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分子离子光谱强度与母体分子气体压强的关系

物理学报 2004年第2期53卷 418-422页

作者：龚天林杨晓华李红兵韩良恺陈扬骎华东师范大学物理系光谱学与波谱学教育部重点实验室上海200062 南通师范学院物理系南通226007

实验研究并理论分析了速度调制光谱技术中分子离子谱线的强度与母体分子气体压强的关系 ,提出并实现了一种新的等离子体电场、电子温度、电离系数的诊断方法 .

关键词：速度调制等离子体诊断速度调制光谱技术分子离子光谱强度分子气体压强电子温度电离系数光谱测量

超长波GaAs/AlGaAs量子阱红外探测器光电流谱特性研究

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物理学报 2003年第2期52卷 503-507页

作者：袁先漳陆卫李宁陈效双沈学础资剑温州师范学院物理与电子信息科学系温州325027 中国科学院上海技术物理研究所红外物理国家实验室上海200083 复旦大学应用表面物理国家重点实验室上海200433

研究了响应波长在 15 μm附近的超长波GaAs AlGaAs量子阱红外探测器在不同外加偏压下的光电流谱特性 .光电流谱上的两个主要由于阱宽随机涨落而呈现为高斯线形的响应峰被分别指认为量子阱基态E0 到第一激发态E1 和第三激发态E3的跃迁 .... 详细信息

研究了响应波长在 15 μm附近的超长波GaAs AlGaAs量子阱红外探测器在不同外加偏压下的光电流谱特性 .光电流谱上的两个主要由于阱宽随机涨落而呈现为高斯线形的响应峰被分别指认为量子阱基态E0 到第一激发态E1 和第三激发态E3的跃迁 .跃迁峰随着器件上外加偏压的增大而出现线性红移现象 ,认为这种变化起源于激发态与基态对量子阱结构中势变化敏感性的不同 ,采用传输矩阵方法并考虑到电子交互作用修正进行的理论计算在定量上解释了实验结果 .

关键词： GaAs/AlGaAs 光电流谱特性量子阱红外探测器超长波传输矩阵砷化镓砷镓铝三元化合物

Experimental investigation of time-dependent cavitation in an oscillatory squeeze film

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Science China(physics,Mechanics & Astronomy) 2004年第z1期47卷 107-112页

作者： chen Xiaoyang, SUN Meili, WANG Wen, D. C. SUN, ZHANG Zhiming & WANG XiaojingResearch Institute of Bearings, shanghai university, shanghai 200072, China department of Mechanical Engineering, State university of New York at Binghamton, NY 13902-6000, USA 1. Research Institute of Bearings Shanghai University 200072 Shanghai China 2. department of Mechanical Engineering State University of New York at Binghamton 13902-6000 NY USA

The occurrence of time-dependent cavitation and tensile stress in an oscillatory oil squeeze film were investigated experimentally. The test apparatus was a simple thrust bearing consisting of two parallel circular plates separated by a thin viscous oil film. During the test, one plate was at rest while tne other (transparent) oscillated in a direction normal to its surface. This test configuration was chosen to avoid the rotational motion and complicated geometry of a squeeze film Journal bearing. The frequency of oscillation was in the range of 5 to 50 Hz and was controlled by an electro-magnetic exciter. The process of cavity formation and its subsequent development was recorded by a high-speed video camera. Concomitant pressure in the oil film was measured both within and without the cavitation region. It was found that both tensile stress and cavities existed in a squeeze film under certain working conditions.

关键词： dynamically loaded journal bearing, squeeze film effect, time-dependent cavitation.

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一些数学物理问题中的Hamilton方程

应用数学和力学 2003年第1期24卷 19-24页

作者：陈勇郑宇张鸿庆大连理工大学数学系大连116023 华东师范大学数学系上海200062

讨论了新的一系列在数学物理方程中微分方程的Hamilton正则表示 ,其中包括变系数 2阶对称方程的Hamilton系统 ,关于常系数的 4阶对称方程新的非齐次Hamilton表示 ,MKdV方程以及KP方程的正则表示·

关键词：数学物理问题 Hamilton方程无穷维Hamilton系统 Hamilton正则方程 Hamilton算子 MKdV方程 KP方程

Screen and identify the critical proteins of central nervous system hemangioblastoma tumor cells using on-line capillary 2D-HPLC combined with LTQ-Orbitrap ESI MS

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Screen and identify the critical proteins of central nervous...

