提取

The cinnamaldehyde as a main component in the essential oil was determined. The effects of type of solvent, temperature, extraction time and ratio of solid to solvent were examined and optimized.

考察了NPSMAE提取溶剂的种类、提取温度、提取时间及固液比等对测定的影响，同时将NPSMAE与超声波辅助提取及水蒸气蒸馏等方法进行了比较。

In this paper, the distribution of clinopyroxene, orthopyroxene, olivine, plagioclase and ilmenite on lunar surface was mapped based on Hapke radioactive transfer model and linear unmixing of spectra using Clementine UV/VIS/NIR data. The result is compared with the results obtained by previous researchers and Apollo sample analysis, and the problems existing in mineral abundance mapping are analyzed preliminarily.

基于Hapke模型与光谱线性分解的矿物提取方法，利用Clementine UV/VIS/NIR数据提取月表单斜辉石、斜方辉石、橄榄石、斜长石及钛铁矿等5类主要矿物的体积百分含量分布，并基于阿波罗月岩矿物分析数据对提取结果进行评价，对方法和提取结果中存在的问题进行分析，提出了进一步改进的措施。

Using large sample DNA of capacity technology, the maize high lysine content of SSR mark analyse technological platform has been established in this paper. The main results are as follows: the five comparing research methods of drawing maize DNA mark have shown that the method of iso- sulphur cyanic acid guanidine drawing maize genome DNA has the superiority of using less medicine, operating sequence more simple , faster, and costs lower , steady and reliable quality of DNA, etc..Utilizing this method , one person can draw 300-400 DNA samples each workday.lt indicates that the method can be used in SSR marker of maize,.

本文从大样本容量的DNA快速提取技术入手，初步建立了玉米高赖氨酸含量的SSR分子标记分析技术平台，获得的主要结果如下：对五种玉米DNA提取方法的比较研究认为，异硫氰酸胍法提取玉米基因组DNA，具有使用药品少、操作步骤简单、快速、成本低、DNA质量稳定可靠等优点，利用该方法，每人每个工作日可以提取300～400个DNA样品，可以在玉米SSR标记分析中应用。

The technology of extracting polysaccharide in Enteromorpha interspinlis with cellulosase was studied.

实验研究了纤维素酶法提取浒苔多糖的工艺条件，通过单因素试验和正交实验，确定了最适提取工艺条件为：提取时间为 2 。5h ，温度为 4 0℃，pH值为 5 。0 ，加酶量为 8%，浒苔多糖的提取率为

The process of feature extraction is to transform the eradiate noise signal to different feature space and extract the feature vectors that reflect the category of the input sample. The extracted features are the input modes to the classifier. Through the inspecting, the author selected three methods of eradiate noise's feature extraction.

本文作者经过考察，采用了三种前期研究中较为有效的水下目标特征提取方法——基于功率谱估计的线谱特征提取方法、基于小波分析的不同频段内能量特征提取方法和基于水声信号分维特性的特征提取方法。

Results Temperature of extractiont and concentration of ethanal had significant effect on the yield of antidepressive substances from Hypericum perforatum L.

结果影响从贯叶连翘中提取抗抑郁成分的主要因素是乙醇浓度与提取温度，贯叶连翘的最佳提取工艺为A4B2C2D1，即20倍量的70％乙醇，80℃回流提取2h。

The optimum extraction conditions for gingerol were identified as the follows: 70% ethanolas solvent, ratio of material to liquid as 1:12.5, synergistic extraction time 60s with ultrasound wave and microwave for one time.

最佳工艺条件：70%乙醇为溶剂；料液比1：12.5；超声波250 W微波协同处理60 s，姜辣素的提取率达到1.843%，处理后物料经70℃热回流提取2 h，姜辣素的提取率可达到3.262%，是直接热回流提取2 h的1.5倍。

Confirm the optimum extraction technics of polyphenol of Humulus lupulus by single factor and orthogonal test: impregnant's concentration 70%, the ratio of materiel and impregnant 1:25, circumfluence temperature 45℃, time 1h and extraction quantity achieve 47.29mg/g dry Humulus lupulus at this condition.

通过单因素和正交试验确定了酒花多酚的最佳提取工艺：浸提剂为70%丙酮，料液比1：25，回流提取温度45℃，提取时间为1h，在此条件下多酚的提取量达到47.29mg/g干酒花。

To isolate Jasminum flavonoids, it took an investigation to the effect of various conditions in extraction. The result was with EtOH concentration 70%, temperature 75℃, extraction time 4h and the ratio of solution to liquid 1:15.The studies implemented macroporous resin to enrich Jasminum flavonoids.

在茉莉花干黄酮的提取工艺研究中，以乙醇水溶液为溶剂，考察了不同乙醇浓度浸提液、不同浸提时间，不同浸提温度和不同料液比对茉莉黄酮提取效果的影响，通过正交实验确定了茉莉黄酮的最佳提取工艺为乙醇浓度70％，温度75℃，提取时间为4h，固液比为1：15。

Leaves. Result: Extraction temperature had effect on total flavonoids yield, and ethanol concentration had more obvious effect than extraction temperature. The more natural storage time, the less total flavonoids content, and the average descent rate was 24.74% per year. The flavonoids content from Lithocarpus polystachyus Rehd. gathered between August and October was the highest. The total flavonoids content was higher in the new leaves of Lithocarpus polystachyus Rehd.

结果：乙醇体积分数对总黄酮提取量有显著影响，提取温度对总黄酮提取量有影响；多穗柯自然存放时间越长，总黄酮含量越低，平均每年下降24.74%；不同季节采摘的多穗柯其总黄酮含量以8~10月最高；经对怀化多穗柯嫩叶和老叶中总黄酮的提取测定表明，多穗柯中嫩叶总黄酮含量最高，二年生最低。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失