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Imaging theory of nonlinear second harmonic and third harmonic generations in confocal microscopy

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Science china(Physics,Mechanics & Astronomy) 2004年第1期47卷 8-16页

作者： TANG Zhilie1, XING Da2.& LIU Songhao2.1. department of Physics, South china {2. university, Guangzhou 510631, china 2. School for Information and Optoelectronic Science and Engineering, South china {2. university, Guangzhou 510631, china Correspondence should be addressed to Tang Zhilie (email: tangzhl@***) Received April 2., 2.03 1. department of Physics South China Normal University 510631 Guangzhou China 2. School for Information and Optoelectronic Science and Engineering South China Normal University 510631 Guangzhou China

The imaging theory of nonlinear second harmonic generation (SHG) and third harmonic generation (THG) in confocal microscopy is presented in this paper. The nonlinear effect of SHG and THG on the imaging properties of confocal microscopy has been analyzed in detail by the imaging theory. It is proved that the imaging process of SHG and THG in confocal microscopy, which is different from conventional coherent imaging or incoherent imaging, can be divided into two different processes of coherent imaging. The three-dimensional point spread functions (3D-PSF) of SHG and THG confocal microscopy are derived based on the nonlinear principles of SHG and THG. The imaging properties of SHG and THG confocal microscopy are discussed in detail according to its 3D-PSF. It is shown that the resolution of SHG and THG confocal microscopy is higher than that of single- and two-photon confocal microscopy.

关键词： second harmonic generation, third harmonic generation, confocal microscopy, three-dimensional point spread function.

A family of transitive modular Lie superalgebras with depth one

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Science china Mathematics 2007年第10期50卷 1451-1466页

作者： Wen-de LIU~(1+) Yong-zheng ZHANG~2.~1 department of Mathematics,Harbin normal {2.,Harbin 150080,china ~2.department of Mathematics,Northeast normal {2.,Changchun 13002.,china 1. department of Mathematics Harbin Normal University Harbin 150080 China 2. department of Mathematics Northeast Normal University Changchun 130024 China

The embedding theorem is established for Z-graded transitive modular Lie superalgebras g■■■(g-1)satisfying the conditions: (i)g0■■(g-1) and g0-module g-1 is isomorphic to the natural■(g-1)-module; (ii)dim g1=2.3n(2.^2.1),where n=1/2.im g-1. In particular,it is proved that the finite-dimensional simple modular Lie superalgebras satisfying the conditions above are isomorphic to the odd Hamiltonian *** restricted Lie superalgebras are also considered.

关键词： flag, divided power algebra, modular Lie superalgebra, embedding theorem

Non-universal Gauge Bosons Z'and the Process e~+e~- →f

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Communications in Theoretical Physics 2004年第3期41卷 419-424页

作者： YUE Chong-Xing~1 WANG Shun-Zhi~2.1 department of Physics,Liaoning normal {2.,Dalian 11602.,china 2.College of Physics and Information Engineering,Henan normal {2.,Xinxiang 453002.china department of Physics Liaoning Normal University Dalian 116029 College of Physics and Information Engineering Henan Normal University Xinxiang 453002

Introduetion Altl、ough the standard model(SM)that bases on thega、lge gro、ip SU:(2.xU(1)has been sueeessful in de-seribing the Physies of eleetroweak interaetions,the meeh-anisn,of the eleetroweak symmetry breaking(... 详细信息

关键词： non-universal gauge bosons cross section TC2.models

Preparation of PFSA/PSf hollow fiber composite membranes with recovered PFSA for the pervaporation separation of EtOH/H_2.

