查询词典 isolated substance

The effects of various active fractions isolated from oolong tea on norepinephrine-induced lipolysis were examined in isolated fat cells.

乌龙茶的水提取物能够促进去甲肾上腺素诱导的脂肪分解，其活性成分之一经鉴定是咖啡因。

The constituents were extracted by some solvents. 18 constituents were isolated from Chloroform fraction by different chromatography. 15 constituents were identified by IR ,MS and NMR as follows: 3-sitosterol, P-sitosterylpalm itate,succinate acids, 1, 4-benzenediol, 1, 2-benzenediol, p-hydroxybenzaldehyde, syringaresinol, oleanolic acid, usolic acid, ethyl caffeate , Rosmarinic acid ethylster and etc. In such constituents ,nine compounds were isolated for first time from Origanum vulgare L..

牛至药材经水煮醇沉法所得浸膏，利用溶剂法和色谱法从中分离得到18个单体成分，通过IR、MS、NMR等波谱技术鉴定了其中的15个化合物，分别为β-谷甾醇(1)、β-胡萝卜苷(2)、琥珀酸(3)、对-二苯酚(4)、邻-二苯酚(5)、对羟基苯甲醛(6)、1.2-二羟基-4-异丙基-5-甲基苯(7)、新木脂素(8)、丁香脂素(9)、齐墩果酸(10)、乌苏酸(11)、4-二十六烯(12)、正二十六醇(13)、咖啡酸乙酯(14)、迷迭香酸乙酯(15)等，其中化合物3、4、5、6、7、8、9、14、15等9种化合物均为首次从该属植物中分离得到。

METHODS Isolated rat lungs were used as the oxygenator. Venous blood from experimental rats was oxygenated in isolated lungs and then was perfused into the aorta of experimental rats by pump.

CPB中的肺损伤主要由体外循环中血液与非生理性管道界面接触引发的全身炎症反应以及肺的缺血再灌注损伤造成［1］。

According to the characteristics that Trypanosome can produce different variations, 5 New Zealand rabbits were infected in sequence with a monoclonal strain of Trypanosome evansi isolated from Yunnan buffalo. 50 monoclonal strains were isolated and showed by indirect immune fluorescent test that the first parasitemia peak of variation in following 4 rabbits exist in 9 predominant variations of first rabbit. The 50 variations subordinate to 20 antigen types.

根据锥虫在兔体内可产生不同变异体的特性，将伊氏锥虫云南水牛单克隆株顺序感染五只新西兰大白兔，分离到 50 个单克隆群体，经间接免疫荧光实验证明：后四只兔子出现第一次虫血症高峰的变异体，均包含在第一只兔体内分离得到的 9个优势变异体之内；这 50 个变异体分属于 20 个抗原型，即共分离到 20 个优势变异体。

OBJECTIVE:To study the pharmacological effects of saponin H,a new saponin isolated from Polygala tenuifolia Willd,on isolated smooth muscle and herat.

目的：研究一种新的远志皂苷H对平滑肌和心肌的药理作用及其机制。

From the perfusion experiments with isolated rabbit heart and vessels were obtained the follow- ing results:(1)Potassium antimony tartrate produced depression of the isolated rabbit heart,and this depressant action became more marked when the pH of the solution was raised from the original value of 5.4 to that of 7.2;(2)At the same pH levels,the cardiac action of the potassium salt was slightly stronger than that of the corresponding sodium salt;(3)The slight vase-dilator effect of potass- ium anti...

从离体器官的灌注实验得到下列结果：(1)酒石酸锑钾对离体兎心有抑制作用，将其pH 从5.4调整到7.2时，作用亦随以增加。(2)在相同 pH 时，酒石酸锑钾的心臓抑制作用较酒石酸锑钠略强。(3)酒石酸锑钾对离体兎耳血管的轻微扩张作用，系由于该药溶液的微酸性反应，当将药液 pH 调整至7后即无作用。(4)对于离体兎肺血管则不问 pH 为4.8或7，均产生轻微的血管收缩作用。

Compounds 4 and 5 are isolated from Potentilla for the first time; compouds 17 are isolated from this plant for the first time.

化合物4、5为首次从委陵菜属植物中分离得到，化合物1~7均为首次从多茎委陵菜中分离得到。

The sample was isolated by sephadex G-25 gel filtration column after concentration. Then bioactivity was assayed by Candida albicans. The chemical components were isolated and identified by GC-MS. GC determined the relative percentage content of the extract, nine kinds of components were separated, identified and accounted for about 82.12%, the major compound was propenyl methyl disulfide.

浓缩后的样品通过Sephadex G-25凝胶柱分离提纯其中的有效成分，以白色念球菌进行生物活性测定，并用气相色谱-质谱法对其化学成分进行分离鉴定，GC法测定各种化合物的相对百分含量，共鉴定了9种成分，约占总提取物的82.12％，其中，主要物质是甲基丙烯基二硫化物。

Lamellarins are a group of marine active pyrrole alkaloids isolated from prosobranch mollusks. So far, over 40 lamellarins have been isolated and identified.

片螺素是一类从前腮亚纲软体动物中分离的具有较强生物活性的海洋吡咯生物碱，迄今已发现40余种。

The article considers to build harmonious living quarter in the light of different period the strategy of human relation, in isolated period develop an activity for the unit with the dormitory, shorten isolated period; is in absorb period, the development; that leads informal group correctly is being formed period, pay attention to the paradigmatic effect that produces core figure, the development of stimulative undergraduate socialization.

本文针对不同的时期探究建立和谐宿舍人际关系的策略，在孤立期以宿舍为单位开展活动，缩短孤立期；在同化期，正确引导非正式群体的发展；在形成期，注重发挥核心人物的模范功能，促进大学生社会化的发展。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？