permeation


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per·me·a·tion

(per'mē-ā'shŭn),
The process of spreading through or penetrating, as the extension of a malignant neoplasm by proliferation of the cells continuously along the blood vessels or lymphatics.
[L. per-meo, pp. -meatus, to pass through]

per·me·a·tion

(pĕr-mē-ā'shŭn)
The process of spreading through or penetrating, as the extension of a malignant neoplasm by proliferation of the cells continuously along the blood vessels or lymphatics.
[L. per-meo, pp. -meatus, to pass through]

permeation

(pĕr″mē-ā′shŭn) [L. permeare, permeate]
Penetration of and spreading throughout an organ, tissue, or space.
References in periodicals archive ?
Water vapor transmission rate (WVTR) was selected for studying the permeation behavior of nanocomposite blends because of the simplicity of the test apparatus and the ease of analysis of the permeation rate.
Microwave Treatment of Skin and Drug Permeation Study
2 which explained all the permeation parameters with associated standard deviations(+- SD).
Priest said that, in terms of permeation resistance, his firm's vinyl ester coatings (VE 62 and VE 62-AR) have moved the benchmark three decimal places.
However, the tortuous intercellular pathway is widely considered to provide the principal route and major barrier to the permeation of most drugs.
Flextank vessels maintain their oxygen permeation capability throughout their life, whereas barrels steadily lose it to become "spent" or "neutral" barrels after 4 or 5 years.
Figure 1 shows marked difference in methotrexate permeation profile by changing the hydrogel cross linking density.
Never clean O-rings with solvents since they will absorb the solvent and then cause swelling that, in turn, greatly increases permeation.
Designed for severe corrosion environments, series 434 can be trowel--or spray-applied on deteriorated substrates to form an extremely durable, low permeation lining that protects concrete against harsh chemicals and abrasion.
And while this proved the durability of the materials, it still left the problem of vapor permeation unanswered.
Until recently, there was no available data to predict their permeation rates.
announced today the release of its second generation OxyPerm Permeation System, an accurate and reliable oxygen permeation measurement system in a value-priced package.