The results showed that both the monolayer bag and bilayer bag could improve the quality of fruit and the effect of bilayer bag was superior to monolayer bag , but the weight , content of solubility substance and acid of fruit had a decrease after bagging .
One of the reasons single-strand sequencing is so difficult , however , is that the combined thickness of the protein and bilayer means that as many as 15 bases may be inside the nanopore at any one time .
An ion channel is used to create a tiny hole in this layer , and a molecule with a slight negative charge is placed on one side of it . Applying a voltage across the bilayer causes the molecule to push its way through the pore to the other side .