.1%, while only 7.9% ofMCD12QI pixels have this frequency. Additionally, the monsoon forest areas estimated in MODMF, Global Land Cover 2000 （GLC2000）, MCDI2Q1 and University of Maryland （UMD） products are compared with the statistical dataset at national level, which reveals that MODMv has the highest R^2 of 0.95 and the lowest RMSE of 14 014 km^2. This algorithm is simple but reliable for mapping the monsoon forests without complex classification techniques.

关键词： monsoon forest Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation Index(NDVI) amplitude threshold classification

巨噬细胞游走抑制因子在肿瘤中的作用研究进展

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现代生物医学进展 2017年第20期17卷 3992-3995页

作者：李瑶高颖生吕晓丹林森森袁胜涛中国药科大学药物科学研究院江苏省新药筛选重点实验室江苏南京210009

巨噬细胞游走抑制因子是一种具有多种生物学效应的糖蛋白,可以调节不同的下游信号如ERK/AKT、NF-κB等通路参与肿瘤细胞增殖、侵袭、转移、血管形成和自噬等生物学过程。临床相关研究表明巨噬细胞游走抑制因子与肿瘤发生发展关系密切,... 详细信息

巨噬细胞游走抑制因子是一种具有多种生物学效应的糖蛋白,可以调节不同的下游信号如ERK/AKT、NF-κB等通路参与肿瘤细胞增殖、侵袭、转移、血管形成和自噬等生物学过程。临床相关研究表明巨噬细胞游走抑制因子与肿瘤发生发展关系密切,且在乳腺癌、肺癌、前列腺癌、甲状腺癌、结肠癌等多种肿瘤中高表达,因此以巨噬细胞游走抑制因子为靶点的相关肿瘤治疗逐渐受到重视。有关巨噬细胞游走抑制因子拓扑异构酶活性抑制剂及巨噬细胞游走抑制因子中和抗体在肿瘤治疗中的研究越来越多。本文对巨噬细胞游走抑制因子在肿瘤发生发展中的作用以及针对巨噬细胞游走抑制因子进行的肿瘤治疗研究作一综述。

关键词：巨噬细胞游走抑制因子肿瘤治疗靶点

Effect of Heat Treatment on Structure and Magnetic Performance of Ni-Fe-P Alloy Obtained by Electroless Plating

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Chemical Research in Chinese Universities 2005年第6期21卷 718-722页

作者： WANG sen-lin ZHANG Yong College of Materials Science and Engineering ChinaCollege of Information Science and Engineering Huaqiao University Quanzhou 362021 P. R.China

The electroless deposition of Ni68-Fe10.5-P21.5 alloy has been investigated. The crystallization behavior of the deposit was comparatively studied by using differential scanning calorimetry and X-ray diffractometry. The deposit transforms into a square Ni3P phase at 380. 0 ℃, then changes into a cubic FeNi3 phase at 490. 0 ℃. The microhardness, the size of the formed grains and the magnetic performance of the deposit increase with the increase of the heat treatment temperature below 500 ℃, then they decrease after this temperature. The effect of heat treatment time at 500 ℃ on the surface micromorphology, the structure and the magnetic performance of the deposit were also studied. The resuits show that with the increase of heat treatment time, the extent of crystallization of the deposit increases and the size of the formed grains becomes uniform. The results also show that the magnetic performance of the deposit under heat treatment for 40 min is maximal and then decreases with the increase of heat treatment time. The property change of the deposit is related to the crystal structure and the size of the formed grains of the deposit.

关键词： Electroless plating Ni-Fe-P alloy Heat treatment Magnetic performance

Decoding the Moon Phase Display Device over the Front Dial of the Antikythera Mechanism

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Chinese Journal of Mechanical Engineering 2015年第4期28卷 676-683页

作者： lin Jian Liang YAN Hong sen Department of Mechanical Engineering and University Museum National Cheng Kung University

The Antikythera mechanism is the most famous ancient astronomical calculator. The damaged excavation is a critical constraint for decoding the mechanism completely. By the systematic reconstruction design methodology, all feasible designs of the moon phase display device, which is one of the unclear mechanisms of the Antikythera mechanism, are reconstructed. These designs, including ordinary gear trains and epicyclic gear trains, are the simplest designs and satisfy the surviving evidence. The Antikythera mechanism and its reconstruction designs presented by lin and YAN are introduced first. Three pointer types of the Antikythera mechanism are concluded based on their display motions and the orientation of the mechanism. In accordance with the analysis of the available interior reconstruction designs and the surviving evidence, four feasible designs of the moon phase display device are generated. All of them utilize the ball pointer with black and white that rotates around the radial axis to show cyclic moon phase. Two of these four feasible reconstruction designs are driven by one input source, and their bronze disks are fixed and rotatable respectively. Both of the remaining reconstruction designs are driven by two input sources, and their bronze disks are rotatable. Therefore, the four reconstruction designs of the moon phase display device reveal all possible display conditions of the moon phase pointers and the possible purposes of the bronze disk.

关键词： Antikythera mechanism moon phase display device reconstruction design gear train