double diffusion


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Related to double diffusion: Ouchterlony test

double diffusion

[‚dəb·əl də′fyü·zhən]
(fluid mechanics)
A type of convective transport in fluids that depends on the difference in diffusion rates of at least two density-affecting components. Also, it is necessary to have an unstable or top-heavy distribution of one component. For example, in oceanography, the two components are heat and dissolved salts, and the unstable component is the slower-diffusing salt.
References in periodicals archive ?
While the original double diffusion studies evaluated these treatments, there was no effort to assess the degree of fixation.
Double diffusion involves soaking the wood in a warm and then cold solution for about six days.
Evaluation of commercial enzyme immunoassays compared to immunofluorescence and double diffusion for autoantibodies associated with autoimmune diseases.