permeation+with+air+or+gas

  • 21Package testing — Military shipping container being drop tested Testing …

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  • 22Membrane reactor — A membrane reactor is a piece of chemical equipment that combines a catalyst filled reaction chamber with a membrane to add reactants or remove products of the reaction. Chemical reactors making use of membranes are usually referred to as… …

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  • 23Moisture analysis — covers a variety of methods for measuring moisture content in both high level and trace amounts in solids, liquids, or gases. Moisture in percentage amounts is monitored as a specification in commercial food production. There are many… …

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  • 24William C. Pfefferle — (born Philadelphia, Pennsylvania) is an American scientist and inventor. Nicknamed the father of catalytic combustion, he invented the original catalytic combustor for gas turbine engines in the early 1970s. Gas turbines work by mixing fuel with… …

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  • 25Quantum dot — Part of a series of articles on Nanomaterials Fullerenes …

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  • 26O-ring — This article is about the mechanical seal. For other uses, see Oring. Typical O ring and application An O ring, also known as a packing, or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a disc… …

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  • 27Moisture vapor transmission rate — (MVTR), also water vapor transmission rate (WVTR), is a measure of the passage of water vapor through a substance. There are many industries where moisture control is critical. Moisture sensitive foods and pharmeceuticals are put in packaging… …

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  • 28Vapor barrier — 6 mil Polyethylene plastic sheet as vapor barrier between insulation and gypsum board …

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  • 29Nanocellulose — or microfibrillated cellulose (MFC), is a material composed of nanosized cellulose fibrils with a high aspect ratio (length to width ratio). Typical dimensions are 5–20 nanometers width and length up to 2000 nanometers. It is pseudo plastic.… …

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  • 30HEBREW LITERATURE, MODERN — definition and scope beginnings periodization …

    Encyclopedia of Judaism