查询词典 dopa

Vitamin C can interrupt the process of melanin production could have been generated to prevent further oxidation of DOPA ammonia was reduced to dopa, and can reduce serum levels of copper oxide, affecting the activity of tyrosine plum, thereby interfering with the biosynthesis of melanin, if the want to make the skin and fair complexion, we might eat more foods rich in vitamin C such as tomatoes, oranges, lemons, hawthorn, citrus and so on.

维生素C能中断黑色素生成的过程本来是可以防止的多巴氨进一步氧化减少到多巴，并能降低血清铜氧化，影响酪氨酸梅的活性，从而与黑色素的生物合成，如果干扰是想使皮肤白皙，我们可能会吃更多的食物含有丰富的维生素C，如西红柿，橙子，柠檬，山楂，柑桔等。

Auto-immune type: also known as methyl-dopa-type, hemolytic disease can be medication from 3 months to 4 years later, on behalf of drug: a - methyl-dopa, levodopa, phenytoin, phenacetin, chlorpromazine, indomethacin, etc.

自身免疫型：又称甲基多巴型，溶血发病可在服药3个月至4年后，代表药物有：a--甲基多巴、左旋多巴、苯妥英钠、非那西丁、氯丙嗪、吲哚美辛等

The synthesis of the pentacyclic skeleton of Et-743 and the construction of the five chiral centers thereof.1. The core pentacyclic skeleton of phthalascidin was constructed with L-dopa as the starting material via thirteen steps. First, two basic synthons, the C-1 functionalized tetrahydroisoquinoline compounds 8 and N-protected Z-dopa derivative 9, were prepared from L-dopa. They were coupled via amide bond to form the dipeptide compounds 10, which were the first key intermediates. Then the primary hydroxyl groups were transformed into the corresponding amino aldehydes 11 via Swern oxidation. Followed by the intramolecular Pictet-Spengler cyclization, the pentacyclic compounds 12 were synthesized.

五环骨架的构建及五个正确手性中心的确立：1.1我们以L-多巴为起始原料，经过多步官能团保护和转化合成了基本结构单元8然后和苯丙氨酸衍生物9，通过缩合反应生成酰胺中间体10，经Swern氧化得到醛化合物11，然后再次利用分子内改良的Pictet-Spengler反应一步构建c，d两环，得到五环骨架化合物12，最后，实现了21-位羰基向氰基的转化，得到了C-1位官能化的化合物14，化合物14不但具有和Et-743一致的五环骨架，而且分子中五个手性中心立体构型也与其完全相同：其中，3，位和13，位的手性中心由原料L-多巴带入，而1，位，11，位和21，位手性中心则通过不对称诱导而确立。

Using an anticoagulant it was possible to isolate plasma and intact haemocytes from Helicoverpa armigera larvae. PO and ProPO activities in plasma and haemocyte lysate were assayed when using bovine trypsin as an activator and L-DOPA as a substrate.

用抗凝剂从棉铃虫血淋巴中分离获得了血浆及完整的血细胞，以L-DOPA为底物，牛胰蛋白酶为激活剂，测定了血浆及血细胞裂解液中酚氧化酶及酚氧化酶原的活性。

However, whether L-dopa is definite toxic is still in dispute.

但是临床上L-dopa是否有明确的毒性作用尚有争议。

His research quickly led to an industrial process for the production of the L-DOPA drug which is used in the treatment of Parkinson's disease.

他的研究迅速通向了用于帕金森氏病的L-DOPA药物的生产的工业过程。Ryoji Noyori进一步把这个过程发展到今天的广泛应用形式。

It also helps temper the involuntary arm and leg movements triggered by the Parkinson's medication L-dopa.

开刀也可缓和治疗帕金森氏病所用的药剂L-dopa造成的手脚不自主移动。

Tr It also helps temper the involuntary arm and leg movements triggered by the Parkinson's medication L-dopa.

开刀也可缓和治疗帕金森氏病所用的药剂 L-dopa 造成的手脚不自主移动。

Because of lack of placebo group in the previous studies, it is difficult to conclude that dopamine agonists have the effect of neuroprotection and L-dopa may accelerate the progression of the disease.

在国外既往研究中，由于缺乏安慰剂对照组，尚无法明确定论受体激动剂有神经保护作用，而L-dopa加速了疾病进展。

The optimal pH of soluble and immobilized PPO from Giant cavendishii leaves were 6.8 and 6 using L-DOPA as substrate, and the optimal temperature were 50℃ and 70℃ respectively.

可溶性及固定化北蕉香蕉叶PPO以L-DOPA为基质，最适pH分别为6.8及6，最适温度为50℃和70℃。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