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Crisis of Transient Chaos

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Chinese Physics Letters 2002年第7期19卷 901-903页

作者： Wang Wen-Xiu Lu Yun-Qing chen he-sheng Ma Ming-Quan Zhu You-Zhang he Da-Ren Department of Physics and Complexity Science Center Yangzhou University Yangzhou 225002 Xi'an Research Institute of Advanced Science and Technology Xi'an 710025

A new kind of crisis, which is marked by a sudden change of a strange repeller, is observed in an electronic relaxation oscillator. Firstly, by its simplified piecewise linear model, we show analytically that a strange repeller appears after a hole-induced crisis, and that the fractal dimension of the strange repeller and the average lifetime of the iterations in the region occupied by the original attractor suddenly change at the critical parameter value when the repeller disappears. Our numerical investigation convinces us that the corresponding phenomenon can be found in the original electronic relaxation oscillator.

关键词： Fractal dimension

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周期驱动的一维台球模型的量子扩散特性

物理学报 2000年第5期49卷 844-848页

作者：陈贺胜中国科学技术大学天文与应用物理系合肥230026

经典的一维台球模型 (1D KBM )是一个不连续的哈密顿系统 ,一种由不连续所导致的新型随机网结构存在于1D KBM的相空间中 ,曾对其经典的扩散特性作过深入的探讨 .就 1D KBM的量子扩散特性作了进一步的讨论 ,通过与经典扩散特性的对比 ,... 详细信息

经典的一维台球模型 (1D KBM )是一个不连续的哈密顿系统 ,一种由不连续所导致的新型随机网结构存在于1D KBM的相空间中 ,曾对其经典的扩散特性作过深入的探讨 .就 1D KBM的量子扩散特性作了进一步的讨论 ,通过与经典扩散特性的对比 ,发现了经典扩散特性与量子扩散特性之间存在着一定的联系 ,而更多的量子系统所特有的特性也被揭示出来 ,特别是参数α分别处于区间 [0 ,π/ 2 )和 [-π/ 2 ,0 )

关键词：周期驱动一维台球模型量子扩散特性

Single W Boson Production at s=189 GeV

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Chinese Physics Letters 2000年第4期17卷 258-260页

作者： YANG Hai-Jun chen Guo-Ming YANG Min XIONG Zhao-Hua LU Liang LU Yu-sheng chen he-sheng TANG Xiao-Wei Martin Pohl JIN Bing-Nian Institute of High Energy Physics Chinese Academy of SciencesBeijing 100039 Swiss Federal Institute of Technology ZurichSwitzerland

Single W boson production is analyzed in a data sample collected by L3 detector at Large Electron Positron Collider in *** integrated luminosity is 176.4pb^(-1)with center-of-mass energy at√s=*** signal consists of large missing energy final states with a single energetic lepton or two hadronic *** total cross section of single W production is measured to be 0.58±0.13±0.04 pb,in good agreement with standard model *** this measurement,the limits on the anomalousγWW triple-gauge-boson couplings are derived at 95%confidence level:-0.48<△_(kr)<0.38 and-0.50<λ_(γ)<0.41.

关键词： boson gauge coupling

Extraction of the Structure Functions in τ→3πv Decay Using Li Model

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Chinese Physics Letters 1998年第12期15卷 868-870页

作者： XIONG Zhao-hua chen Guo-ming chen he-sheng Institute of High Energy Physics Chinese Academy of SciencesBeijing 100039

The structure functions in theτ→3πv decay are extracted using the model proposed by *** predictions of Li model are compared with KS ones and the data from OPAL *** is found that predictions by the model forωA(Q2)are consistent with the data except for in the high energy region(Q2>1.2 GeV2),andωC,ωD,ωE normalized toωA are in reasonable agreement with the experimental *** factors to the Breit-Wigner distribution of a1 and the Lagrangian of this decay are proposed to the model.

关键词： experiment. decay model.

带有2+1味道Wilson费米子的格点量子色动力学在有限温度、有限密度下的相变

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物理学报 2009年第10期58卷 6791-6797页

作者：陈贺胜扬州大学物理科学与技术学院扬州225009

利用格点规范理论研究了带有2+1味道费米子的量子色动力学在有限密度及温度下的相变问题,研究了去禁闭相变与化学势和裸质量参数之间的依赖关系,并利用有限体积效应分析以及MonteCarlo模拟的演化序列所反映出的特点对相变的类型做了确认... 详细信息

利用格点规范理论研究了带有2+1味道费米子的量子色动力学在有限密度及温度下的相变问题,研究了去禁闭相变与化学势和裸质量参数之间的依赖关系,并利用有限体积效应分析以及MonteCarlo模拟的演化序列所反映出的特点对相变的类型做了确认,给出了相结构图.

