Nonnatural amino acid 3 (4 thiazolyl) D, L alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR, NMR, elementary analysis and melting point.
合成了非天然氨基酸3- （ 4 -噻唑基） - D，L -丙氨酸盐酸盐以及三个中间体，其结构分别通过红外光谱、核磁共振、元素分析、熔点等测试手段得到确证。
The temperature gradient in front of S/L interface was measured on Zone Melting Liquid Metal Cooling(ZMLMC) directional solidification apparatus.
对定向凝固区域熔化液态金属冷却法的固液界面前沿温度梯度进行了测定。
It was found that poly (L-lactide) is thermally unstable above its melting temperature.
实验表明在高于聚合物熔点温度以上，聚丙交酯表现出热不稳定性。
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