非平衡Al等离子体三温自由程的数值模拟

在非平衡系统中,采用三温(光子温度t_γ,电子温度t_e和离子温度t_i)模型来计算光子能流的自由程;通过解速率方程得到电子的占据几率P_i,讨论了它与用Femi-Dirac分布函数算得的n_f之间的差别;给出了Al等离子体三温自由程的数值模拟结果。     

光电过程原子能级截面大量计算的实现

在HFR方法的基础上,考虑束缚组态间的相互作用,解决了Cowan程序光电计算过程中小能量区间误差偏大及一次计算自由电子能量范围受限制的问题,确定了阈能点的计算方式,从而使大量计算成为可能。分析证明了计算结果的正确性并估计了计算精度。并对锂、钠与铯原子计算的结果与参考文献做了比较,从理论上分析了能极水平光电截面求和后的结果与轨道水平光电截面的过渡关系与差别。     

Ionization Balance in Non-Local-Thermodynamic-Equilibrium Plasmas

A collisional-radiative model is developed for population calculations of plasmas in non-local thermodynamic equilibrium. The rate equations in detailed configuration accounting are solved to obtain ion populations. The configuration averaged rate coefficients are used in the rate equations. The cross sections are calculated based on the first perturbation theory. Wavefunctions required in cross section calculations are obtained by the Hartree-Fock-Slater self-consistent-field model. This kinetic model is applied to low- and medium-Z as well as high-Zplasmas. The results are compared with those of other theoretical models and experiments. The comparisons show that the present results of the mean charge statetheoretical ones, while for high-Z elements, the presentthe experimental ones.for low- and medium-Z elements agree well with other theoretical ones, while for high-Z elements, the present mean ionization stages are about two stages lower than the experimental ones.     

Theoretical Calculations of Opacity for Non-Local-Thermodynamic-Equilibrium Plasmas

A method is presented to calculate the spectral-resolved opacity for non-local-thermodynamic-equilibrium plasmas. With the present method, the configuration population is obtained by solving the rate equations within the framework of configuration-averaged approximation in which the cross sections are calculated based on the first-order perturbation theory. The transition properties are calculated by using the unresolved transition array model. As the illustration, the frequency-dependent opacities of AI and Au plasmas are calculated and compared with the simulation results of the super configuration collisional radiative code. General agreements are obtained and there are some discrepancies for opacity of high-Z elements.     

Opacity Calculations for Non—Local Thermodynamic Equilibrium Mixtures

Based on the average atom model,a non-local thermodynamic equilibrium (non-LTE) model is developed to calculate opacity for mixtures.This model could be applied to high-Z problems.The mean ionization degrees of SiO2 of the present calculation are slightly higher compared with another model for mixtures.As an example.the opacity of Au and Nd mixture is calculated.The results show concrete non-LTE effects and the increase in opacity of the mixture is shown clearly.     

CD_(44)拼接变异体在宫颈癌中表达及相关分析

CD44是细胞表面粘附分子，在介导淋巴细胞归集中起着重要作用，探讨CD44变异体与肿瘤转移的关系从而对预后进行预测，对指导治疗有着重要意义。本研究采用免疫组化方法检测CDu变异体V6（CD44V）在宫颈癌的的表达，发现：宫颈癌淋巴结转移组中呈明显过表达，阳性率为78．9％，结果表明CD44V与肿瘤转移密切相关。     

求解含温Thomas—Fermi方程的打靶法

提出一种直接求解在某温度，密度条件下Ｔｈｏｍａｓ－Ｆｅｒｍｉ（以下简称ＴＦ）方程的数值计算方法－打靶法。同时介绍了为使打靶法收敛而采用的调节试探值的方法，最后给出一些元素的计算结果。     

组态相互作用和相对论修正对类He离子双电子谱的影响

研究了组态相互作用和相对论修正对低Z(原子序数)及中等Z类He离子双电子谱的影响,使用准相对论及非相对论的Hartree-Fock自洽场方法计算了描写双电子伴线的原子参数。计算结果表明,(1)组态相互作用对类He离子双电子诺有显著影响;(2)对中等Z的类He离子,仅以能量微扰的形式计入相对论修正是不足够的,为了获得更加精确的计算结果,不仅要考虑相对论修正对单、双激发态能量的影响,而且要考虑该效应对径向波函数的影响。     

硫蒸发器防治灰霉病药效及安全性试验

灰霉病是杭州瓜类作物上的一种主要病害,为害幼瓜、叶茎。除了侵染葫芦、黄瓜等瓜类作物外,还侵染番茄、茄子、菜豆、莴笋和辣椒等多种蔬菜。尤其春季气温不高,阴雨多湿,棚内湿度大,结露时间长,放风不及时,发病普遍,为害严重。为明确硫蒸发器药剂1对灰霉病的防治效果及安全性,为瓜果蔬菜无公害生产提供一项新型的气防技术,以确保瓜果、蔬菜更优质、安全、高效、经济的生产。2003年市植保站在杭州市萧山区进行了硫蒸发器防治灰霉病药效试验。现将试验结果总结如下。材料与方法⒈供试作物葫芦⒉供试药剂广丰硫蒸发器、0.3%灰霜特可湿性粉剂(市…     

分布式存储环境下非平衡刚性方程组的数值并行计算

采用非平衡刚性方程组的数值模拟计算来研究辐射的非平衡现象,分析了数值模拟计算过程中的并行性,提出一种负载平衡方法,为了增加数据局部性提出了一种多机串行计算方法.给出相应的并行算法,分析了并行算法的通信复杂性,给出了工作站机群上的测试结果.