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However, when the mesh size of mask fabrics is small enough to capture viruses, which are usually around one hundred nanometers in size, the fabric typically also restricts air flow, resulting in ...

Around 9:15 p.m. May 16, Rockford police say patrol officers were called to FLOW Supreme Air Sports at 5505 E. State St., for a burglary. When officers arrived, they learned four kids came into ...

all driven only by the flow of air. And it does all that with no brain at all. “I was in a lab, working on another project, and had to bend a tube to stop air from going through it. The tube ...