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| 1 | Stimulatory Effects of NMDA on Intracellular Ca^(2+) Nonlinear Kinetic Model in Rat Dorsal Root Ganglion Neurons显示文摘The present study revealed the stimulatory effects of NMDA on intracellular ca 2+ concentration in rat dorsal root ganglion (DRG) neurons. Fura 3/AM, an intracellular calcium fluorescent indicator was used to monitor the fluctuation of 〔ca 2+ 〕 i. Here we present the evidence that (1) Confocal microscopy resolved the cells of three different sizes, based on which a cell diameter distribution histogram was drawn. The fluorescence signals originated from the cells of different sizes, small size (diameter<30μm), medium size (diameter between 30 to 50μm),and large size (diameter>50μm); presumably intracellular Ca 2+ concentration was different in the cells of different sizes. (2) The time related variation of fluorescence intensity was observed. In particular, the fluorescence intensity in 0 Ca 2+ bath solution was affected by the application of high ca 2+ solution. (3) In 0 ca 2+ bath solution the intracellular Ca 2+ concentration nonlinear properties of distinct diameter cells was described. (4) A kind of SETAR model was fitted with a medium sized cell.(5)The residuals from the fitted model were tested to see whether they were plausibly Gaussian. These findings indicated that in distinct types of cells intracellular Ca 2+ concentration had different characteristics in different DRG neurons, and contributed to different functions of these neurons. Besides, the established threshold autoregressive model can share intracellular ca 2+ with the main nonlinear kinetic | LAN Tong Han 1, LI Guo Hua 2, LI Zhi Wang 2, LIN Jia Rui 11 Department of Biomedical Engineering,Huazhong University of Science and Technology, Wuhan 430074,China 2 Department of Molecular and Cellular Neurobiology, Research Center of Experimental Medicine, Huazhong University of Science and Technology, Tongji Medical college, Wuhan 430030,China | 2002 | Chinese Journal of Biomedical Engineering(English Edition)2002，11，4： | 3 |
| 2 | Risk of cerebrovascular events associated with antidepressant use in patients with depression: a population - based, nested case control study显示文摘 | Chen Y Guo 11 u H | 2008 | Ann Pharmacother2008，42，2： | 1 |
| 3 | Concentration modulation laser spectroscopy of the C_2 molecule Swan (d^3Π_g←a^3Π_u) system显示文摘The rotational structure of the C 2 molecule Swan (d 3 Π g←a 3 Π u) system (0,1) band has been recorded by optical heterodyne magnetic rotation enhanced concentration modulation laser spectroscopy in the range of 17730~17880 cm -1 . The C 2 molecule is generated by an electric discharge through a mixture of acetylene and argon gas and a well resolved spectrum is recorded with an absolute accuracy of 0.007 cm -1 . Sensitivity of the method enables us to observe not only the traditionally observed branches of Δ Ω =0 sub bands but also some Δ Ω ≠0 transitions, providing a slight improvement in the accuracy of some molecular constants of the two states. The theoretical spectra are simulated using the effective Hamiltonian of Brown and Merer and directly fitted to observed spectra; rotational parameters are derived from this fit for the two 3Π states. | KANIKI Kakule 1,2 , YANG Xiaohua 1, GUO Yingchun 1, YU Shanshan 1, LI Benxia 1, LIU Yuyan 1 and CHEN Yangqin 1*(1. Key Laboratory of Optical & Magnetic Resonance Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China 2. Faculty of Engineering, University of Kinshasa, P. O. Box 225, Kinshasa 11, Dem. Republic of Congo) | 2003 | Progress in Natural Science:Materials International2003，13，10： | 1 |
| 4 | Structure and Magnetostriction of (Dy_(0.7)Tb_(0.3))_(0.5)Pr_(0.5)Fe_x Alloys (1.10≤x≤1.85)显示文摘The structure and magnetostriction of R0.5Pr0.5Fex (R = Dy0.7Tb0.3,1.10 ≤x≤1.85) alloys were investigated. It was found that the matrix of arc-melting R0.5Pr0.5Fex alloys is the (Dy, Tb, Pr) Fe2 phase with the MgCu2-type cubic structure and the second phase is rare earth-rich phase when x<1.25. In the range of 1.40≤x<1.55, the second phase is (Dy, Tb, Pr)Fe3 and it becomes the main phase when x >1.55. The crystalline structure of mechanically grinding R0.5Pr0.5Fex alloys is similar to that of the arc-melted alloys. The magnetostriction of the alloys increases with increasing Fe content when x ≤1.25 and decreases when x >1.25. | Bowen WANG, Weili LIU, Guang JIN and Jianzhi BI (Department of Materials Enginerring, Shenyang Institute of Technology, Shenyang 110015, China) Ximei JIN, Zhijun GUO and Zhidong ZHANG (Institute of Metal Research, Chinese Academy of Seiences, Shenyang 11 | 2000 | Journal of Materials Science & Technology2000，16，2： | 0 |
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