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ARC-TRANSITIVE CUBIC GRAPHS OF ORDER 4_p

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Chinese Annals of Mathematics,Series B 2004年第4期25卷 545-554页

作者： XUMINGYAO ZHANGQINHAI ZHOUJINXIN SchoolofMathematicsandComputerSciences ShanxiTeachersUniversityLinfen041004ShanxiChina SchoolofMathematicsandComputerSciences ShanxiTeachersUniversityLinfen041004ShanxiChina.

In this paper, a complete classification of arc-transitive cubic graphs of order 4p is given.

关键词： Arc-transitive graph Cubic s-regular graph Coverings of a graph

DNA detection based on Mn-doped ZnS quantum dots/methylene blue nanohybrids

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Chinese Chemical Letters 2016年第5期27卷 773-778页

作者： Yan Li Yan-Ming Miao Mao-Qing Yang Yu-Xia Wu Gui-Qin Yan Shanxi Normal University Linfen 041004 China

Nanohybrids were formed from 3-mercaptopropionic acid （MPA）-coated Mn-doped ZnS quantum dots （QDs） and methylene blue （MB） via electrostatic interaction, and then used in the detection of trace DNA. The principle of detection is as follows： MB binds with Mn-doped ZnS QDs via electrostatic interaction, and then quenches the room temperature phosphorescence （RTP） of the QDs through photoinduced electron-transfer （PIET）. After the addition of DNA, MB binds with DNA through intercalation and electrostatic interaction, and desorbs from the surfaces of Mn-doped ZnS QDs, which recovers the RTP of the QDs. On this basis, a DNA detection method based on the properties of RTP was set up. This method shows a detection range of 0.2-20 mg/L, and a detection limit of 0.113 mg/L. Since this method is based on the RTP of QDs, it is not interfered by the background fluorescence or scattering light in vivo, and thus, avoids complex sample pretreatment. Thus, this method is very feasible for detection of trace DNA in biofluids.

关键词： Room temperature phosphorescence Photoinduced electron-transfer DNA Quantum dots Methylene blue

Structure and stability of boron nitride cages

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Chinese Science Bulletin 2003年第11期48卷 1102-1107页

作者： WU Haishun XU Xiaohong JIAO Haijun ZHANG Fuqiang JIA Jianfeng Department of Chemistry Shanxi Normal UniversityDepartment of Chemistry Shanxi Normal UniversityDepartment of Chemistry Shanxi Normal UniversityDepartment of Chemistry Shanxi Normal UniversityDepartment of Chemistry Shanxi Normal University Linfen 041004 China Linfen 041004 China Linfen 041004 China Linfen 041004 China Linfen 041004 China

The structure and energy of boron nitrides, (BN)n (n = 10—41), have been investigated theoretically. The most stable cages have been constructed on the basis of a simple design principle, and the predicated stability has been validated at the B3LYP/6-31G* level of theory. Among these, the Th symmetrical (BN)12 cluster has been confirmed to be the most stable cage on the basis of the calculated disproportation energy and binding energy per BN unit.

关键词：硼氮化合物稳定性结构 BN 分解能结合能

Effect of multiple rescattering processes on harmonic emission in spatially inhomogeneous field

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Chinese Physics B 2018年第3期27卷 280-285页

作者： Cat-Ping Zhang Chang-Long Xia Xiang-Fu Jia Xiang-Yang Miao College of Physics and Information Engineering Shanxi Normal University Linfen 041004 China College of Chemistry and Materials Science Shanxi Normal University Linfen 041004 China

The effect of multiple rescattering processes on the harmonic emission from He atom in a spatially inhomogeneous field is discussed by solving the one-dimensional time-dependent Schrtdinger equation and the classical equation of motion. By establishing the physical model of the harmonic emission in the inhomogeneous field, we discuss the related characters of the multiple rescatterings process in the harmonic generation process. It shows that the second rescattering rather than the first rescattering tends to determine the harmonic cutoff energy when the inhomogeneous parameter is larger than 0.0055. Additionally, with the classica/simulation, the underlying physical mechanism of the continuum-continuum harmonics is also revealed. Moreover, this work may provide new physical insight into the harmonic generation in an inhomogeneous field, and is beneficial to further extract the harnaonic emission from molecular systems.

关键词： high-order harmonic generation multiple rescatterings spatially inhomogeneous field

Room-temperature ferromagnetism enhancement in Fe-doped VSe2nanosheets synthesized by a chemical method

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Rare Metals 2021年第9期40卷 2501-2507页

作者： Li-Yan Hu Li-Fang Yu Huan Yang Xian Xu Fang Wang Xiao-Hong Xu School of Chemistry and Materials Science Shanxi Normal UniversityLinfen 041004China Key Laboratory of Magnetic Molecules and Magnetic Information Materials Ministry of EducationLinfen 041004China Research Institute of Materials Science Shanxi Normal UniversityLinfen 041004China Collaborative Innovation Center for Shanxi Advanced Permanent Magnetic Materials and Technology Linfen 041004China

Two-dimensional(2 D)few-layerVSe_(2),V_(1-x)Fe_(x)Se_(2) nanosheets have been synthesized by a hightemperature organic solution-phase method. The thickness of VSe_(2) nanosheets can be tuned from 12 to 5 layers by decreasing the precursor concentrations. The few-layer VSe_(2) nanosheets show the room-temperature ferromagnetism. The coercivity and magnetization reach 0.024 T and 0.036 mA·m^(2)·g^(-1) at room temperature. The chargedensity wave behavior is also confirmed in VSe_(2) by the hysteresis loops and zero-field-cooling curve. V_(1-x)Fe_(x)Se_(2) nanosheets can be obtained by doping Fe(acac)3 in the reaction process. The room-temperature coercivity and magnetization of V_(0.8)Fe_(0.2)Se_(2) nanosheets are 5 times higher than those of the pure VSe_(2) nanosheets without destroying the structures. The enhancement of magnetization is due to the coupling interaction of 3 d orbits between V and Fe atoms. Higher Fe concentration is beneficial to improve the coercivity, which is attributed to the formation of the second phase Fe3 Se4. This simple chemical preparation method can be extended to prepare the other 2 D materials.

