系数环

The content of 1,8-cineole in eucalyptus oil was determined using cyclohexanone or acetophenone as internal standard.

通过用环己酮和苯乙酮作内标物，对含量 80 %桉叶油中 1，8-桉叶油素含量的测定进行比较，结果表明，用苯乙酮作内标测定，标准偏差为 0 。2 7，变异系数为 0 。33%，而且毒性较小，是较理想的内标物。

Apparent partition coefficient in octanol-water and binding percentage to BSA of ~(153)Sm-NTMP,~(153)Sm-HEDTMP,~(153)Sm-DCTMP,~(153)Sm-EDTMP,~(153)Sm-DTPMP,~(113,117) Sn~m-EDTMP,~(113,117) Sn~m-HEDTMP,~(113,117) Sn~m-DTPMP are measured. The results show that there is a linear relationship between the relative magnitude of the apparent partition coefficient in octanol-watetr and the relative magnitude of the binding percentage to BSA of these ~(153)Sm~(113,117Sn~m complexes.

测定了NTMP，HEDTMPN (羟乙基乙二胺基三亚甲基膦酸，DCTMP(1，2 环己二胺四亚甲基膦酸)，EDTMP(乙基二胺基四亚甲基膦酸)，DTPMP(二乙基三胺基五亚甲基膦酸)的153Sm配合物以及HEDTMP，EDTMP，DTPMP的113，117Snm配合物在正辛醇水中的表观脂水分配系数和在0 5%牛血清白蛋白水溶液中与BSA的结合率。

Under an infinite-horizon risksensitive cost criterion, the controller designed can guarantee an arbitrary small longterm average cost for arbitrary risk-sensitivity parameter and achieve boundedness in probability for the closed-loop system using the integrator backstepping methodology.

在无限时区风险灵敏度指标下，应用积分反推技术，设计了控制器。所设计的控制器能够保障对任意风险灵敏度系数具有任意小的指标，并且闭环系统为概率意义下有界的。

Scene data indicate that in the process of actual making the casing into the Horizontal Well ,people used to reduce friction coefficient between the stratum and the Casing, Change the friction type between the casing and the wall,use special casing and centralizer with oriented ring, even join the slurry in the internal casing in order to increase self-casing, etc.

现场资料表明，在实际套管下入过程中，人们往往采用的是减小套管与井壁之间的摩擦系数、改变套管与井壁间的摩擦类型，使用带有导向环的套管和扶正器，甚至在套管内部加入泥浆，以增加套管自重等方法，但这些方法并没有改变套管下入驱动力减少的现实，不能从根本上解决套管下入困难的问题。

In terms of the theory of algebraic geometry, the problem of characteristic polynomial assignment of the closed-loop systems is transferr.

以代数几何方法为工具，将此闭环系统的特征多项式配置问题转化为判别有理映射是否为到上的，推导出多输入的 2 D广义系统Roe sser模型由状态反馈几乎任意配置特征多项式系数的充分条件。

Objective To evaluate the clinical implication of coefficient of variation of cyclosporine blood concentration.

目的 研究环孢素A血药浓度变异系数的临床意义。

Schwartz mapped the interior of each fluid cycle in the physical plane into an annulus of unit outer radius in the mapping plane according to the conformal transformation. And the perturbation theory is the main way of solving conformal parameters.

L.W.Schwartz的关于定常二维非线性波算法的主要思想是为了利用已知速度势的解析解，将一个波长的自由表面同底部所限定的流域采用合适的保角变换函数变换为映射平面上一圆环，在求解保角变换函数的变换系数时采用摄动理论进行求解。

Based on the series expansion technology in complex potential theory established by Muskhelishvili the complex stress functions can be estabished. By utilizing the continuity principle of the boundary condition and the characteristics of far field and according to the comparison of the coefficients of the terms on both sides of the equation with the same exponent the present problem can be transformed into solving of linear equation set.

根据Muskhelishvili复势理论的级数展开技术，构造了合适的各区复应力函数；然后，利用边界上位移、力的连续性条件和远场的性态，通过等式两边同次幂指数的系数比较，将问题转化为线性方程组的求解；结合叠加原理，获得混凝土在此情况下环向应力的解析解答。

New ideas and methods in the paper:1 The formulas on perforated casing collapse strength were deducted, which offereda convenient method to analyze the relationship between casing collapse strength and perforation;2 The stress and displacement formulas on the system of casing, cement anddeformation under the non-uniform load were deducted, which offered the theoretical found for designing optimally casing string;3 The relationship between structure in-situ field of whole oil field and casing failurewere studied, which offered the scheme for the prediction of casing failure. The process of study in the paper:1 For simulating the relationship between the structure in-situ field and the casingfailure in the oil-deformation, the tests of the uniaxial tensile, compress, tnaxial compress and dilatability were made on the samples of the drill cores from deformation of casing failure position in Yuejing II oil field.

本文的主要创新： 1推导出了射孔套管抗挤强度的解析式，为分析射孔与套管强度的变化关系提供了简便的方法； 2推导出了非均匀地层载荷作用下套管、水泥环和地层组合体的应力和位移解析式，并非均匀作用下套管柱优化设计提供了理论依据； 3研究整个油田区块构造应力场与套管损坏关系，为预测套管损坏提供了可行方案；本文的研究过程如下： 1为模拟构造应力场与油层段套管损坏关系，做了大量的岩石单轴抗拉、单轴抗压、三轴试验以及岩石遇水膨胀试验，获得了研究区块岩石的弹性模量、泊松比、内聚力、内摩擦角以及岩石的线膨胀系数，这此数据为本文研究油层段套管损坏机理研究的理论分析和有限元法提供了实验数据。

In practical application item, UIC515 Code is firstly applied for analyzing the complete welded frame by finite element method to get the area with bigger nominal stress and lower fatigue behavior, and then study the hot spot stress fatigue strength evaluation approach of the typical fillet ring joint at the connection of tubular transom and side frame, the plate to plate end weld between side frame web plate and anti-yaw damper hold and the non-close ring end weld at the connection of braking unit hold and tubular transom.

在热点应力疲劳评估时，首先对焊接构架中的环向角焊缝、板间端焊缝以及非闭合环向端焊缝进行简化，得出了相应的几何应力集中系数和热点应力疲劳极限，为热点应力疲劳评估提供了依据。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。