全二维色谱技术2D CCC×HPLC是建立在高速逆流色谱与高效液相色谱基础上的一种全二维色谱技术。借鉴二维核磁共振图谱（2D NMR）解析的思路，首次将2D CCC×HPLC与二维微馏分活性评价技术相结合应用于几种天然产物中活性成分的筛选、分离纯化与活性测试 ...

Moog, a fan of the theremin – the touchless electronic instrument created in the 1920s – experimented with adding amplifiers to the synth's oscillators to make a more portable version of the ...

The buttons to the top left are different colours, but also several controls appeared to be labelled differently on the two units: the button marked Machines on one says Instruments on the other, and ...

采用液相色谱系统，配备通微特色蒸发光散射检测器，可以实现壳聚糖含量的检测，方法准确、灵敏度高，可以满足日常分析检测要求。 糖醇是糖类的醛基或酮基被还原后的物质。一般是由相应的糖经镍催化氢化而成的一种特殊甜味剂，具有甜度较蔗糖低，热值 ...

And, in the process of making new sounds, new instruments have been created as well. Música Mexicana has been pushed into the mainstream over the last five years by Gen Z and millennial Latino ...

As the name for the period suggests, there was a strong move away from the old Medieval traditions towards a new enlightened era. For the world of music, it meant that the development of existing ...