关键词： VSe2 Fe doping Two-dimensional nanosheets Room-temperature ferromagnetism Chemical method

Double differential cross sections for ionization of H by 75 keV proton impact:Assessing the role of correlated wave functions

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Chinese Physics B 2020年第12期29卷 72-81页

作者： Jungang Fan Xiangyang Miao Xiangfu Jia Key Laboratory of Spectral Measurement and Analysis of Shanxi Province Shanxi Normal UniversityLinfen 041004China College of Physics and Information Engineering Shanxi Normal UniversityLinfen 041004China College of Chemistry and Materials Science Shanxi Normal UniversityLinfen 041004China

The effect of final-state dynamic correlation is investigated for ionization of atomic hydrogen by 75-keV proton impact by analyzing double differential cross *** final state is represented by a continuum correlated wave(CCW-PT)function which accounts for the interaction between the projectile and the target nucleus(PT interaction).The correlated final state is nonseparable solutions of the wave equation combining the dynamics of the electron motion relative to the target and projectile,satisfying the Redmond’s asymptotic conditions corresponding to long range *** transition matrix is evaluated using the CCW-PT function and the undistorted initial *** the correlation effects and the PT interaction are analyzed by the present *** convergence of the continuous correlated final state is examined *** results are compared with the absolute experimental data measured by Laforge et al.[***.103,053201(2009)]and Schulz et al.[***.A 81,052705(2010)],as well as other theoretical models(especially the results of the latest non perturbation theory).We have shown that the dynamic correlation plays an important role in the ionization of atomic hydrogen by proton *** overall agreement between theory and the experimental data is encouraging,detailed agreement is still ***,such an analysis is meaningful because it provides valuable information about the dynamical correlation and PT interaction in the CCW-PT theoretical model.

关键词： ionization three-body Coulomb problem correlated wave functions double differential cross section

Phase transition of a diblock copolymer and homopolymer hybrid system induced by different properties of nanorods

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Chinese Physics B 2018年第5期27卷 526-533页

作者： Xiao-bo Geng Jun-xing Pan Jin-jun Zhang Min-na Sun Jian-yong Cen School of Physics and Information Engineering Shanxi Normal UniversityLinfen 041004China School of Chemistry and Materials Science Shanxi Normal UniversityLinfen 041004China

We investigated phase transitions in a diblock copolymer–homopolymer hybrid system blended with nanorods(NRs)by using the time-dependent Ginzburg–Landau *** systematically studied the effects of the number,length and infiltration properties of the NRs on the self-assembly of the composites and the phase transitions occurring in the *** analysis of the phase diagram was carried out to obtain the formation conditions of sea island structure nanorodbased aggregate,sea island structure nanorod-based dispersion,lamellar structure nanorod-based multilayer arrangement and nanowire *** analysis of the evolution of the domain sizes and the distribution of the nanorod angle microphase structure was *** simulation provides theoretical guidance for the preparation of ordered nanowire structures and a reference to improve the function of a polymer nanocomposite material.

关键词： self-assembly block copolymer nanowires

Determination of Baicalin in Traditional Chinese Preparation by High Performance Liquid Chromatography with Chemiluminescence Detection

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Chinese Chemical Letters 2004年第9期15卷 1067-1070页

作者： ErBaoLIU HongQingWEI XiuLiZHAO XiaoXiaLI FengXianJIANG SchoolofChemistryandMaterialScience ShanxiNormalUniversityLinfen041004

A new method for the determination of baicalin with HPLC-CL was developed. The method was based on the chemiluminescence reaction between KMnO4 and baicalin sensitized from HCHO. The linear range was 3.7?0-6~9.8?0-5 mol/L with detection limit of 1.7?0-6 mol/L and the relative standard deviation was 2.5 % (Cs=6.6?0-5 mol/L, n=5). The method has been applied to the determination of baicalin in oral administration, injection, Scutellariae radix and granules with good results.

关键词： RP-HPLC chemiluminescence analysis baicalin.

Classical-field description of Bose-Einstein condensation of parallel light in a nonlinear optical cavity

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Chinese Physics B 2021年第11期30卷 185-195页

作者： Hui-Fang Wang Jin-Jun Zhang Jian-Jun Zhang School of Chemistry and Material Science Shanxi Normal UniversityLinfen 041004China School of Physics and Information Science Shanxi Normal UniversityLinfen 041004China

We study the Bose–Einstein condensation of parallel light in a two-dimensional nonlinear optical cavity,where the massive photons are converted into photon molecules(p-molecules).We extend the classical-field method to provide a description of the two-component system,and we also derive a coupled density equation which can be used to describe the conversion relation between photons and ***,we obtain the chemical potential of the system,and we also find that the system can transform from the mixed photon and p-molecule condensate phase into a pure p-molecule condensate ***,we investigate the collective excitation of the *** also discuss the problem how the spontaneous decay of an atom is influenced by both the phase transition and collective excitation of the coupling system.

关键词： parallel light Bose-Einstein condensation quantum phase transition collective excitation