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Objective To design and synthesize 7-anilino-3-cyano-5-alkylpyrazo [1, 5-a] pyrimidine derivatives and primarily evaluate their pharmacological activity.

目的 设计并合成7-芳胺基－3-氰基－5-烷基吡唑并[1，5-a]嘧啶类化合物，初步评价其药理活性。

Four new types of pyrimidine derivatives introduced directly by nitrogen-containing benzoheterocycles were designed and synthesized.

设计并合成了四种苯并含氮杂环取代的嘧啶类新化合物，它们的结构经 MS，IR和1 H NMR分析得到确

Objective To design and synthesize 7-anilino-3-cyano-5-alkylpyrazolo[1,5-a]pyrimidine derivatives and primarily evaluate their pharmacological activity.

摘要目的设计并合成7-芳胺基-3-氰基-5-烷基吡唑并[1，5-a]嘧啶类化合物，初步评价其药理活性。

The composite scattering between dielectric sea surface and a conducting plate above it is calculated by using Physical Optical method and reciprocity theorem. Meanwhile, the dependence of the plate size on the composite scattering field is considered. The Doppler spectrum and the chaotic characteristic for the time series of composite scattering field are analyzed. Finally, artificial neural networks and wavelet analysis are introduced into the study of the sea clutter to realize the purpose of target detection, the factors which affect the detection of the target are discussed and the solutions to these problems are given.

同时利用物理光学近似结合互异性原理计算了介质粗糙海面与其上方导体运动平板的复合散射，考虑了平板尺寸对复合散射场的影响，并对复合散射场时间序列进行了多普勒谱分析和混沌分析，最后将人工神经网络和小波分析引入到海杂波的分析当中，实现了海杂波中目标探测的功能并讨论了影响目标探测功能的因素以及解决这类问题的方法。

The equations of two classes of 3D polynomial maps that are equivariant with respect to the rotational symmetries of either a regular tetrahedron group or a regular octahedron group are strictly given, on the basis of which the properties of the general Julia sets created by these 3D polynomial maps are discussed and proved.

从理论上分析并证明了三维多项式映射满足等变的条件，精确地给出了关于正四面体群和正八面体群具有旋转不变对称性的两类三维等变映射的具体公式，在此基础上讨论并证明了三维多项式映射的广义Julia集所具有的性质。

The research is carried on from four aspects. One is, based on answering the above open problem on a finite dimensional Euclidean space by means of partially ordered theory, to research the existence of solutions, global error bounds of proximal solutions and sensitivity of parametric unique solutions and present a class of variable-parameter three-step iterative algorithms for generalized set-valued variational inclusion problems by using - resolvent operator of set-valued mapping.Two is to consider the convexity, closedness and boundedness of the solution set of general set-valued variational inclusion problems and the sensitivity of the parametric solution set by means of graphical convergence theory. Three is to discuss directly the existence of solutions by using analytical methods for set-valued mixed quasi-variational-like inequalities and suggest a class of direct variable-parameter three-stepiterative algorithms for solving generalized set-valued variational inclusions.

研究分有三个方面：一是借助于偏序理论在有限维欧氏空间中解决了上述公开问题，在此基础上利用集值映射的η-预解算子，研究了广义集值变分包含问题解的存在性、逼近解的全局误差界、参数唯一解的灵敏性，并提出了一类变参数三步迭代算法；二是借助于图收敛理论研究了一般集值变分包含问题解集的凸性、闭性和有界性以及参数解集的灵敏性；三是用分析的方法直接讨论了集值混合拟类变分不等式问题解的存在性并提出了一类求解广义集值变分包含问题的直接变参数三步迭代算法。

In Chapter 5,the pyrolysis of substituted six-membered ring model compound 4-methyl pyridine has been investigated.Instead of detail theoretical analysis of the reaction mechanism,the general results have been proposed from the products distribution and the combination of the pyrolysis investigation of its analogous pyridine.The major products are H_2,C_2H_2,C_4H_2,C_3H_3N and HCN,here HCN is not a primary initial product at low extent of decomposition.The mole fraction profiles of products have been obtained from the near threshold ionization.The pyrolysis of 4-methyl pyridine is initiated from the methyl abstraction and hydrogen abstraction procedures which are associated with the understanding of the soot formation and the NOX precursor correspondingly.

主要产物为H_2，C_2H_2，C_4H_2，C_3H_3N和HCN，其中HCN为非低温时的热解产物；通过近阈值电离并导出物种随温度变化的摩尔分数曲线，更详细地定量地描述了产物随温度的变化。4-甲基吡啶热解主要从母体脱甲基和脱氢两个初始反应出发，一种趋势是形成大质量数的苯并或杂环的多环化合物，有助于了解炭黑形成过程中的复杂化学过程；另一趋势是开环生成小的碳氢和腈类物质，实验得出的含氮物质的种类及随温度变化有助于了解NO_x的前驱物质的形成及其变化规律。

The essay reviews previous study on this topic and A-share listed firms that have periodically rotated auditors during the period form 2003 to 2005 will be selected as research sample. Basing on whether or not the listed firm changes the accounting firm, the sample will be classified into two group—internal auditor rotation group and external auditor group.

本文在回顾国内外重要文献的基础上，选取2003-2005年进行审计师定期轮换的A股上市公司作为研究样本，并将其按是否同时变更会计师事务所分为内部轮换和外部轮换两类，使用调整后的截面Jones模型估计的操纵性应计利润绝对值计量盈余质量，并将其作为审计质量的衡量指标，对定期轮换与审计质量之间的关系进行了实证检验以分析定期轮换制度的实施对审计质量的影响。

This peak arises from the preferential rotation of the axes of carbon pairs existed in the specimen under the influence of an alternating load.

在外加应力的作用下，这类碳原子对轴的择尤旋转便引起了内耗。根据这个机构并结合内耗测量过程中试样内部碳原子重新分布的情况，可以推导出碳浓度和内耗峰高度之间的定量关系，并从而求出合金的点阵空位形成能和构成碳原子对时所放出的能量。

It's much easier to fix a bug that the compiler catches and much harder to detect and fix a run-time error, so the generic class provides a clear benefit.

尽早的确定这个 bug 并在编译器中捕获它，与一个难以察觉并确定的运行时错误相比，泛型类提供了一个明确的好处。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。