However , one weakness of quantitative simulation is the difficulties of determining parameters with existing experimental results ; and the dynamical behavior of the system will change with different parameter sets . thus it is necessary to construct qualitative models to complement the quantitative models . we constructed the qualitative model with gna ( genetic network analyzer ) and analyze 而且我们提出了可以用来检验pka的作用是通过cdc25 ， mytl还是联合作用的实验理论依据，这样的电脑模拟为继续进行下一步的试验提供了一个思路，如果精确的测量在mpf激活过程中各个不同的激酶的活性，就能够鉴别pka的具体作用机制，我们还研究了mapk的作用。
Using this system , we have studied matrine - inhibittory effect and trifluoperation - neuroprotection effect in hippocampal slices , also discussed the mechanism of long - term potentiation using anesthetic rats . the experiment results showed that matrine can inhibit the hyperactivity induced by penicillin sodium in dosage by changing the relative parameters of field potential ; trifluoperation can alter ps change with the time , enhance the degree and the ratio of ps recovery , then minis the hypoxic injury ; high frequency stimulate can increase ps amplitude and epsp slope for long time , buildup the in / out function of nerve cells , and enhance synaptic plasticity 结果表明，苦参碱能够剂量依赖性地抑制青霉素诱导的神经元顺向信号传导激活过程，使细胞外记录到的场电位各个参数发生相应改变；三氟拉嗪可以改变ps的时相变化，提高ps的恢复程度和恢复率，减小了神经元因缺氧引起的不可逆损伤；高频刺激( highfrequencystimulate ， hfs )可以长时间的增强ps的幅度和epsp的斜率，进而增强神经元的输入输出功能，增加了突触的可塑性。
In this paper the latter is discussed in detail . firstly , this paper analyzes and compares the different 3d display techniques synthetically and the control architecture of static volume display system is built . then this paper discusses how to choose the image space material and the voxel activation process and optical layout of such a system 首先,本文综合分析比较了各种三维显示技术,提出了静态成像系统的控制结构,分析了成像空间材料的选取方法、体素的激活过程和光学系统的组成,重点阐述了体素空间排列、入射光的强度与体素亮度的关系。
