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同时也论述了氨基酸消旋的反应机理。The mechanism of the racemization was discussed.

发现旋光基质有外消旋作用。Racemization is found with optically active substrates.

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在那些案例中，外消旋化就能真的派上用场。And in these instance, racemization can really come in handy.

发现旋光基质有外消旋作用。Racemization is found with optically active substrate substrates.

本发明公开了一种外消旋化舍曲林异构体的方法。The invention discloses a method for the racemization of sertraline isomer.

动态拆分技术是将拆分反应与现场消旋化反应相结合的技术。Dynamic resolution technology combines the resolution with racemization in situ.

新技术的前身是已知的‘天冬氨酸外消旋化’技术——一项很重要的技术。The older of the technologies is known as aspartic acid racemization. A mouthful.

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继而研究了羧酸溶剂中水杨酸催化的中性氨基酸消旋。Effects of carboxylic media in the racemization of neutral amino acids catalyzed by salicylaldehyde were investigated.

截至他的研究小组出台新报告之前，科学家们未曾对比过同一颗牙齿的外消旋化以及碳14分析结果，布赫兹说道。Until his group's new report, scientists hadn’t compared racemization and C-14 analyses on the same teeth, Buchholz says.

目前关于52单取代海因的消旋的文献非常少，海因消旋的细节问题也没有被完全揭示。As so far, there is just a little of literature of L252 monosubstituted hydantoin , and the details of the racemization of hydantoin are not revealed.

分子量降低和消旋作用对温度的依赖性，是由于分子运动和笼罩效应以及重合的空间位阻效应所致。The dependence of chain scission and racemization on temperature results from molecular motion, "cage effect" and steric hindrance during recombination.

顺便说一下，如果你好奇为什么在判断牙齿年龄方面、外消旋化会比碳14定义的时钟精度差之甚多，那么部分原因与温度相关。By the way, if you’re curious about why racemization is so much less accurate a clock than C-14 for dating a tooth’s age, part of the explanation has to do with temperature.

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然而，当研究人员将两项技术一并运用于牙齿上，他们意识到外消旋化提供了一个额外的有用细节，能成为个体死亡年龄的良好衡量标准。However, when the researchers applied both techniques to teeth, they realized that the racemization offered an additional useful detail, a good gauge of an individual’s age at death.

通过分析其天冬氨酸发生了多少外消旋化，科学家可以确定牙齿主人在多大岁数死亡——通常精确到5年半左右，正负差4.2年。By analyzing how much racemization of its aspartic acid occurred, scientists can determine how old the tooth’s owner was at death — generally accurate to about 5.5 years, plus or minus 4.2 years.