查询词典 potent

There are four kind of isoforms of endothelin in human and other mammals named ET-1, ET-2, ET-3 and ET-β, which are slightly different in construction and pharmacological effect. In human beings, ET-1 is the dominative subtypes. ET-1 remains in blood at a low level about 5ng per liter on physical state. It is synthesized, stored, released and metabolized locally. The half-life of ET-1 is about 1 hour. ET-1 is the most potent vasoconstrictive factor till now, and it is more functional in vein than in artery. In vascular bed, there are two kind of ET receptors. Type A mainly located in smooth muscle cells, whereas type B in endothelial cells. The latter can stimulate intimal hyperplasia via a parasecretion way and activate some oncogenes such as c-fos and c-myc and then enhance their expression. These alterations result in constriction of blood vessels, thus the SMC steps into proliferate state from silent state.

人及哺乳动物体内有四种结构及药理学性质略有差异的异物体，分别为ET-1、ET-2、ET-3、ET-β，而在人主要是ET-1，在生理条件下，ET-1在血浆中含量较低，约为5ng〓，故ET-1不是一个循环激素，而是局部合成释放，局部起作用的活性物质，半衰期约1小时，ET-1是目前已知的最强的血管收缩剂，对静脉的作用比动脉强，在血管床，ET受体有A、B两型，A型主要分布在平滑肌细胞，B型主要分布在内皮细胞，它可以通过旁分泌途径刺激内膜增生，具有有丝分裂原效应，可以激活某些癌基因如C-fos、C-myc使其表达增强引起血管收缩，使静止期SMC进入增殖期，还可以通过信号传导途径，与bFGF、GTF-β、PDGF等生长因子协同作用，起共有丝分裂原作用。

Potent scavenger of superoxide and peroxyl radicals.

有效的超氧和过氧自由基清除剂。

The pharmacodynamical study of four water soluble sections demonstrated potent anti-HIV.

水溶性部分的药效结果表明，四个样品在体外均显示抗HIV作用，抑制参数都大于5。

A device ( 12 ) and method are provided for percutaneous transdermal delivery of a potent pharmacologically active agent.

提供一种装置(12)和方法，用于高效药物活性剂的经皮肤递送。

It is loaded with potent phytochemical antioxidants, and in far greater quantities than in green tea.

它装有烈性植物抗氧化剂、数量远远高于绿茶。

The NIH-sponsored study, presented April 29, 2007 at the Experimental Biology 2007 in Washington, D.C., looks at a potent anti-inflammatory phytochemical derived from green tea.

该研究所赞助的研究，提交2007年4月29日举行的实验生物学2007年在华盛顿，看一种强力抗发炎植物从绿茶。

Pokeweed antiviral protein, a 29-kD protein isolated from Phytolacca americana, inhibits translation by catalytically removing a specific adenine residue from the large rRNA of the 60s subunit of eukaryotic ribosomes. In addition to its ribosome-inactivating ability, PAP has potent antiviral activity against many plants and animal viruses.

美洲商陆抗病毒蛋白(pokeweed antiviral proteins，PAPs)，是在美洲商陆的不同组织或不同生长阶段生成的一类具功能的单链核糖体失活蛋白(ribosome-inactivating proteins，RIP)，是天然的广谱抗病毒生物活性物资，能抗多种植物和动物病毒。

Within the 10(-8) to 10(-3) M range, topical verapamil, compared with nitroglycerin, proved to be a more potent cerebral vasodilator and had a more robust vasodilator effect on the distal small pial arteries.

在10(-8) to 10(-3) M 范围内，与硝酸甘油相比较，局部应用维拉帕米证明维拉帕米是有效的脑血管扩张剂以及作用脑远端软膜小动脉更强有力的血管扩张剂。

Several polynuclear aromatic hydrocarbons, many found in cigarette smoke, are potent carcinogens.

答：在香烟中发现多种多环芳香化合物，它们是致癌的物质。

Even without this sort of measure, Portio predicts that global mobile penetration will reach 75% by 2011. A device that was a yuppie toy not so long ago has now become a potent force for economic development in the world's poorest countries.

Portio预计尽管没有上述措施，到2011年全球手机普及率仍将会达到75％，在不远的过去还是雅皮士们的玩具的手机已经成为世界上最贫穷的国家的经济发展的一个潜在动力。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。