26-08-22
Method and Electrical Wire Connection Method Method and Electrical Wire…

 First, cross the core wire ends of the two conductors in an X shape, then wind them for 2 to 3 circles, straighten the two wire ends, and then wind each wire end tightly on the other core wire for 5 to 6 circles, and then cut off the redundant wire ends.…

 First, cross the core wire ends of the two conductors in an X shape,…


Gratis
26-08-22
What are the guard column and the in-line filter for liquid chromatography? How to use it? _ Impurities What are the guard column and…

Original title: What are the guard column and online filter of liquid chromatography? How to use it? In the previous video of ChromClass, we mentioned the protective column and online filter of liquid chromatography. At that time, some students were very…

Original title: What are the guard column and online filter of liquid…


Gratis
26-08-22
Difference between Short-path Distillation and Molecular Distillation-Shanghai DEA Difference between Short-path…

Original Title: Difference between Short-path Distillation and Molecular Distillation-Shanghai DEA Short-path distillation, "short path" refers to a shorter distance, in a broad sense, the evaporator adopts the design scheme that the distance from the…

Original Title: Difference between Short-path Distillation and…


Gratis
26-08-22
The decarboxylation reaction, The decarboxylation reaction,

Original title: The decarboxylation reaction, which has been studied for more than 200 years, can become a hot spot again in this way. Previously, we introduced the recent progress in the study of photoredox-catalyzed C (sp 3) -H arylation reactions ().…

Original title: The decarboxylation reaction, which has been studied…


Gratis
26-08-22
The high-content seeds of industrial hemp have passed the identification in Yunnan. What do the seed industry think? _ Hemp The high-content seeds of…

Original Title: High-Content Seeds of Industrial Hemp Passed Yunnan Identification, What Do Seed Industry People Think? Yunnan is a magical land with a long history of agricultural cultivation. Flue-cured tobacco and corn are common crops for farmers.…

Original Title: High-Content Seeds of Industrial Hemp Passed Yunnan…


Gratis