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Exact Calculations of Vertex γb and Zb in the Unitary Gauge

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Communications in Theoretical physics 2007年第9期 502-508页

作者： WU Lu-Sen XIAO Zhen-Jun department of physics and Institute of Theoretical physics,Nanjing normal university,Nanjing 2.0097,china

In this paper,we present the exact calculations for the vertex Tb and Zb in the unitary *** lind that（a） the divergent-and p-dependent terms are left in the effective vertex function Γ;（p,k） for b→s7γ transition even afterwe sum up the contributions from four related Feynman diagrams;（b） for an on-shell photon,such terms do not contributeet al.; （c） for off-shell photon,these terms will be canceled when the contributions from both vertex γb and Zb aretaken into account simultaneously,and therefore the finite and gauge-independent function Z;（x-t）=C;（x;）+D;/4,which governs the semi-leptonic decay b→sl;l;,is derived in the unitary gauge.

关键词： unitary gauge Feynman diagram vertex

A generalized Weyl-Wigner quantization scheme unifying P-Q and Q-P ordering and Weyl ordering of operators

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Chinese physics B 2012年第6期21卷 207-212页

作者：王继锁范洪义孟祥国 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology College of Physics and EngineeringQufu Normal University department of physics Liaocheng University department of physics Shanghai Jiao Tong University

By extending the usual Wigner operator to the s-parameterized one as 1/4π2.integral （dyduexp [iu（q-Q）＋iy（p-P）＋is/2.u]） from n=- ∞ to ∞ with s beng a,real parameter,we propose a generalized Weyl quantization scheme which accompanies a new generalized s-parameterized ordering *** rule recovers P-Q ordering,Q-P ordering,and Weyl ordering of operators in s = 1,1,0 *** it differs from the Cahill-Glaubers’ ordering rule which unifies normal ordering,antinormal ordering,and Weyl *** also show that in this scheme the s-parameter plays the role of correlation between two quadratures Q and *** formula that can rearrange a given operator into its new s-parameterized ordering is presented.

关键词： generalized Wigner operator generalized operator ordering rule bivariate normal dis-tribution

Sonochemical effect of a bifrequency irradiation

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Chinese Science Bulletin 2000年第2期45卷 142-145页

作者： ZHU Changping, FENG Ruo & ZHAO Yiyun department of physics. Jingzhou {2. College, Jingzhou 434100, china State Key Laboratory of Modern Acoustics, Nanjing university, Nanjing 2.0093, china Chemistry department of Yunnan university, Kunming 650091, Ch department of physics Jingzhou Normal College Jingzhou China State Key Laboratory of Modern Acoustics Nanjing University Nanjing China Chemistry department of Yunnan university Kunming China

The sonochemical effect of a bifrequency orthogonal ultrasonic irradiation has been studied by using two different detecting methods. It has been shown that the sonochemical yield produced by the bifrequency irradiation appears to be much more than the sum of the yields produced separately by the two irradiations. The bifrequency irradiation, therefore, can be expected to exert a great influence on the development of sonohemical

关键词： bifrequency sonochemistry effect.

TOTAL CROSSS ECTIONS FOR ELECTRON SCATTERING FROM SIMPLE HYDROCARBON MOLECULES: C2.4,C2.6 AND C3H8

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原子与分子物理学报 1998年第4期 24-28页

作者： Liu Yufang Sun Jinfeng department of physics, Henan {2. university Xinxiang 453002

１ＩＮＴＲＯＤＵＣＴＩＯＮＳｉｍｐｌｅｈｙｄｒｏｃａｒｂｏｎｍｏｌｅｃｕｌｅｓａｓａｎｉｍｐｏｒｔａｎｔｃｏｍｐｏｎｅｎｔｉｎｔｈｅｐｌａｎｅｔａｒｙａｎｄｃｏｍｅｔａｒｙａｔｍｏｓｐｈｅｒｅａｎｄａｓａｄｏｍｉｎａ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＳｉｍｐｌｅｈｙｄｒｏｃａｒｂｏｎｍｏｌｅｃｕｌｅｓａｓａｎｉｍｐｏｒｔａｎｔｃｏｍｐｏｎｅｎｔｉｎｔｈｅｐｌａｎｅｔａｒｙａｎｄｃｏｍｅｔａｒｙａｔｍｏｓｐｈｅｒｅａｎｄａｓａｄｏｍｉｎａｎｔｍａｔｅｒｉａｌｉｎｔｈｅｆｉ...

关键词： Total cross sections Semi-empirical formula Books

Fabrication of hexagonal gallium nitride films on silicon (111) substrates

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Rare Metals 2003年第3期22卷 221-225页

作者： YANGLi XUEChengshan WANGCuimei LIHuaixiang RENYuwen ChemistryFunctionMaterialsLab InstituteofSemiconductorsShandongNormalUniversityJinan250014China physicsDe0artment ShandongNormalUniversityJinan250014China InspectionInstituteforElectronicProductsofShandong Jinan250000China

Hexagonal gallium nitride films were successfully fabricated throughammoniating Ga_2._3 films deposited on silicon (111) substrates by electrophoresis. The structure,composition, and surface morphology of the formed films were characterized by X-ray diffraction(XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmissionelectron microscopy (TEM). The measurement results reveal that the polycrystalline GaN films withhexagonal wurtzite structure were successfully grown on the silicon (111) substrates. Preliminaryresults suggest that varying the ammoniating temperature has obvious effect on the quality of theGaN films formed with this method.

