海因

I quickly went from there to reading the Heinlein juveniles, though, which made an even stronger impression on me–it was probably the Heinlein juveniles that first set the hook in, which seemed to satisfy whatever hunger I was trying to assuage with these other books better than they did.

很快我便从安德烈·诺顿进而阅读海因莱因的"青少年从书"，结果是，后者给我带来了更加强烈的震撼——可能是因为海因莱因的书里第一次设下了抓住读者的钩子，让他们沉迷其中不能自拔。

From the half life of the hydantoin racemization, could be seen increase the temperature and pH are both good for the racemization, but if the pH value is too high the alkaline hydrolysis will happen and make some loss.

由海因消旋的半衰期可看出提高温度和pH对海因的消旋均有利，但pH过高的情况下海因则会发生碱解反应从而造成损失。

If the ratio of the auto racemization of the hydantoin is Multi-purpose water bath ch lower than the hydrolytic ratio of hydantoin hydrolase?

若海因的自发消旋速率远低于海因水解酶的水解速率，则海因的消旋将成为D2N2氨甲酰氨基酸生产中的一个限速步骤。

If the ratio of the auto racemization of the hydantoin is much lower than the hydrolytic ratio of hydantoin hydrolase, the racemization of hydantoin will be a speed limited step of the production of D2N2 carbamoylase.

若海因的自发消旋速率远低于海因水解酶的水解速率，则海因的消旋将成为D2N2氨甲酰氨基酸生产中的一个限速步骤。

The hydantoin convert enzyme used in this essay is D2 hydantoinase, which has very high convert activity for D2 hydantoin. Therefore, if the used process of conversion do not occur the enzyme, the racemizatoin of hydantoin will be a speed limited step for the process that hydantoinase produce optical active amino acid.

本文采用的海因转化酶系中所含为 D2海因酶，对D2海因的转化活性非常高，由此可见，如若采用的转化体系中没有消旋酶的存在，则海因的消旋成为海因酶转化生产光学活性氨基酸的一个限速步骤。

And 9. 21 ×l0〓, respectively. Biotransformation of 6 hydantoin derivatives were carried out using D-hydantoinase genetic engineering strain E. coli BL21/pMD-T〓-dht resting cells.

本文还比较了D-海因酶基因工程菌E.coli BL21／pMD-T〓-dht细胞对6种海因类衍生物的转化情况，对利用这条海因路线制备其它D-氨基酸进行了初步探索。

The resting cell of Alcaligenes eutrophus 112R 4 can catalyze the hydrolysis of hydantoin, dihydropyrimidine and succinimide effectively, but not function to 5-monosubstituted hydantoins or 5,5'-disubstituted hydantoins.

该菌能水解海因、二氢尿嘧啶和琥珀酰亚胺，且对琥珀酰亚胺活力最高，但不水解 5 单取代海因和5 ，5' 双取代海因，因而被确定为含有酰亚胺酶。

Isolation, purification and characteristics of D-hydantoinase were carried out. The experiment results showed that the optimal pH and temperature of pure D-hydantoinase were pH 8. 5 and 35℃, respectively. D-hydantoinase activity could be increased significantly by Mn〓 and Fe〓. Substrate specificity of D-hydantoinase on various hydantoin derivatives showed the optimal substrate of D-hydantoinase was 5-phenylhydantoin, but hydantoin, 5-methylthioehylhydantoin, 5-hydroxyphenylhydantoin, 5-methylhydantoin, 5-benzylhydantoin could also be hydrolyzed by D-hydantoinase.

本文还进行了海因酶的分离纯化及性质研究，发现酶的最适反应温度为35℃，最适pH为8.5，金属离子Mn〓和Fe〓能显著提高D-海因酶活力。D-海因酶的特异性实验表明，D-海因酶的最适底物为D，L-苯海因，其次为海因，D，L-对羟基苯海因和D，L-甲硫乙基海因，对D，L-甲基海因和D，L-苯甲基海因也有一定的作用。

D2 hydantoinase (EC3151212) can change the D type racemates of the racemic D,L252 monosubstituted hydantoin to D2N2 carbamoylase, and the leftover L252 monosubstituted hydantoin due to never reacted with D2 hydantoinase, shown as figure 1, firstly racemizing, thus makes the D,L2 hydantoin completely changes to pure optical D2N2 carbamoylase, and then be changed to D2 amino acid.

海因酶具有底物特异性，D2海因酶(EC 3151212)可转化外消旋的D ，L252单取代海因中的D型消旋体成为D2N2氨甲酰氨基酸，剩余的L252单取代海因由于完全不被 D2海因酶所作用，如图 1所示，先进行消旋，从而使得 D ，L2海因完全转化为光学纯的 D2N2氨甲酰氨基酸，并进一步被转化为D2氨基酸。

A friend of his father, a bar keeper, took Heintje under his protection and made sure that he could perform in the Limburg's coalmine district.

海因切父亲的一位朋友是酒吧老板，临时充当了海因切的监护人，并让海因切得到了在林堡矿区的表演机会。

My first article for Screen Power Magazine, which is to this day is the official magazine of Jackie Chan, was a DVD review of the Hong Kong actioner Gen-X Cops, starring Nicholas Tse and Daniel Wu.

我的第一篇文章为屏幕力量杂志，在对这天是Jackie Chan 正式杂志，是香港actioner Gen X 警察的DVD 回顾，担任主角Nicholas Tse 和丹尼尔吴。

His lips grazed hirs, Now what are you going to do?

他的唇使吃草了 hirs，现在你将要做什麼？