This should be a diffusion process through the bulk of the modifier.
Finally, it should be noted that reactions can be diffusion controlled (Morelli and Ten Wolde, 2008; Rice, 1985).
So the exact diffusion coefficients should be determined from diffusion-limited currents, which were given in the following section.
The study implied that the characteristics of gas diffusion should be implemented by using the diffusion coefficient theory based on gas flow regime in shale gas reservoirs.
In this case, the same barrier ΔE d = ΔE r should be overcome for diffusion of the fullerenes along the nanotube axis and for rotation of the fullerenes about this axis (see Figure 3b).
The choice of access route (all neurovascular structures should be avoided) and diffusion of heat should be taken into account to avoid complications.
Because lidocaine is an anesthetic agent with a short duration (less than 1 h) [ 25], cerebellar functions should be restored after diffusion and metabolism of the agent.
Hence we expect that the growth of gold nanoparticle cores inside PNIPAM should be limited by diffusion and significantly slowed due to the polymer shell as compared to bare nanoparticles in solution.
The design concept for a diffusion barrier should be changed to sacrificial oxygen diffusion barrier concept, and both the RuTiN and the RuTiO films, as new sacrificial oxygen diffusion barriers, were proposed.
To explain this result we recommend that unmeasured rate constants for H+O2− and (e−)aq+O2− should be considered completely diffusion-limited.
