提取

A quick DNA extraction technique which was fitting for maize variety identification and establishing DNA fingerprinting pool was explored ,and the technique was well applied in the following tissues for DNA extraction : embryo, endosperm; radicel, coleoptile , hypocotyl from germinated 1～3 days material .

本实验探索了适用于玉米品种鉴定及DNA指纹库构建的玉米品种DNA快速煮沸法，用快速煮沸法提取了玉米种子胚、胚乳；水培初生根、侧根；种子出苗后的初生根、侧根、胚芽鞘、胚轴、叶片等组织DNA，结果表明，种子胚、胚乳组织；水培2～4d水培初生根、侧根组织；出苗1～5d的胚芽鞘、胚轴组织用快速煮沸法提取DNA效果较好。

Objective To analyze the components of organic acids in the Radix Ranunculi Ternati from different methods.

目的 分析不同提取法提取的猫爪草有机酸部位的成分。

Methods: Erucic acid from rape oil was extracted with cooling crystallization, and compared with lead salt method.

采用冷结晶法提取芥酸，并与铅盐法提取芥酸作了比较。

A fast extraction method of beer bottle rasied character is introduced in this paper. It is the technique combination of moving target tracking based on dynamic image sequence with edge detection algorithm for speeding up the processing of character extraction to meet the demand of on-line detection in industry. First dynamic image sequence is obtained with an area CCD camera, and the background frames are detected based on the coherence between the background and character image from the video and inevitability of background frames emergence.

运用基于动态图像序列的运动目标跟踪技术，结合图像边缘提取理论中的检测算子模板，提出了一种快速提取啤酒瓶凸性字符的方法：首先采用单个面阵CCD得到啤酒瓶字符的运动图像序列，然后利用背景在运动图像序列中的镜头突变性和出现的必然性，检测视频流中的背景帧，最后采用基于边缘检测的背景配准方法，得到运动图像和校正背景图像的差分图像，恢复出真正的运动物体。

It is proposed that the best extration temperature and reagent was 40 ℃ and ethanol 95%, respectively.

因此建议，白桦愈伤组织中三萜提取的最佳温度为40℃，提取试剂为95%乙醇。

It is introduced in the feature extraction of the vibration signal induced from reciprocating machinery valve,and t.

该方法用于往复机械气阀的振动信号特征提取，有效地提取了气阀的故障特征信号。

In this method, wavelet and fractal are used to pick up the structure feature and statistical feature, and these features are combined and used for recognizer as input data.

对手写汉字分别采用小波和分形的方法提取其结构特征和统计特征，并将提取的结构特征和统计特征组合后作为识别器的输入进行识别。

So a novel content-based face image retrieval scheme is created based on this content feature-principle independent content feature. In this scheme, PICF based on higher order statistics is firstly extracted in the reduced space for effective representation of face images.

该方案首先在降维空间提取出基于高阶统计特性的主独立内容特征，应用提取的主独立内容特征进行有效的人脸图像描述。

The extracting process of pot groups dynamic refluence is a scientific method for traditional Chinese medicine,suitable for being used in industrial manufacturing.

罐组式动态逆流提取工艺是一种比较科学的中药提取方法，适合在工业化生产中应用。

ConclusionThe extracting process of pot group dynamic refluence extraction can get more effective components, save energy and shorten the time of manufacturing.

结论蛹虫草多糖的罐组式动态逆流提取工艺节省能源，缩短生产时间，提取率较高。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。