450483.fig.007
Figure 7: Nitrogen adsorption-desorption isotherms for the reservoirs at different stoichiometric relation as follows: (–▪–) reference-SiO2 1 : 8, (–•–) ketorolac-SiO2 1 : 8, (–▲–) Reference SiO2 1 : 4, and (––) Ketorolac SiO2 1 : 4.