关键词： semiconductor materials GaN films electrophoresis Ga_2._3

Suppression　of　Interference　Speckles　in　the　Uniform　Line　Focus　System　of　Segmented　Wedge　Array　Using　Phase－disturbed　Plate

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Chinese Journal of Lasers 1996年第4期B5卷 363-370页

作者： LIU Zhongyong ZHENG Ruilun(physics department of South-West {2. university,Chongqing630715,china)SUI Zhan(Laboratory for Laser Fusion,Institute of Nuclear physics and Chemistry ,china Academy of Engineering physics,Chendu 610003, china)LU Baida CAI South West normal Univ Chongqing China

ＳｕｐｐｒｅｓｓｉｏｎｏｆＩｎｔｅｒｆｅｒｅｎｃｅＳｐｅｃｋｌｅｓｉｎｔｈｅＵｎｉｆｏｒｍＬｉｎｅＦｏｃｕｓＳｙｓｔｅｍｏｆＳｅｇｍｅｎｔｅｄＷｅｄｇｅＡｒｒａｙＵｓｉｎｇＰｈａｓｅ－ｄｉｓｔｕｒｂｅｄＰｌａｔｅ￥Ｌ... 详细信息

ＳｕｐｐｒｅｓｓｉｏｎｏｆＩｎｔｅｒｆｅｒｅｎｃｅＳｐｅｃｋｌｅｓｉｎｔｈｅＵｎｉｆｏｒｍＬｉｎｅＦｏｃｕｓＳｙｓｔｅｍｏｆＳｅｇｍｅｎｔｅｄＷｅｄｇｅＡｒｒａｙＵｓｉｎｇＰｈａｓｅ－ｄｉｓｔｕｒｂｅｄＰｌａｔｅ￥ＬＩＵＺｈｏｎｇｙｏｎｇ；ＺＨＥＮＧ...

关键词： phase-disturbed plate phase modulation time smoothing interference

Quantum Chemical Studies on the Mechanism of Producing Oxygenates in Fischer-Tropsch Synthesis on M/SiO2.M = Ni,Ru,Rh,Pd)

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Chemical Research in Chinese Universities 1995年第2期11卷 122-130页

作者： ZHU Tian-wei and HAO Zheng-ping (department of Chemistry,Inner Mongolia normal {2.,Huhehote,01002.) Lanzhou Institute of Chemical physics INNER MONGOLIA normal UNIV DEPT CHEMHOHHOT 010022PEOPLES R CHINA

EHMO calculations and orbital analyses of fragment;;have been performed for the formation of oxygenates in Fischer-Tropsch synthesis on the butterfly model for four different metal (Ni,Ru,Rh,Pd) catalysts supported on *** were made for the four processes,i.e.,CO-dissociation;Coupling of CO and H to produce CHO;Insertion of CO to M-CH3;insertion of CH2.to M-CH3 On the basis of comparing the degree of CO bonds activation and the energy barriers of the foregoing processes for these four catalysts,it is concluded that Ni/SiO2.can be used as the methanation *** Ru/SiO2.and Rh/SiO2.C2.oxygenated compound can be produced (acetaldehyde),especially Rh/SiO2.is the even better catalyst,and Pd/SiO2.is a methanol synthesis catalyst.

关键词： EHMO calculation Fischer-Tropsch synthesis Mechanism of producing oxygenates Group VIII supported metal catalysts

Trend,seasonal and diurnal variations of atmospheric CO_2.in Beijing

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Chinese Science Bulletin 2002年第24期47卷 2050-2055页

作者： WANG Yuesi, WANG Changke, GUO Xueqing, LIU Guangren & HUANG YaoLAPC, Institute of Atmospheric physics, Chinese Academy of Sciences, Beijing 100083, china {2. of Chemistry, Capital normal university, Beijing 100037, china LAPC Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China department of Chemistry Capital Normal University Beijing China

The concentration of atmospheric CO2.in Beijing increased rapidly at a mean growth rate of 3.7%·a-1 from 1993 to 1995. After displaying a peak of (409.7±2..9) μmol·mol-1 in 1995, it decreased slowly. Both the almost stable anthropogenic CO2.source and increasing biotic CO2.sink contribute to the drop of CO2.concentration from 1995 to 2.00. The seasonal variation of CO2.concentration exhibits a clear cycle with a maximum in winter, averaging (42..8± 2..6)μmol·mol-1, and a minimum in summer, averaging (369.1±6.1)μmol·mol-1. The seasonal variation of CO2.concentration is mainly controlled by phenology. The mean diurnal variation of atmospheric CO2.concentration for a year in Beijing is highly clear: daily maximum CO2.concentration usually occurs at night, but daily minimum CO2.concentration does in the daytime, with a mean diurnal difference more than 34.7μmol·mol-1. It has been revealed that the interannual variations of atmospheric CO2.concentration in winter and autumn regulated the

关键词： atmospheric CO2 annual variation seasonal variation diurnal variation urban environment.

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冷凝器滴状冷凝的动态描述及接触角的选择

物理学报 2002年第1期51卷 25-30页

作者：曹治觉湖南师范大学物理系中南大学应用物理与热能工程系长沙410083

从化学势变化的角度对液滴的冷凝过程进行了动态描述 ;给出了实现持续的Brown凝并的条件 ;结合冷凝器壁面液滴的脱落半径与接触角的关系 ,求出了滴状冷凝时液滴接触角的最优选择范围 .

关键词：化学势临界体积 Brown凝并接触角脱落半径冷凝器滴状冷凝动态描述传热学