关键词：格点量子色动力学相变

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太湖湖盆取土的环境影响和管理

水资源保护 2007年第4期23卷 62-64,76页

作者：陈荷生太湖流域水资源保护局上海200434

根据太湖湖盆取土区的自然地理和水环境,论述了湖盆取土对湖体生态将造成较大冲击,强调湖盆取土论证和环境影响评价,取土后的生态修复和补偿措施是取土湖区生态环境保护的关键。最后给出生态维护技术原则和建议。

关键词：湖盆取土生态保护环境影响太湖

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太湖宜兴近岸水域“湖泛”现象初析

水利水电科技进展 2011年第4期31卷 33-37页

作者：陈荷生水利部太湖流域水资源保护局上海200434

针对太湖西北部宜兴近岸带2008年5月26日至6月9日出现"黑水团"、水体浑浊黑臭的问题,分析其产生的原因,采用实时调查监测等手段,获取水文气象与水动力和湖体水生态环境等资料信息。分析结果表明,"黑水团"是水体中水-土界面耗氧性有机物... 详细信息

针对太湖西北部宜兴近岸带2008年5月26日至6月9日出现"黑水团"、水体浑浊黑臭的问题,分析其产生的原因,采用实时调查监测等手段,获取水文气象与水动力和湖体水生态环境等资料信息。分析结果表明,"黑水团"是水体中水-土界面耗氧性有机物在厌氧环境背景、微生物及细菌作用下发生强烈生化反应后呈现的生态灾变现象,称为"湖泛"。其物质源以重污染底泥、沉积于水—土界面的藻类等生物质、高浓度富含营养盐的悬浮物为主。最后提出控源减污、生态清淤、加快新孟河调水工程建设以及加强动态监测和"湖泛"发生机理研究等建议。

关键词：太湖水域黑水团重污染沉积物湖泛

Transforming growth factor-beta 1 enhances discharge activity of cortical neurons

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Neural Regeneration Research 2025年第2期20卷 548-556页

作者： Zhihui Ren Tian Li Xueer Liu Zelin Zhang Xiaoxuan chen Weiqiang chen Kangsheng Li Jiangtao sheng Department of Microbiology and Immunology Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular ImmunopathologyShantou University Medical CollegeShantouGuangdong ProvinceChina Department of Neurosurgery First Affiliated Hospital of Shantou University Medical CollegeShantouGuangdong ProvinceChina

Transforming growth factor-beta 1(TGF-β1)has been extensively studied for its pleiotropic effects on central nervous system *** neuroprotective or neurotoxic effects of TGF-β1 in specific brain areas may depend on the pathological process and cell types ***-gated sodium channels(VGSCs)are essential ion channels for the generation of action potentials in neurons,and are involved in various neuroexcitation-related ***,the effects of TGF-β1 on the functional properties of VGSCs and firing properties in cortical neurons remain *** this study,we investigated the effects of TGF-β1 on VGSC function and firing properties in primary cortical neurons from *** found that TGF-β1 increased VGSC current density in a dose-and time-dependent manner,which was attributable to the upregulation of Nav1.3 *** VGSC current density and Nav1.3 expression were significantly abolished by preincubation with inhibitors of mitogen-activated protein kinase kinase(PD98059),p38 mitogen-activated protein kinase(SB203580),and Jun NH2-terminal kinase 1/2 inhibitor(SP600125).Interestingly,TGF-β1 significantly increased the firing threshold of action potentials but did not change their firing rate in cortical *** findings suggest that TGF-β1 can increase Nav1.3 expression through activation of the ERK1/2-JNK-MAPK pathway,which leads to a decrease in the firing threshold of action potentials in cortical neurons under pathological ***,this contributes to the occurrence and progression of neuroexcitatory-related diseases of the central nervous system.

关键词： central nervous system cortical neurons ERK firing properties JNK Nav1.3 p38 transforming growth factor-beta 1 traumatic brain injury voltage-gated sodium currents

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冷轧薄板连续电镀铬机组

电镀与精饰 2011年第4期33卷 22-25页

作者：陈声鹤王文宝山钢铁股份有限公司冷轧薄板厂上海201299

为满足市场和冷轧薄板厂自身发展需求,进一步增加产品规模、扩大品种范围,在食品包装行业采用镀铬板代替镀锡板。为便于镀铬板的生产,设计、组建、投产了连续镀铬机组。该机组经三年时间的生产实践,其产能已达到设计水平,产品质量满足... 详细信息

为满足市场和冷轧薄板厂自身发展需求,进一步增加产品规模、扩大品种范围,在食品包装行业采用镀铬板代替镀锡板。为便于镀铬板的生产,设计、组建、投产了连续镀铬机组。该机组经三年时间的生产实践,其产能已达到设计水平,产品质量满足了用户要求。对该机组作简要的介绍,以供同行参考。

关键词：冷轧薄板电镀铬机组