查询词典 extraction

Methods According to the operation step of instrument hook, samples of 6 kinds of moon cake were tested with three different extraction conditions, and the results were compared with the result of national standard method. With the extraction condition of 105°C/petroleum ether, there was no significant.

选取6种不同种类月饼样品，在3种不同的提取条件下，按照说明书的操作步骤进行测定，然后将3种条件下的实验结果与国标法结果进行比较。

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。

The effects of extraction conditions on yield, purity of tea polysaccharide and cost of extraction were discussed.

本文的实验结果为改善茶多糖的提取方法提供了实验基础。

The optimum conditions for extraction was proved practicable by condition filtration and orthogonal design with supersonic wave method .The results showed that the optimum conditions for extraction to ultrasonic method is : methanol (φ=40,20ml),and 15℃ for 30 min ,this paper has determined nicotine contents that is 23.50mg/g at absorption peak (λ=262nm) by HPLC with an eluent consisting of methanol –potass Phosphate alleciate (pH=3) with the recovery and coefficient of variation are 101.52% and 0.91%.

通过超声波提取方法进行条件筛选和正交化实验，确定了烟草中尼古丁的最佳提取条件，结果表明，超声波最佳条件是：甲醇浓度40%，固液比1：20，提取时间30 分钟，超声温度15℃，用高效液相色谱方法在波长262nm 处测定尼古丁的含量，流动相组成为甲醇：磷酸二氢钾缓冲溶液=10：90，测得烟草中尼古丁的含量为23.50 mg/g，平均回收率为101.52%，相对偏差为0.91%。

The effect of ultrasound on the degradation of pyrethrins and the velocity of extraction are studied through the supercritical carbon dioxide extraction of pyrethrins from pyrethrum.

本文以除虫菊花中的除虫菊酯萃取为对象，研究用超临界CO2对其萃取时，施加超声场对萃取物降解及萃取速率的影响。

With the increase of microwave extraction time,extraction yields of rutin,epicatechin,quercitrin and quercetin were firstly increased and then decreased.

在提取压力超过400kPa时，芦丁开始失去一个芸香糖转化为槲皮素；随着微波照射时间的延长，芦丁、表儿茶素和槲皮素提取产率先增加，而后下降。

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。

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。

MethodsEffects of extraction time , temperature and ratio of dosage liquor and number of pots on generation of polysaccharide was studied in single factor test, orthogonal design. ResultsThe optimal extraction conditions of polysaccharide was 150 minutes, 90℃ and 1∶50 of the ratio of dosage liquor,5 pots in the pot groups dynamic refluence.

方法通过单罐单因素实验，正交设计分析提取时间、提取温度和料液比对蛹虫草多糖提取的影响；设计罐组式动态逆流提取装置，重点探讨料液比和提取级数对多糖提取得率的影响。

Methods Compared with the ultrasonic extraction and the refluent extraction experiment,colorimetric analysis was used to measure the content of active ingredients.

方法比较超声提取和回流提取实验，用比色法测定有效成分；采用回流提取正交实验，并对实验数据经不同的计算和分析比较优选螃蟹脚的提取工艺条件。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。