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Science china chemistry 2010年第1期53卷 273-280页

作者： LANG WanZhong1,2.TONG Wei2.XU ZhenLiang2.& GUO YaJun1 1department of chemistry,Shanghai {2. university,Shanghai 2.02.4,china 2.hemical Engineering Research Center,East china university of Science and Technology,Shanghai 2.02.7,china 1. department of chemistry Shanghai Normal University Shanghai 200234 China2. Chemical Engineering Research Center East China University of Science and Technology Shanghai 200237 China

Perfluorosulfonic acid/Polysulfone(PFSA/PSf) hollow fiber composite membranes have been prepared by dip-coating method using PSf ultrafiltration(UF) membrane as substrate with recovered *** composite membranes were applied to the pervaporation separation of 95% ethanol(EtOH)/H2. *** images show that the thickness of the PFSA skin layer of the composite membranes is about 2.μm,much thinner than those of other PFSA composite membranes revealed in the *** of annealing temperature,coating solution concentration and counter-ions of PFSA on the pervaporation performances of the composite membranes were *** total flux decreases and separation factor increases with the increase of annealing *** highest permeation flux of 32.0 g m-2.h-1 and a separation factor of 5.4 is obtained for the composite membrane annealed at 80°*** lowest permeation flux of 396 g m-2.h-1 and a separation factor of 2..7 is obtained for the composite membrane annealed at 160°*** permeation performances of the PFSA/PSf composite membrane are evidently influenced by the counter-ions of *** flux sequence of the PFSA/PSf composite membranes with different counter-ions is H+>Li+>Ca2.>Mg2.>Na+>K+>Ba2.>Fe3+>Al3+,and the separation factor sequence is H+2.2.2.Na+>K+.There are very little variations of △Eapp values between the composite membranes with three divalent counterions(Mg2.,Ca2. and Ba2.),and the △Eapp values of the composite membranes with two trivalent counterions(Fe3+ and Al3+) are relatively high.

关键词： pervaporation hollow fiber composite membrane perfluorslulfonic acid(PFSA) ethanol(EtOH)/H2. mixture

Constraints on Cardassian universe from Gamma ray bursts

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Science china(Physics,Mechanics & Astronomy) 2010年第9期53卷 1720-1725页

作者： WANG TaiShan1 & LIANG Nan2.1 department of Physics & Center for Astrophysics,Tsinghua university,Beijing 100084,{2. 2.department of Astronomy,Beijing normal university,Beijing 100875,{2. 1. department of Physics & Center for Astrophysics Tsinghua University Beijing 100084 China2. Department of Astronomy Beijing Normal University Beijing 100875 China

Constraints on the original Cardassian model and the modified polytropic Cardassian model are examined from the recently derived 42.gamma-ray bursts(GRBs) data calibrated with the method that can avoid the circularity *** results show that GRBs can be an optional observation to constrain the Cardassian *** the GRBs data with the newly de-rived size of baryonic acoustic oscillation peak from the Sloan Digital Sky Survey(SDSS),and the position of the first acoustic peak of the Cosmic Microwave Background radiation(CMB) from Wilkinson Microwave Anisotropy Probe(WMAP),we find Ωm0=0.2.+0.02.0.02.n=0.06+0.07-0.08(1σ) for the original Cardassian model,and Ωm0=0.2.+0.2.-0.02.n=-0.09+0.2.-1.91,β=0.82.2.10-0.62.1σ) for the modified polytropic Cardassian model.

关键词： Cardassian Gamma ray burst Cosmic Microwave Background baryonic acoustic oscillation

膜厚影响SnO_2.膜型气敏元件敏感特性的研究

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无机材料学报 2001年第6期16卷 1255-1258页

作者：傅军董名友海南师范学院物理系海口571158 海南海口科宇电子设备厂海口571100

采用丝网印刷技术制备不同膜厚ＳｎＯ２厚膜气敏试样，在不同温度下进行热处理后测定了试样的阻温曲线和对乙醇气体的灵敏度，结果表明制备不同膜厚试样的气体灵敏度不同，阻温曲线也不同．要制备灵敏度高、一致性好的气敏器件，调整控... 详细信息

