The traditional film model for particle dissolution assumes that flux behavior depends primarily on particle size relative to ...

Scientists who model membrane structure and dynamics ... On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and ...

This does not require a supply of energy because diffusion is a spontaneous process. This occurs when molecules are moved across the cell membrane from an area where they are at a low ...

Diffusion is the movement of particles from ... and is one of the ways substances can move across the cell membrane, into or out of the cell. Products of digestion, dissolved in water, can pass ...

Materials being examined currently are the electrolyte membrane, gas diffusion layer, catalyst, and ionomer. We examine material function at glucose concentrations similar to physiological levels to ...

As the topography of live cells is measurable ... is homogenous or that movement of molecules in the membrane occurs only by simple diffusion, we do suggest that either SPT be performed in ...

"These changes make the apical membrane—the top of the cell—less stiff and certain constituents of the tight junctions more mobile, without however affecting the barrier formed by these ...