分离系数

The concentration of D-phenylalanine in the external phase and the separation factorαcan be expressed as: The diffusion of boundary layer in outer aqueous phase is the controlled process while the concentration of D-phenylalanine in the external phase far less than the concentration of chiral carrier in the emulsion liquid membrane phase, then the diffusion coefficient k_e of boundary layer in outer aqueous phase can be achieved by data fitting.

外水相苯丙氨酸对映体的浓度以及分离因子α表示为：当外相对映体浓度远小于液膜相手性载体浓度时，该手性传质过程中外相边界层的扩散为控制步骤，利用数据拟合得到了外水相与液膜相界面边界层扩散的传质系数k_e。

N-methylacetamide was used as entrainer in separating acetic acid from water with extractive distillation ,and the interaction mechanism in this process was studied by using the density functional theory.

文献[1-4]认为萃取精馏分离乙酸水溶液过程中萃取剂与乙酸之间的氢键作用改变了溶液中乙酸和水的活度系数关系，从而改变了两者之间的相对挥发度，使得水和乙酸的分离变得相对容易。

The results indicate that in the present research range of renumber and constructional paraments, the enhanced heat transfer capability of the pin-fin with gap is not obvious, and the pressure drop is taller than that of no gap.

计算结果表明：在本文的参数范围内，与完整扰流柱相比，分离结构扰流柱的换热效果略有增强，而阻力系数随之增大，分离位置居中的扰流柱通道的换热效果最好。

Meanwhile, several physicochemical descriptors of xanthone molecules were calculated by using quantum chemistry method.

同时，运用量子化学计算了山酮分子的物化参数，并选择相互作用能、疏水常数(log P；其中P为正辛醇-水分配系数)和山酮分子总能量作为分析结构-电泳迁移定量关系的物化参数，用以研究分离机制及在毛细管区带电泳分离中山酮类化合物与β-CD 和磺酸化β-CD间的分子识别过程。

Meanwhile, several physicochemical descriptors of xanthone molecules were calculated by using quantum chemistry method. Among the physicochemical parameters, interaction energy, the logarithms of octanol-water partition coefficient and total energy of xanthone molecules were selected to investigate the separation mechanism and describe molecular recognition process between the xanthones and the CDs in CZE by means of quantitative structure-electromigration relationships.

同时，运用量子化学计算了山酮分子的物化参数，并选择相互作用能、疏水常数(log P；其中P为正辛醇-水分配系数)和山酮分子总能量作为分析结构-电泳迁移定量关系的物化参数，用以研究分离机制及在毛细管区带电泳分离中山酮类化合物与β-CD 和磺酸化β-CD间的分子识别过程。

It is a nonlinear system and it is not necessary to assume that wavelet is minimum phase. Wavelets and reflection coefficients can be separated in homomorphic deconvolution; however, how to choose the optimum wavelet needs a lot of manual time and processing experiences.

它是一种非线性系统，对地震子波不做最小相位的假设条件，只需能分离出地震子波和反射系数，在分离出的地震子波当中，如何选取最合适的地震子波是一个需要花费大量的人工时间和需要一定的经验。

The running buffer consists of 10 mmol/L tetraborate (pH 10.0) and 10 mmol/L β-CD. The applied voltage was 25 kV and the detection wavelength was 214 nm. The eight aromatic acids were completely separated and determined within 9 min. The linear relations were from 5 μg/mL to 120 μg/mL and their correlation coefficients were between 0.9967 and 0.9992. The method was rapid, simple and effective.

实验优化了分离测定条件，以pH 10.0的含有10 mmol/Lβ-环糊精的硼砂缓冲溶液(10 mmol/L)作为电泳缓冲液，工作电压25 kV，检测波长214 nm， 9 min内实现了8种芳香族羧酸的基线分离，芳香族羧酸在5~120μg/mL范围内呈良好的线性关系，其相关系数在0.9967到0.9992之间。

The signals during transformer impulse test are considered to be evolving in time, also is non-stationary signals, so we can design a software algorithm for noise reduction based on discrete Gabor transform, and the basic principle is: The Gabor coefficients of Effective signals during transformer impulse test is centralized in the time frequency range, and the peak-to-peak value is big, whereas the noise Gabor coefficient distribute in the entire time frequency range equally, the peak-to-peak value is small, we can realize the desired signal and the noise separated through frequency mask function.

考虑到冲击试验中的信号都是时变信号，也就是非平稳信号，因此设计了一种基于离散GABOR变换的软件滤波算法对冲击信号进行滤波，其滤波理论依据是：有效信号的Gabor系数在时频域分布比较集中，幅值比较大，噪声的Gabor系数均匀分布于整个时频域，幅值较小，通过构造时频掩模函数来实现有效信号与噪声的分离。

It is found that the position of vortex shedding is different fro m three-row cylinders. The time-mean pressure coefficient along the surfaces o f the cylinders is not changed with the void friction. But the fluctuating press ure coefficient reduces with the increase of void fraction.

试验结果表明：沿圆柱表面周向的旋涡分离点随着流动向深层发展，并向圆柱的背部移动；圆柱表面沿周向的时均压力系数几乎不随含气率的变化而变化；圆柱表面的脉动压力系数随着含气率的增加而减小。

A maneuvering mathematical model for Controllable-Pitch Propeller ships with three degrees of freedom is established according to separate modeling theory. Based on Netherlands Ship Model Basin\'s open-water tests, CPP thrust coefficients and torque coefficients in four-quadrant with different pitch ratio of screw and different types of CPP are obtained by using Akima interpolation. Therefore, CPP thrusts and torques are obtained.

基于船舶操纵性分离建模理论，采用荷兰船模试验水池B系列螺旋桨的敞水试验结果，利用Akima插值获得了不同类型的调距桨在不同螺距比下的四象限推力系数和扭矩系数，求得调距桨的推力和扭矩，建立了调距桨船舶的平面运动数学模型。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。