Zheng Li

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Questions related from Zheng Li

Column selections for separation of protein/peptides, DNA, or RNA?

Agilent technology provides a batch of columns for separation of protein/peptides, DNA, or RNA. However, are there any experts that can specify the columns for each category?

08 August 2013 8,221 0 View

What is the difference between number weighted and volume weighted size distribution in nanoparticle suspension?

When measuring the average particle sizes in nanoparticle suspensions, either number weighted or volume weighted size distribution can be used to characterize particle sizes. However, they are not...

08 August 2013 5,633 16 View

How many barriers are there that nanoparticles face in order to enhance absorption rate of encapsulated compounds in orally delivery process?

Nanoparticle delivery systems are designed for enhancing the bioavailability of encapsulated molecules in oral administration. However, multiple factors affect the destination of nanoparticles in...

08 August 2013 1,604 1 View

What approaches can be used to remove the excess amount of salts from HPLC systems?

For bio-molecule separation and analyses, buffers are always used as the mobile phase to give a high resolution and efficient result (such as ion-exchange and size exclusion). However, the excess...

08 August 2013 6,596 31 View