A JET MODEL (Ⅱ)—QCD THEORY

中国神经科学学会第四次会员代表大会暨第七届全国学术会议

作者： Rong XIE~1,Jian-Hong zhu~1,Hang LIU~2,Hui-Zhi FAN~2,Jun YAO~2,Xing WU~1,Lu-Ping chen~1,Yi-Wen SHEN~1,Peng-Yuan YANG~2 1 department of Neurosurgery,Huashan Hospital,Fudan university,shanghai 200040,China 2 department of Chemistry, Fudan university,shanghai 200032,China

＜正＞Objective We carried out a pilot study in which we analyzed the proteomes of central nervous system heman-gioblastoma （CNS HB） tumor cells by using on-line capillary 2D-HPLC combined with LTQ-Orbitrap ESI MS so as to screen and identify the critical proteins related to CNS HB occurring and investigate the histological origin and pathogenesis of the *** CNS HB cells were cultured and identified by enzyme digestion from CNS HB tissues collected during *** human nerve cells were obtained as *** proteins of cells were extracted and enzymolysed. Then LC packing Ultimate 2D-HPLC system（Amsterdam,Netherlands） combined with LTQ-Orbitrap hybrid mass spectrometer （Finnigan,USA） were used to segregate and idenify the proteins of CNS HB tuomor cells and normal human nerve cells. By searching NCBI human reference database,the whole proteins of cells were *** shot gun quantitating technique was used to compare the protein expressional abundance of CNS HB cells with normal human nerve cells so as to screen the critical proteins related to CNS HB *** results were also compared with that in CNS HB tissues proteomics analysis *** 674 and 531 proteins were segregated and identified in this *** the total proteins identified,360 proteins were found exclusively in CNS HB tumor cells while 217 proteins were found only in normal human nerve *** the proteins co-expression both in CNS HB tumor cells and normal never cells,55 proteins had distinguished difference in proteins expressional abundance,including 30 up-regulated and 25 down-regulated proteins. According to their functional role,the identified proteins could be divided into several groups including transport,protein metabolism and folding,glycolysis and stem cell proteins,*** critical proteins related with CNS HB occurring such as 14-3-3,vimentin,carbonic anhydrase were *** results were similar to that in CNS HB tissues proteomics analysi

关键词： 2D-HPLC LTQ-Orbitrap CNS HB pathogenesis

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Chinese Science Bulletin 1983年第6期28卷 752-756页

作者：朱伟沈建国 department of physics Normal University of East China Shanghai shanghai Institute of Nuclear Research Academia Sinica

In a previous paper, we proposed a jet model: single partons form a parton cluster, and then recombine in hadrons. We also gave the distribution functions of this parton cluster. The purpose of this paper is to deal f... 详细信息

关键词： quark hadron fragmentation strange onding momentum A JET MODEL QCD THEORY distinguish dealing

n— OSCILLATIONS IN THE MIT BAG MODEL

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A Monthly Journal of Science 1984年第1期 42-44页

作者：朱伟沙以高 department of physics East China normal university shanghai

The nonconservation of baryon number (B) is a remarkable result of GUT. The process studied extensively is the one with △B=1(△(B-L)=0, L is the lepton number), which causes the decay of proton. Recently, the process... 详细信息

关键词： OSCILLATIONS IN THE MIT BAG MODEL MIT

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Science China(physics,Mechanics & Astronomy) 2024年

作者： Xiaolei Hao Junping Wang Zhaohan Zhang Jiarui Qin zheng Shu Chan Li Jingyu Zhang Weidong Li Feng He Jing chen Institute of Theoretical physics and department of physics State Key Laboratory of Quantum Optics and Quantum Optics DevicesCollaborative Innovation Center of Extreme Optics Shanxi University State Key Laboratory of Precision Spectroscopy East China Normal University Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal University Key Laboratory for Laser Plasmas (Ministry of Education) and School of physics and Astronomy Collaborative Innovation Center for IFSAShanghai Jiao Tong University Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology and College of Engineering PhysicsShenzhen Technology University CAS Center for Excellence in Ultra-intense Laser Science Hefei National Laboratory Department of Modern Physics University of Scienceand Technology of China

Comprehension of photon-triggered molecular processes is essential in the study of various important topics in physics, chemistry, and biology. Here we propose a correlated tunneling picture to understand the dissociative ionization process of molecules in intense laser fields based on a quantum model developed in the framework of many-body S-matrix theory including nuclear vibrational motion. In this quantum correlation picture, the single ionization of H2and the subsequent electron-ion recollisioninduced dissociation are considered as an entangled correlated process. It enables us to attribute the interference pattern in the joint-energy spectra to combined effects of single-slit diffraction and multi-slit interference of correlated electron-nuclear wave packets in the time domain. Our work opens a new avenue to understanding molecular dissociative ionization processes in external fields.

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A JET MODEL

Chinese Science Bulletin 1982年第7期27卷 715-719页

作者：朱伟张民生沈建国 department of physics East China Normal University Shanghai department of physics Shanghai Teachers College Institute of Nuclear Research Academia Sinica Shanghaihe jet phenomenon has been discussed by many authors. In the usual treatment a set of quark fragmentation functions D_g~h(Z) are defined as a fundamental physical quantity describing the quark jet. It represents the probability of the hadrons of type "h" with momentum fraction Z per dz in quark jet.

The jet phenomenon has been discussed by many authors. In the usual treatment, a set of quark fragmentation functions D_g^h(Z) are defined as a fundamental physical quantity describing the quark jet. It represents the... 详细信息

关键词： quark fragmentation momentum hadron meson usual A JET MODEL introd describing transverse