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.
目的制备左沙丁胺醇盐酸盐，并对拆分后得到的S-沙丁胺醇进行外消旋化。
OBJECTIVE To prepare levalbuterol hydrochloride and make S-salbuterol racemized after the resolution.
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.
因此，倘若尸身被置于火场中，会完全扭曲外消旋化技术所判断的牙齿外观年龄——尸身被置于沙漠也同理。
So being in a fire will totally distort a tooth's apparent age via this technique - as might being left in a desert.
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.
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.
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.
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