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Initial boundary value problem of two dimensional unsteady diffusion equations is solved in this paper. By using time-dependent fundamental solution of two dimensional diffusion equations and the extension of double layer potential, we establish virtual boundary integral expression of diffusion equations. Then virtual boundary element method is used to implement the numerical computation.

本文在求解二维非定常扩散方程的初边值问题时，利用二维扩散方程与时间有关的基本解，基于双层位势的延拓，建立二维扩散方程的虚边界积分表达式，然后利用虚边界元法进行数值计算。

In this thesis, the virtual boundary integral equation is based on double layer potential with the virtual density to be determined on virtual boundary. Since this integral equation related to double layer potential only involves the computation of the normal derivative and second normal derivative of fundamental solution, the exponential integral function is not involved in it, so numerical computation for the exponential integral function is avoid.

本文则基于双层位势，引入虚拟矩密度函数来建立虚边界积分方程，并首先对时间变量进行解析积分，在虚、实边界上采用常单元和等额配点离散，该方程只涉及含基本解的法向导数及其二阶法向导数项的计算，对时间变量进行解析积分后，不会出现对指数积分函数的空间变量的积分计算。

Cell routing is based on the principle of logical channels with dual identification: the cell header contains the identifier of the basic connection to which the cell belongs-called a virtual circuit and the identifier of the group of VCs to which the connection belongs-called a virtual path.

信元寻找路由是基于带有双重识别的逻辑信道原理：信元头包含了信元所属的基本连接识别符，这种基本连接称作虚电路，另一种是连接所属的 VC 组识别符，称作虚路径

The syndrome differentiation type distributing of ER negative and PR negative breast cancer and triple negative breast cancer is equipotent,The difference has no statistics meaning through chi-sguare(X2) test.

其中≤39岁组病人有病无证型病人所占比例最大，40～59岁病人有364例，其各证型的分布规律与总体样本(551例)病人分布差异不大，≥60岁病人中脾肾两虚型与肝肾阴虚型病人所占比例较大。

And modern Chinese medicine mainly raspberry think of temperature, acid, non-toxic, into the liver and kidney by the Second, has thirst, expectorant, detoxification, beauty and other functions, can be used to treat gout, erysipelas,emission, regular consumption of raspberry essence can not old gas light, so that hair is not white, notécontinued, strongyang, Yuet-taek skin, Anhe five internal organs, temperature in Yiqi, TB treatment and virtual wind damage, liver Mingmu.

而现代中医主要认为树莓性温，酸平、无毒，入肝肾二经，有止渴、祛痰、解毒、美颜等功能，可用于治疗痛风、丹毒、遗精等症，常食用树莓可益精气轻身不老，令发不白，补虚续绝，强阴健阳，悦泽肌肤，安和五脏，温中益气，疗痨损风虚，补肝明目。

Half penalty method and optimism design of ten connecting bar mechanism of plunger slide in double action drawing press;2. The essential boundary condition is imposed by employing a penalty method .

将选择施加在"虚结构"控制点上的虚载荷作为形状优化的设计变量，并将它与无网格Galerkin法相结合来开展结构形状优化研究，采用罚函数法来施加边界条件，通过直接微分法建立了结构形状优化的离散型灵敏度分析算法，利用无网格法研究了节点坐标关于设计变量导数的计算。

The results showed that LRK could significantly inhibit the mammary hyperplasia caused by estrin, reduce the content of serum 〓, raise P level, promote the production of DA in hypothalamus and mammary tissue, decrease the release of 5-HT, inhibit the secretion of serum PRL, reduce the sensitivity of mammary tissue to estrin and progestogen, prevent the expression of mammary tissue on PCNA, the effect was equal to triphenylamine oxide, obviously superior to the control group of Ru Zeng Ning.

通过实验研究，建立了具有肾虚肝郁证侯群的乳腺增生病理模型，利用免疫组化技术、图像分析系统、荧光分光光度法、放射免疫法等现代医学研究方法，从病理形态学、医用体视学、神经内分泌学、阴道细胞学等方面，观察了利乳康口服液对模型动物整体状态、乳腺组织病理形态、血清激素、神经递质以及卵巢功能的影响，结果表明利乳康口服液能明显抑制雌激素引起的乳腺组织增生，降低血清E〓含量，升高P水平，促进下丘脑及乳腺组织中DA的产生，减少5-HT释放，抑制血清PRL分泌，降低乳腺组织对雌、孕激素的敏感性，阻止乳腺组织PCNA的表达，其效应与三苯氧胺相当，明显优于乳增宁对照组；另外，利乳康口服液还能缓解模型动物肾虚肝郁证侯群，增加其体重，调节其整体状况，改善模型动物不规则动情周期，减轻其子宫及卵巢的病变，抑制子宫内膜的过度增长，调节卵巢功能，揭示了中药利乳康口服液对神经内分泌和卵巢功能的整体调控作用，以及对本病发生、发展的预防作用

The thesis analyzed chiefly on on law of physical sign disposition of deficiency of spleen-QI in pedo-eczema.Using pykno-analysis, data has been analyzed. We got 23 physical signs of statistical significance,and had non-conditional logistic regression analysis to them. We got 11 physical signs of great value in pedo-eczema diagnosis,including dim-coloured anthema, athrepsy body, weak pulse, diarrhea , etiolate complexion,light texture of tongue,soft skin, house-wife hand,dim qichi, fissured tongue, bluish tendon in shangen etal.And contrast with former diagnostic criteria of deficiency of spleen-QI published by TCM administration bureau, unearch part of the unnoticed physical signs.

论文着重分析了小儿湿疹脾气虚证的体征分布规律，采用频数分析方法，对数据进行统计学分析，分析出其中具有统计学意义的23项体征，并对其进行非条件性logistic回归分析，得出对小儿湿疹诊断具有重要价值的疹色暗淡，形体消瘦，脉无力，便溏，面色萎黄，舌质淡，尺肤松软，手掌纹理增多，气池暗，裂纹舌，山根青筋等11项体征，并与以往国家局的脾气虚证证候诊断标准对照，从而发掘出部分以往未被重视的体征。

The traditional virtual boundary integral expression is based on the extension of single layer potential, for the integral formulas related to single layer potential for parabolic problem, the numerical computation of the exponential integral function is unavoidable.

通常的虚边界积分公式是利用单层位势的延拓来建立虚边界元积分方程，但对带时间变量的单层位势，要涉及到指数积分函数的计算。

The non_singular fictitious boundary integral equations are derived by using the fundamental solutions and the singular points exterior to domain techniques.

利用基本解和域外奇点技术导出了弹性力学平面问题的非奇异虚边界积分方程，然后利用虚边界元－边界子段法对导出的积分方程进行数值求解。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。