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Microwave-assisted extraction and soak extraction were selected to obtain extracts from seeds of Datura metel with ethanol+water (1:1) as extractant and its activity against pest insects was determined.

以乙醇＋水(1：1)作为溶剂，采用微波辅助提取、浸泡提取等方法，从白花曼陀罗种子中得到提取液，用此液对春尺蠖等昆虫进行了活性测定。

The results showed that extracts from Datura metel seeds had strong antifeeding effect on Agelastica alni orientalis, Apocheima cinerarius and Vanessa indica. They also had high contact toxicity on Myzus persicae and Chaitophorus populeti.

结果表明，白花曼陀罗种子提取液对杨毛臀萤叶甲东方亚种成虫、春尺蠖和荨麻蛱蝶幼虫具有较强的拒食活性，对蚜虫具有较强的触杀活性。

The HPLC results showed the methanoic extracts of this structure were similar to the wild fruit bodies.

这种结构和野生子实体的甲醇萃取物经HPLC分析已具相似的结果。

Saturated fatty acids and high content steroids were found in the extracts of methanolysis products.

在盐酸甲醇解产物中，主要检测到系列饱和脂肪酸和高含量的甾醇成分。

The samples were extracted with acetone by blending and the extract was partitioned with methenyl chloride. The extracts were cleaned up by a column of silica gel.

样品以丙酮提取，三氯甲烷萃取，硅胶柱净化，液相色谱测定，最小检出量为0 5×10-9g。

Microcrystalline in natural plant extracts, in addition to these functions, balance of plant itself more functional role.

微晶提取于天然植物，除具有以上功能外，更多功能兼顾植物本身作用。

The effect of various solvents and operating parameters through continuous supercritical antisolvent precipitation process on the micronization of peanut skin extracts were investigated in this study.

本研究探讨不同萃取溶剂及连续式超临界反溶剂沉淀法之操作参数对花生膜萃取物微粒化之影响。

This classfier extracts the feature vector of each samples and documents to be classified by using the feature extraction algorithm. Web page was classfied by using the K-Nearest-Neighbor classification algorithm. The experimental results show that this auto classifier based on Web minning can fetch insecurity Web pages, and its classification is effective.

该自动分类器利用特征提取算法实现对每个样本的特征向量提取和待分类文本的特征向量提取，利用基于k个&最近邻&分类算法实现对网页的分类，能够提取出带有不安全信息的网页，分类效果良好。

Objective To study the anti-mutagenicity of water extracts from Momordica charantia.

目的 探讨苦瓜水提取物的抗突变作用。

The water extracts from Momordica charantia can inhibit mutagenesis caused by mutagens in the test.

在本实验条件下，苦瓜水提取物具有明显的抗突变作用。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。