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N95 and N99 Face Masks Protect You From Pollution, But ...

Jan 31, 2020 · These masks use military-grade filtration technology and protect you from dust, fuel-based contaminants, particulate matter, infectious pathogens, virus, bacteria, mold and spores as well as pollen. The activated carbon filter layer is developed by the UK’s Ministry of Defense and is designed to adsorb gaseous molecules.

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Mar 23, 2016 · Additional, and typically proprietary, software then is used to “slice” this virtual image into very thin 2D cross-sectional patterns. This layer data is used to instruct additive fabrication machinery as it builds a 3D physical model by “stacking” the 2D slices. Today, five additive fabrication methods …

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Carbon/carbon A composite of carbon fiber in a carbon matrix. Carbon fiber An important reinforcing fiber known for its light weight, high strength, and high stiffness that is produced by pyrolysis of an organic precursor fiber in an inert atmosphere at temperatures above 1,800° F. The material may also be graphitized by heat treating above ...

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