提取

Perilla seed oil was extracted from the perilla seed by using ultrasonic wave assisted extraction technology. The antioxidantion effects of different antioxidants, such as TBHQ, BHT, and VE were compared with each other by using the Rancimat method.

以紫苏子为原料，利用超声波辅助提取技术提取苏子油；用Rancimat法比较TBHQ、BHT和VE等不同抗氧化剂单独作用及复配时对苏子油的抗氧化作用。

Compared with the traditional numerical method,the periodic orbit extracted by the analytic approach is more accurate,requires smaller memory size and is more applicable in real time systems;Furthermore,it is more suitable for stable analysis and control of the systems.

与传统的数值提取法相比，所提出的解析法具有提取的周期轨道精确度高、周期轨道信息的存储量小、便于实时应用、易于进行稳定性分析和控制等优点。

Ten secondary metabolites in phloem of different strains of poplars were extracted by different chemical methods and their contents were determined.

摘要通过不同化学方法提取并分析了不同品系杨树韧皮部10种次生代谢产物的含量及含量差别，研究了不同制样方法对单宁、酚类及酚酸产物含量提取结果的影响。

The conditions of manufacture of phytin by ion-exchange resins are also studied,its extract rato is 88 %,but the content of suger and protein is lower,so it is more suitable for inositol preparing.

酸浸取碱中和菲丁提取率达90％～93％，离子交换法菲丁提取率稍低，为88％，但菲丁中糖类、蛋白质含量低，利于进一步制备肌醇。

In order to extract clear FECG,a new method called PICA was proposed based on Independent Component Analysis and Particle Swarm Optimizer.

为了清晰地提取出胎儿心电信号，提出一种基于独立分量分析与微粒群算法的胎儿心电提取方法？？

Experiments results indicated that more exact FECG could be obtained by PICA method with high stability and strong robustness than by other methods.

PICA算法。研究结果表明，与其他一些传统的胎儿心电提取方法相比，这种方法能够提取出更加准确的胎儿心电信号，具有较强的稳定性和鲁棒性，对基于胎儿心电的生理学、病理学研究有一定意义。

Digital authentication image for the object image extraction method of character analysis and research, achieve code characters in the picture extraction and recognition.

详细说明：以数字验证图片为对象进行图像的分析与字符提取的方法研究，实现对验证码图片中字符的提取与识别。

Result］ The optimum technology for extracting the volatile oil from the pine needle of P.

结果］马尾松松针挥发油的最佳提取工艺为：液料比9∶1，提取时间3 h，浸泡时间7 h。

Microwave vacuum distillation and ethanol as solvent are used to extract pepper oil and piperine from black pepper in this research.

采用微波减压蒸馏及乙醇提取法对胡椒油和胡椒碱的提取进行了研究。

In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。