双语科技百科(近现代成就) 第95期:第一个人工合成牛胰岛素【亚博app下载官网】

Synthesized Crystalline Bovine Insulin第一个人工合成牛胰岛素Synthetic bovine insulin, which was fully developed in 1965 following 6 years of hard work by a group of Chinese scientists, was the first case of human beings synthesizing live proteins. This is the first time that zoetic protein has been synthesized by human in history. In the past it was a universal belief that man could by no means synthesize living body. The success made it possible for Chinese scientists to deflate the traditional concept. Synthetic bovine insulin marked a significant breakthrough in the fIeld of life science and has substantially influenced human endeavors in finding out the secrets of life.1965年,我国的科学工作者经过6年多坚持不懈的希望,取得了人工合成的牛胰岛素结晶。

亚博app下载官网-NTT验证世界最高精度GHz单电子转移元件

NTT于2016年7月5日宣告,与英国国家物理实验室(NationalPhysicalLaboratory,NPL)联合检验了用硅晶体管制作的单电子移往元件(一一精确运送每个电子的元件),使该元件以1GHz高速工作,证实其在千兆赫兹范围内具备世界最低精度(9.2×10-7以下的错误率)。

【科普】溶出度仪的用途-亚博app下载官网

药物在体内吸取速度经常由沉淀的高低而要求,液体制剂中的药物在被吸取前,必需经过瓦解和沉淀然后改以溶液的过程,如果药物容易从制剂中释放出或药物的沉淀速度十分较慢,则该制剂中药物的吸取速度或程度就有可能不存在问题,另一方面,某些药理作用轻微,安全性指数小,吸取很快的药物如果溶出速度太快,有可能产生显著的不良反应,保持药效的时间也将延长,在这种情况下,制剂中药物的溶出速率应予以掌控。

亚博app下载官网_再也不怕丢车了 会喷射致命臭气的防盗锁

The aptly-named SkunkLock is an ingenious bicycle lock that blasts would-be thieves with a disgusting cocktails of chemicals that most of the time causes them to vomit uncontrollably.粪锁住是一种有创新的自行车锁住,恰如其名,它不会向想偷车的贼喷出一种令人恶心的气体,大多数时候不会让他们掌控不了地腹泻。