查询词典 constituents

Methods Column chromatography over normal phase silica gel, reversed phase silica gel, Sephadex LH-20, and recrystallization techniques were used to isolate and purify constituents from Halenia elliptica.

利用正相硅胶柱色谱、Sephadex LH-20柱色谱、反相高效液相色谱和重结晶等手段进行分离

Objective: To study the chemical constituents from the root of Hedysarum multijugum .

中文摘要：目的：研究红花岩黄芪的皂苷成分。

Aim To study the chemical constituents of Hedysarum gmelinii.

目的对华北岩黄芪Hedysarum gmelinii的化学成分进行研究。

Objective: To study the chemical constituents of the roots of Hedysarum multijugum Maxim.

目的：研究红花岩黄芪Hedysarum multijugum Maxim。的化学成分。

hexadecanoic acid,oleic acid and linoleic acid were the major constituents.

结论萝卜秦艽块根中挥发油的主要成分为烷烃类和有机酸及其酯类化合物，其中十六烷酸、油酸、亚油酸等成分含量较高。

The monosaccharide compositions were identified as mannose and rhamnose; the lipid compositions included decanoic acid, lauric acid, hexadecanoic acid and stearic acid, and the protein constituents were composed of sixteen amino acids.

进一步研究证实，该乳化剂糖类的单糖组成为甘露糖和鼠李糖；脂类由十碳、十二碳、十六碳及十八碳脂肪酸组成；蛋白质由16种氨基酸构成。

The chemical constituents of extracts of Tamarindus indica L were determined by GC-MS. The relative contents of constitutes were determined by area normalizing method. 48 compounds were identified, amounting to total mass fraction 98.5%. The main compounds were 5-methyl-2(3H)-furanone, diethyl succinate, furfural, hexadecanoic acid, linolenic acid, 5-methylfurfural, oleic acid, linoleic acid, etc.

并利用气相色谱仪-质谱仪对罗望子萃取物的化学组成进行了分析鉴定，并用面积归一化法测定了各种成分的质量分数，共鉴定了48种成分，占总质量分数为98.35%，其中主要成分为：5-甲基-2(3H)-呋喃酮、丁二酸二乙酯、糠醛、十六酸、亚麻酸、5-甲基糠醛、油酸、亚油酸等。

Objective To study the chemical constituents from the 60% ethanol extract of the roots of Campylotropis hirtella Schindl.

摘要摘要：目的研究毛杭子梢体积分数为60%的乙醇提取物的化学成分，寻找新的抗前列腺增生的活性化合物。

Objective To study the chemical constituents of the fruiting bodies of Hydnum repandum.

目的 研究担子菌黄卷缘齿菌Hydnum repandum的化学成分。

Active constituents such as hypericin and hyperforin play important roles in its pharmacological activity.

等活性成分如金丝桃素和hyperforin中发挥重要的作用及其药理活性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。