Sentences with phrase «size fractionation»
The SLC6A4 promoter VNTR polymorphism was genotyped by agarose gel size fractionation as described in ref.
http://www.pnas.org/ Not exact matches
In a paper published Feb. 19 in Nature Cell Biology, the scientists show that a cutting - edge technique called asymmetric flow field - flow fractionation (AF4) can efficiently sort nano - sized particles, called exosomes, that are secreted by cancer cells and contain DNA, RNA, fats and proteins.
Regarding the SO2 «hockey stick», although it does not seem to relate to the process of preferential size dependent fractionation like CO2 does (SO2 kinetic diameter 0.36 nm / collision 0.41 nm) have you anything to add to why it is suspect?
What they call «differential diffusion» and «lower molecular volume» I call «preferential fractionation» and «kinetic diameter», the latter being the relevant measure of molecular size at the lowest level in the firn and n the ice beneath.
The effect appears to be size - dependent, because Ne, O2 and Ar have smaller effective molecular diameters than N2, and fractionation increases strongly with decreasing size.
The process that I am focussing on is the preferential size - dependent fractionation of CO2 at a much later stage when the pores and channels are approaching the size of those different molecules, Fickian diffusion no longer applies and molecule kinetic rather than collision diameter must be taken into consideration.