In the US a baroque webwork of agencies shares responsibilities for determining safe levels of chemical residue in and on food. |
Here, the amplitude of the eigenvector in the lowest-frequency mode is plotted on the ordinate whereas the abscissa shows the residue number. |
When heated this produces methane gas and a solid residue of sodium carbonate. |
An acetyl group was attached to residue 22 to mimic the preceding peptide bond and the C-terminal carboxylate was protonated. |
But this ersatz quality is not some accidental by-product or unintentional residue of Smyth's working methods. |
Surface exposure is often quantified using a measure of accessibility of a residue side chain to a solvent molecule. |