查询词典 alkaloids

Objective To study the relationship between analgesic effect of total alkaloids in Papaver nudicaule and prostaglandins with opium receptors.

目的 研究野罂粟总生物碱的镇痛作用与前列腺素、阿片受体的关系。

An HPLC-MS-MS method for determination of alkaloids residues in food adulterated with Pericarpium papaveris was described.

采用液相色谱－电喷雾串联四极杆质谱法定量检测掺罂粟壳食物中生物碱的残留。

Plant alkaloids, which constitute one of thelargest group of natural products, provide many pharmacologically active compounds.

生物碱组成了植物最大的一类天然次生代谢产物，提供了许多具有药用活性的化合物。

The author adds up the pharmic data of 2000 aconitine alkaloids poisoning cases in the past ten years' literature.

作者统计了近十年文献中2000例乌头类生物碱中毒病例的药学部分资料，探讨乌头类生物碱中毒的药学原因。

Orthogonal test was adopted to optimize extraction process of alkaloids from plumula nelumbinis.

以紫外分光光度法测定生物碱的含量，采用正交实验法对莲子心的提取工艺进行优选。

ConclusionThe optimum extraction process can extract the alkaloids from plumula nelumbinis and the extraction technology is simple and reasonable.

最佳提取工艺可以有效地提取莲子心中的生物碱，工艺操作简单、合理。转载于中国论文联盟 http：//www.lwlm.com

Results By using two-phase solvent systems composed of petroleum ether-ethylacetate-methanol-water (22:25:23:17) at the flow rate of 2.0 mL/min, with rotating speed of 800 r/min, and at temperature of 25℃, the yield of d1-tetrahydropalmatine and of protopine purified from the total alkaloids being 16.9% and 14.7%, with purity of 99.3% and 98.8% respectively can be reached.

结果 石油醚－乙酸乙酯－甲醇－水(22：25：23：17)为溶剂体系，流速为2.0 mL/min，仪器转速800 r/min，温度25℃，从延胡索总碱中可一步纯化得到原阿片碱和延胡索乙素，得率分别为16.9%和14.7%，纯度分别为99.3%和98.8%。

Methods:Alpha-glucosidase activities were examined with or without Folium Mori alkaloids extract,Ramulus Mori extract and acarbosein vitro, and the IC_(50)were calculated.

本文以拜糖平为阳性对照，采用α-葡萄糖苷酶体外抑制作用实验，比较了桑叶生物碱浸膏、市售的桑枝提取物以及拜糖平对α-葡萄糖苷酶的抑制作用能力差异。

Objective To study the technology for purification of total alkaloids from Rhizoma Coptidis by maeroreticular adsorbent resin.

目的研究大孔吸附树脂纯化黄连总生物碱的工艺。

Quinazolinone alkaloids are the active components contained in the plants of Rutaceae. Many investigators have indicated that quinazolinones have anti-tumor activity. However, the reasons why the molecular mechanisms of quinazolinones produced their biological effects remain unknown.

喹唑啉酮类生物碱是芸香科植物中所含的活性成分，虽然已有许多研究者证实喹唑啉酮类缘物具有抗癌活性，然而，其真正的抗癌作用机制仍然未被厘清。2-(Naphthalene-1-yl)-6-pyrrolidinyl-4-quinazolinone（HL66）是合成的喹唑啉酮类缘物。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。