采用丝网印刷技术制备不同膜厚ＳｎＯ２厚膜气敏试样，在不同温度下进行热处理后测定了试样的阻温曲线和对乙醇气体的灵敏度，结果表明制备不同膜厚试样的气体灵敏度不同，阻温曲线也不同．要制备灵敏度高、一致性好的气敏器件，调整控制膜厚和及其热处理温度至关重要．

关键词： SnO2.敏元件膜厚热处理气敏特征二氧化锡厚膜型气敏元件气敏材料

Schwarz-Pick estimates for positive real part holomorphic functions on unit ball and polydisc

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Science china Mathematics 2010年第4期53卷 1017-1024页

作者： LIU Yang 1,& CHEN ZhiHua 2.1 department of Mathematics,Zhejiang normal {2.,Jinhua 32.004,china 2.department of Mathematics,Tongji {2.,Shanghai 2.0092.china 1. department of Mathematics Zhejiang Normal University Jinhua 321004 China2. Department of Mathematics Tongji University Shanghai 200092 China

We give higher order derivatives Schwarz-Pick estimates for all positive real part holomorphic functions on Bn and D n,and generalize early work on Schwarz-Pick estimate of higher order derivatives for holomorphic fun... 详细信息

关键词： Schwarz-Pick estimate holomorphic function Taylor expansion

Synthesis, catalytic and biological activity of novel dinuclear copper complex with Schiff base

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Science china chemistry 2006年第3期49卷 225-229页

作者： WEI Danyi1,2. LI Ning1, LU Gui1 & YAO Kemin1 1. department of chemistry, Zhejiang {2., Hangzhou 31002., china 2. Institute of Inorganic chemistry, Ningbo {2., Ningbo 3152.1, china 1. department of chemistry Zhejiang University Hangzhou 310027 China 2. Institute of Inorganic chemistry Ningbo University Ningbo 315211 China

A novel dinuclear copper complex with tetraglycol aldehyde-phenylalanineSchiff base has been synthesized. It was characterized and formulated as [Cu_2.(NO_3)]NO_3 byelemental analysis, magnetic susceptibility, TG-DTA, IR, EPR and ~1H NMR spectra. The obtainedcomplex can be used as a good catalyst for the polymerization of methyl methacrylate (MMA). Theoptimum polymerization conditions are: MMA/catalyst = 500 (molar ratio); [catalyst] =7.5x10^(-3)mol·L^(-1); dioxane as solvent; 80℃; 6 h. Polymethyl methacrylate (PMMA) with 80%conversion, 7.2.10^5 viscosity-average molecular weight and 60.5% syndiotacticity was obtained. Thiscomplex has also been shown to play an important role in scavenging O_2.-.

关键词： novel copper complex, Schiff base, catalytic activity, scavenging effect of O-·2.

γ-Hydroxy-α,β-acetylenic esters:asymmetric syntheses and applications

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Science china chemistry 2010年第1期53卷 21-35页

作者： GAO Ge1 & PU Lin2.1department of chemistry,Sichuan {2.,Chengdu 610064,china 2.0} of chemistry,{2. of Virginia,Charlottesville,Virginia 2.904-4319,USA 1. department of chemistry Sichuan University Chengdu 610064 China2. Department of Chemistry University of Virginia Charlottesville Virginia 22904-4319 USA

γ-Hydroxy-α,β-acetylenic esters are versatile synthetic precursors to many organic *** paper reviews the synthesis of chiral γ-hydroxy-α,β-acetylenic esters by asymmetric reduction of γ-oxo-α,β-acetylenic esters,enantioselective addition to aldehydes in the presence of chiral catalysts,and diastereoselective addition to chiral *** preparation of racemic γ-hydroxy-α,β-acetylenic esters is also *** are provided for the application of γ-hydroxy-α,β-acetylenic esters in organic synthesis.

关键词： γ-hydroxy-α β-acetylenic ester asymmetric enantioselective diastereoselective