根据药品注册的国际技术要求(ICH)中杂质的含义, 杂质分为有机杂质、无机杂质和残留溶剂。有关物质是杂质的一种, 主要是指有机杂质。它的检查方法很多, 而其中的HPLC法具有专属性强、分离效果好、灵敏度高、分析速度快、重复性好、操作简便等诸多优点, 且能与多种类型检测器联合应用, 能满足大多数化合物种类的检测需要, 比较符合有关物质检查时杂质含量低、种类多的特点 。
日本研究人员首次制造了全氟铜苯（C8F8）。该分子做为一个盒状结构可以捕获并保留单个电子，这是量子力学“盒子中的粒子”原理的一项罕见的研究发现。
瑞士洛桑联邦理工学院（EPFL）研究人员发现，二氧化钒（VO2）一种用于电子产品的化合物，和大脑一样具有记忆功能，能够“记住”以前外部刺激的整个历史，这是二氧化钒首次被确定为具记忆特性的材料。
“对于参与中国未来的发展，巴斯夫信心十足。”11月10日，德国化工龙头巴斯夫向贝壳财经记者表示，依托巴斯夫在中国市场具有竞争力的技术优势和市场地位，企业将进一步发展中国本地的业务
This Chinese New Year just passed will be an unforgettable Spring Festival for all Chinese people. People had no time to celebrate the coming of the Year of 2020 before a sudden attack of new crown pneumonia, which has completely broken the festive atmosphere that should have been for this. On December 8th, 2019, the first patient with unexplained pneumonia appeared in Wuhan, and subsequent cases of pneumonia occurred throughout the country and even around the world. Tens of thousands of people have been diagnosed with the infection so far. Starting on January 23rd, 2020, Wuhan has unprecedentedly suspended public transportation and barred citizens from leaving Wuhan. Subsequently, all parts of the country actively responded to the prevention and treatment of new coronary pneumonia. On January 30th, 2020, the WHO (World Health Organization) has announced that Wuhan pneumonia, the new type of coronaviruses, is an Public Health Emergency of International Concern (PHEIC).
ALD 和 CVD 是有助于在基板上沉积薄膜的薄膜沉积技术。两种技术之间的主要区别在于它们沉积薄膜的方式。ALD 和 CVD 之间的主要区别在于原子层沉积 (ALD) 一次沉积一个原子层的薄膜，而 CVD 可以沉积厚度范围更广的薄膜。
