提取

The β-glucan was extractted from naked oat bran , the effect of different pretreatment method, enzymatic removal of starch, isoelectric precipitation of protein residue, and precipitation of water-soluble polysaccharides with ethanol solution on the yield and purity of β-glucan were systematic studied.

以莜麦麸为原料提取β-葡聚糖，系统研究了原料处理、去除淀粉、蛋白质及醇析等关键步骤对β-葡聚糖得率和纯度的影响，通过单因素试验及正交试验优化了β-葡聚糖提取工艺条件。

Forty Wistar neonate rats of 3 days old were subjected to neurotomy of right sciatic nerve, and then randomly divided into 4 groups with 10 animals in each group.

出生3d Wistar乳鼠40只，行右侧坐骨神经切断术，按随机数字表法分为肢芽提取液非运动组、肢芽提取液运动组、生理盐水非运动组、生理盐水运动组，每组10只。

The capability of scavenging sodium nitrite and disconnecting nitrosamine synthesis with hawthorn extracts by microwave method were determined by spectrophotometry under simulated human gastric juice,and was compared with vitamin C.

通过微波法提取山楂的活性成分，在模拟人体胃液条件下，采用分光光度法测定了不同浓度的山楂提取液对亚硝酸钠的清除能力和对亚硝胺合成的阻断能力，并与Vc进行了比较。

The study in this paper focuses on extracting the feature curves of the contour from radiation image containing a single object and using a nonparametric method further to extract and optimize the dominant points.

文章主要研究了从单一物体的辐射图像中提取轮廓的特征曲线，进一步使用非参数化的方法提取控制点并进行优化。

Direct difference is sensitive to noisy data, so a threshold limitation is given, which can not only filter the result from noisy data but also pick edge points up according men's desire. On the other hand, artificial intelligence is used for segmentation in reverse engineering. Because the essence of segmentation is clustering similar characteristics and self-organizing feature mapping is one function of neural network, SOFM network is used for segmentation in the thesis, coordinates and normal of data points is took as the characteristics vector.

第二种方法，基于双向角度微分的边点提取法，针对三维正交模型采用基于截面线的方式组织数据，此方法比基于曲率半径方法更简洁，不用进行曲面拟合，大大提高了计算速度；计算过程中由数据点的直接差分逼近微分，但直接差分对数据误差敏感，为此，本文提出了阈值过滤的方法，一方面过滤了数据误差在计算结果中引起的噪音，另一方面可以按照设计意图控制边点的提取；来决定是否提取光滑交接的边点。

Also how to calculate normal vector of the original surface is introduced.

在第三章，介绍了特征的准确定义，并介绍了特征提取算法，并在特征提取的算法中，介绍了一种计算网格曲面顶点法向量的比较好的方法。

First, the proposed scheme uses contourlet transform to extract multidirectional and multiscale texture information, and then obtains the feature points invariant to the affine transformation from the low and middle directional subbands by Harris-Affine detector. Second, the feature regions are adaptively computed by the feature scale of the local structure and normalized by U transform. The watermarking is embedded adaptively in those characteristic regions which are normalized. Finally, by vector quantization, several copies of the watermark are embedded into the no overlapped local feature regions in different directional subbands.

首先，用Contourlet变换提取出多尺度、多方向的纹理信息；再用Harris-Affine检测算子从变换域的中、低频方向子带中提取出仿射不变特征点，结合自适应局部结构的特征尺度确定特征区域，并用U变换对其归一化处理，水印就自适应地嵌入到归一化后的区域中；水印嵌入采纳矢量量化的策略，将水印信息重复嵌入到不同方向子带、多个不相交的局部仿射不变特征区域。

Best extraction craft of Cinnamon oleoresin by microwave extraction technology was studied through single factor and orthogonal experiment.

应用微波提取技术，通过单因素和正交试验，选择提取肉桂油树脂的最佳工艺。

With the yield of volatile oil as indexes, and water volume, soaking time and extracting time as factors, the optimal extracting condition for volatile oil from Radix Angelicae Sinensis, Olibanum, Olibanum, Radix Curcumae, Rhizoma Cyperi and Radix Bupleuri was investigated.

以加水量、浸泡时间、提取时间作为考察因素，以挥发油收率为考察指标，优选当归、乳香、没药、郁金、香附、柴胡中的挥发油提取工艺。

Compared with the traditional Sobel and Log operator, the method has a better performance and converges quickly.

与传统边缘提取方法Sobel和Log相比较，该方法边缘提取效果良好，收敛迅速。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。