Definition Of Diffusion Limitation

Similarly the medium in which diffusion occurs could also be in one of the three physical states.

Definition of diffusion limitation. Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. The latter is appropriate for the condition of the diluted solution where long range diffusion is considered. Diffusion occurs when particles move from an area of high concentration to an area of low concentration. Diffusion controlled or diffusion limited reactions are reactions in which the reaction rate is equal to the rate of transport of the reactants through the reaction medium usually a solution.

The concept of diffusion is widely used in many fields including physics particle diffusion chemistry biology sociology economics and finance diffusion of people ideas and price. At a longer time the langevin equation merges into the stokes einstein equation. Diffusion limited gas exchange describes the scenario in which the rate at which gas is transported away from functioning alveoli and into tissues is principally limited by the diffusion rate of the gas across the alveolar membrane. Faster movement equals faster diffusion.

Medical definition of diffusion limitation. The action of diffusing. How to use diffusion in a sentence. Diffusion is driven by a gradient in concentration.

The process of chemical reaction can be considered as involving the diffusion of reactants until they encounter each other in the right stoichiometry and form an activated complex which can form the product species. The classic example of diffusion limited gas exchange is transport of carbon monoxide co across the alveolar. In the ultrashort time limit in the order of the diffusion time a 2 d where a is the particle radius the diffusion is described by the langevin equation. The factors affecting rate of diffusion are.

Diffusion definition is the state of being spread out or transmitted especially by contact. Diffusion is the net movement of anything for example atom ions molecules from a region of higher concentration to a region of lower concentration. The boundary layer hypothesis that the proliferation of cells in culture is limited by the rate at which some essential component almost certainly a growth factor diffuses from the bulk medium into the layer immediately adjacent to the plasma membrane. Increasing the catalytic speed past the diffusion speed will not aid the organism in any way and so represents a global maximum in a fitness landscape.