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Of different seasons, and select the best herborization time. Then we compare the contents of general flavone, Diosmin, Palustroside and CHA in 10 samples, draw a conclusion that flavone, Diosmin and Palustroside are the representative index components in Quality standard, steady in different source.

对其质量标准进行了系统的研究,在不同采收期采集了蓬子菜样品,以总黄酮为指标,进行含量测定,确定了最佳采收期;还对不同产地的10个样品中总黄酮、香叶木苷、喇叭茶苷、绿原酸等活性成分进行含量比较,结果蓬子菜中黄酮类成分含量稳定,适于在制定质量标准时作为含量测定的指标成分。

In the air samples ,di(2-ethylhexy) phthalate,di-n-butyl phthalate and dioctyl phthalate were included,while diethyl phthalate,di(2-ethylhexy) phthalate,dipropyl phthalate,butyl benzyl phthalate,dioctyl phtha...

大气环境样品中邻苯二甲酸酯类化合物的预处理主要采用的是索氏提取、溶液提取和填充柱分离;水环境样品中采用的前处理技术较多,但大多数都是萃取技术;底质和生物试样目前用的较多是微波萃取、超声波萃取和索氏提取。

Impregnated by Pd, the Si/Al 0.33 sample with enhanced neighboring region has the highest n- dodecane hydroisomerization conversion and selectivity.

样品担载Pd后对正十二烷的加氢异构化反应表明,交界区扩大的Si/Al = 0.33的样品有最高的加氢异构化得率和选择性。

To study the law of preparing paraffin which be used in the phase-change thermostatic vavle, The samples were made by mixtures of eicosane and octadecane with different proportion. The samples were investigated by DTA analysis and measurement of melting point.

为研究应用在蜡式温阀中的感温石蜡的调配规律,使用十八烷与二十烷以不同比例进行混合,测量每组样品的熔点,再对样品进行DTA差热分析。

Based on the trait of adsorption and desorption of chicken red blood cell with AIV under some conditions, virus enrichment was performed in 48 samples diagnosed by CRBC, and the enrichment products were detected by the multiplex RT-PCR In whih, 30 of 48 were showed to be H5 subtype AIV, completely accorded with the result of same samples tested by embryonated eggs propagation and hemagglutinin inhibition assay.

结合AIV能够吸附鸡红细胞并在一定条件下解离的特点,利用鸡红细胞对48份已确诊样品进行病毒富集,然后用建立的多重RT-PCR方法检测富集产物结果显示48个样品中,30个为H5亚型AIV阳性,与病毒分离结果完全一致。

Different samples' absorbent was determined in the condition of different colorimetric time ,different samples' temperature and different freshness,it prove that the result was relative to different experiment conditions in order to master the key point and ensuer the accuracy of the result in experiment.

啤酒双乙酰的含量是啤酒质量评价中的一项非常重要的指标,通过对不同样品在不同的比色时间、不同的样品温度及新鲜程度条件下测定其吸光度,得出不同实验条件对测定结果的影响,以求在实验中掌握好其关键点,确保测定结果的准确性。

The results showed that the determination coefficients of the models for oil and erucic acid content in different small-sample rapesee...

结果表明:油菜籽各小样品含油量模型的决定系数(R2)从93.93%到96.93%不等,均方差从0.56到0.79不等;油菜籽各小样品芥酸模型的决定系数(R2)从96.91%到98.42%不等,均方差从1.73到2.43不等。

Under scanning electron microscope,barite in these samples occurs as euhedral crystal,co-existing with authigenic quartz and albite with the same idiomorph.Considering the geological setting and c rystal form,it is believed that barite occurred in the study area is compara ble with that found in the Guaymas Basin,Gulf of California,i.e.,with hydrothermal origin.

通过对东太平洋多金属结核中国开辟区表层沉积物和短柱状沉积物的系统观察和分析,首次根据矿物学和地球化学两方面的证据,发现中国开辟区沉积物中热水活动及其产物的存在。X射线衍射分析表明,沉积物样品中普遍含有重晶石,部分样品中含量高达10%以上。

The pharmacologic data and chemical data were analyzed by stepwise regression analysis and 16 characteristic chemical variates were extracted, the quality of Evodia samples were graded in a series of four according to both sets of the pharmacologic data. A quality grading assessment scheme of Evodia samples by chemical ANN pattern recognition was then proposed and the results was satisfying.

依据药理实验结果将样品的质量分为优级品、一级品、合格品、劣品四个等级,对药理数据和化学数据进行逐步回归分析,选取16个有效化学特征变量,用人工神经网络方法建立起可对吴茱萸样品进行质量分级评价和定量预测药效的模型,其结果令人满意。

By applying FASS for on-line sample concentration, the concentration sensitivity for alkaloids was about three-four orders magnitude higher than hydrodynamic injection.

1首次从理论上研究了场强放大样品堆积中水柱长度与样品进样量之间的关系,推导出了相关的数学模型,并用实验进行了验证

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推荐网络例句

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了,但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场,你等着挨绳子吧!

Several theories about reigniting and extinguishing of the arc have been refered.

本文综合考虑了几种电弧重燃和熄灭理论。