(49) The diffusion–reaction–convection mechanisms proved to be important in the processes of transport and control with the microscale objects (like particles and sheets ... a given arrangement of ...

Passive permeability of a ... pharmacokinetic properties of a range of molecules to infer those for new molecules; and (3) estimation of permeability from the Smoluchowski equation, where free energy ...

To investigate further, joint first authors Andawei Miao and Tianyuan Luo measured the diffusion rate of molecules in wild-type mouse brain ... and blood-brain barrier transport. Therefore, whether ...

Victoria Moores joined Air Transport World as our London-based European Editor/Bureau Chief on 18 June 2012. Victoria has nearly 20 years’ aviation industry experience, spanning airline ground ...

Osmolarity, a measure of solute concentration ... one can predict the movement of water molecules or solutes between them through processes such as osmosis, diffusion, and facilitated diffusion.

Osmotic gradients are found in most human organ systems to enable transfer of osmotically active particles across membranes. Osmotic gradients can be bi-directional. In health, these gradients are ...

Key to osmosis is the presence of a semipermeable membrane that makes it more likely for water molecules ... lower concentration. Diffusion and osmosis are both passive transport processes ...

Object manipulation in such cases typically involves transport, pick-and-place and assembly of ... Here, we show autonomous position control of passive particles floating at the air-water interface ...

Describes the bulk movement of solutes across a membrane using a variation of Fickian diffusion. The driving force is the concentration difference of the solute across ... They included both passive ...

Diffusion is one of the most important ways that molecules move within the body. However, for the transport of big objects over large distances, standard diffusion becomes too slow to keep up. “That’s ...