CD4^+T细胞在调节机体适应性免疫应对各种炎症反应过程中扮演着重要的角色,初始的T细胞可以在不同的细胞因子影响下分化为至少4种以上的T细胞亚群:Th1、Th2、Th17、调节性T细胞(regulatory T cell,Treg)等,它们参与各种各样的免疫应答反...CD4^+T细胞在调节机体适应性免疫应对各种炎症反应过程中扮演着重要的角色,初始的T细胞可以在不同的细胞因子影响下分化为至少4种以上的T细胞亚群:Th1、Th2、Th17、调节性T细胞(regulatory T cell,Treg)等,它们参与各种各样的免疫应答反应,在口腔癌及癌前疾病中起到不同的作用,功能各异。Th1/Th2平衡和Th17/Treg平衡与口腔癌及癌前疾病的发生及发展都与免疫失衡有关。逆转这两种平衡的失调,加强患者的自身免疫功能,可能用来阻止甚至逆转口腔癌及癌前病损的疾病进程。本文就CD4^+T细胞平衡在口腔癌及癌前病损中的研究进展作一综述。展开更多
Using the time-dependent pseudo-spectral scheme, we solve the time-dependent Schrodinger equation of a hydrogen- like atom in a strong laser field in momentum space. The intensity-resolved photoelectron energy spectru...Using the time-dependent pseudo-spectral scheme, we solve the time-dependent Schrodinger equation of a hydrogen- like atom in a strong laser field in momentum space. The intensity-resolved photoelectron energy spectrum in abovethreshold ionization is obtained and further analyzed. We find that with the increase of the laser intensity, the abovethreshold ionization emission spectrum exhibits periodic resonance structure. By analyzing the population of atomic bound states, we find that it is the multi-photon excitation of bound state that leads to the occurrence of this phenomenon, which is in fairly good agreement with the experimental results.展开更多
We systematically investigate the influence of atomic potentials on the above-threshold ionization （ATI） spectra in one-dimensional （1D） cases and compare them with the three-dimensional （3D） case by numerically...We systematically investigate the influence of atomic potentials on the above-threshold ionization （ATI） spectra in one-dimensional （1D） cases and compare them with the three-dimensional （3D） case by numerically solving the time-dependent Schrrdinger equation. It is found that the direct ionization plateau and the rescattering plateau of the ATI spectrum in the 3D case can be well reproduced by the 1D ATI spectra calculated from the supersolid-core potential and the soft-core potential, respectively. By analyzing the factors that affect the yield of the ATI spectrum, we propose a modified-potential with which we can reproduce the overall 3D ATI spectrum. In addition, the influence of the incident laser intensities and frequencies on the ATI spectra calculated from the proposed modified potential is studied.展开更多
文摘CD4^+T细胞在调节机体适应性免疫应对各种炎症反应过程中扮演着重要的角色,初始的T细胞可以在不同的细胞因子影响下分化为至少4种以上的T细胞亚群:Th1、Th2、Th17、调节性T细胞(regulatory T cell,Treg)等,它们参与各种各样的免疫应答反应,在口腔癌及癌前疾病中起到不同的作用,功能各异。Th1/Th2平衡和Th17/Treg平衡与口腔癌及癌前疾病的发生及发展都与免疫失衡有关。逆转这两种平衡的失调,加强患者的自身免疫功能,可能用来阻止甚至逆转口腔癌及癌前病损的疾病进程。本文就CD4^+T细胞平衡在口腔癌及癌前病损中的研究进展作一综述。
基金Project supported by the National Basic Research Program of China(Grant No.2013CB922200)the National Natural Science Foundation of China(Grants Nos.11274141,11034003,11304116,11274001,and 11247024)the Jilin Provincial Research Foundation for Basic Research,China(Grant No.20140101168JC)
文摘Using the time-dependent pseudo-spectral scheme, we solve the time-dependent Schrodinger equation of a hydrogen- like atom in a strong laser field in momentum space. The intensity-resolved photoelectron energy spectrum in abovethreshold ionization is obtained and further analyzed. We find that with the increase of the laser intensity, the abovethreshold ionization emission spectrum exhibits periodic resonance structure. By analyzing the population of atomic bound states, we find that it is the multi-photon excitation of bound state that leads to the occurrence of this phenomenon, which is in fairly good agreement with the experimental results.
基金Project supported by the National Basic Research Program of China(Grant No.2013CB922200)the National Natural Science Foundation of China(Grant Nos.11274141,11034003,11304116,11274001,and 11247024)the Jilin Provincial Research Foundation for Basic Research,China(Grant No.20140101168JC)
文摘We systematically investigate the influence of atomic potentials on the above-threshold ionization （ATI） spectra in one-dimensional （1D） cases and compare them with the three-dimensional （3D） case by numerically solving the time-dependent Schrrdinger equation. It is found that the direct ionization plateau and the rescattering plateau of the ATI spectrum in the 3D case can be well reproduced by the 1D ATI spectra calculated from the supersolid-core potential and the soft-core potential, respectively. By analyzing the factors that affect the yield of the ATI spectrum, we propose a modified-potential with which we can reproduce the overall 3D ATI spectrum. In addition, the influence of the incident laser intensities and frequencies on the ATI spectra calculated from the proposed modified potential is studied.
