diffusion of gases

diffusion of gases

a natural process, essential in respiration, in which molecules of a gas pass from an area of high concentration to one of lower concentration.
References in periodicals archive ?
The products can control the environment inside the packaging bags and prevent the diffusion of gases such as oxygen, carbon dioxide and ethylene.
Diffusion of gases is emphasized in this representation, and it is important to note that gases, like liquids, diffuse from regions of greater to lesser concentration.
Gas particle interchange as a result of Brownian motion contributes to the diffusion of gases in the respiratory tract.
These two specific welding defects formation are generally assumed to be caused by diffusion of gases that are introduced, during welding process, in melted metals bath or to gases being in base materials from other manufacturing processes.
Shortly thereafter, Michael Faraday and Thomas Graham, two scientific pioneers known primarily for their work with electricity and diffusion of gases, respectively, contributed further to the analysis of nanoparticulate suspensions, i.
The first term changes with time because of outwards diffusion of gases inside the cells and inwards diffusion of air; this leads to a worsening of insulating properties with time, which is known as thermal ageing and represents one of the major drawbacks of the use of those materials.
Moisture migration, solubility of gases, diffusion of gases, yeast, and drying and condensation are discussed in a chapter dedicated to frozen doughs.
Aerosols are formed by diffusion of gases and liquids in air (Sharma 1992).
A GDL allows the even diffusion of gases against the membrane at the heart of a PEM fuel cell.
In Eq 1 the contributions of solid conduction and radiation are constant with time, while the contribution of gas conduction, which represents at least 50% of the total thermal conductivity, changes with time because of outward diffusion of gases inside the cells and inward diffusion of air.

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