English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

The reversible A <-> B reaction-diffusion process, when species A and B areinitially mixed and diffuse with different diffusion coefficients, isinvestigated using the boundary layer function method. It is assumed that theratio of the characteristic time of the reaction to the characteristic time ofdiffusion is taken as a small parameter of the task. It was shown thatdiffusion-reaction process can be considered as a quasi-equilibrium process.Despite this fact the contribution of the reaction in changes of the speciesconcentration is comparable with the diffusion contributions. Moreover theratios of the reaction and diffusion contributions are independent of time andcoordinate. The dependence of the reaction rate on the initial speciesdistribution is analyzed. It was firstly obtained that the number of thereaction zones is determined by the initial conditions and changes with time.The asymptotic long-time behaviour of the reaction rate also dependents on theinitial distribution.

Reversible A <-> B reaction - diffusion process with initially mixed reactants: boundary layer function approach