查询词典 petroleum ether

ConclusionIt is the first time that the petroleum ether extract and ethyl acetate extract of Nervilia foadii Schltr. are proved to be the effective anticancer fractions in vitro.

结论首次确定了青天葵的石油醚和醋酸乙酯部分是体外抗肿瘤作用的有效部位。

The main aim of this paper is research the technology that combine enzyme treatment and petroleum ether to extract the Jatropha curcas L.seed.

笔者对酶处理与石油醚浸出相结合提取麻疯树籽油脂工艺的研究。

Methods Silica gel column chromatography and PTLC were used to separate and purify the compounds from the petroleum ether soluble fraction of ethanol extract.

方法用硅胶柱色谱和制备薄层等方法从乙醇提取物的石油醚萃取部位分离化合物，通过波谱方法鉴定其结构。

The analgesic active substances of Meconopsis quintupcinervia Regel contain in ethanol extract mainly, then in petroleum ether extract.

五脉绿绒蒿的镇痛活性物质主要存在于乙醇提取物中，其次是石油醚提取物。

Among the five extracts, petroleum ether extract had the strongest contact toxicity and the adjusted death rates were 66.65% and 92.21% 24 h and 48 h after treatment with the concentration of 100 mgmL^(-1) and the LD50 were 76.07 mgmL^(-1)、14.94 mgmL^(-1) respectively.

其中，以石油醚提取物的触杀作用最强，处理后24、48h的校正死亡率分别为66.65%和92.21%，LD50分别为76.07、14.94mgmL^(-1)。

This pigment was extracted with 1%NaOH, then was extracted for 3 times with petroleum ether and ethyl acetate.

结果表明，板栗壳色素易溶于碱性水溶液，不溶或难溶于非极性溶剂。

The effects of different entrainers(methanol,acetone,ethyl acetate,petroleum ether and ethanol of different concentrations) on the diosgenin extraction rate were studied.

探讨了乙醇、甲醇、丙酮、乙酸乙酯、石油醚作为夹带剂以及在无夹带剂的条件下，对薯蓣皂素收率的影响。

Methods The cultivated Cs fungus HK-1 and natural Cs were extracted with petroleum ether, ethyl acetate, ethanol, and water.

方法人工虫草菌HK-1与天然虫草分别用石油醚、醋酸乙酯、乙醇和水提取。

Proceeding from the considerations of environmental protection,we choose petroleum ether other than Freon.

从保护环境的角度出发，应放弃氟利昂，选择石油醚。

By using this new method the optimum extraction condition was obtained as follows extraction time 19.39 hours impregnant capacity 18.90mL and percent of petroleum ether 46.26%.

结果表明，脂质提取的优化工艺条件为2.00g海藻粉、提取时间19.39h、溶剂的量18.90mL石油醚百分含量46.26%。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。