Surgical mask covering of N95 filtering facepiece respirators: The risk of increased leakage.

Surgical mask covering of N95 filtering facepiece respirators: The risk of increased leakage.
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DOI:
10.1017/ice.2021.50
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发表时间:
2021-05
影响因子:
4.5
通讯作者:
Tipton SM
Tipton SM
中科院分区:
医学4区
文献类型:
--
作者:
Mueller JT;Karimi S;Poterack KA;Seville MTA;Tipton SM

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方法与仅使用N95 FFR相比,外科口罩对气流产生额外阻力。作为一种多孔介质,流体通过N95的运动容易度可以用达西定律中的渗透率“k”来建模。参考文献Whitaker 5达西定律指出,通过多孔介质的流速与渗透率和穿过该介质的压降成比例:
MethodsThe surgical mask creates additional resistance to airflow compared to only an N95 FFR. As a porous medium, the ease of movement of the fluid through the N95 can be modeled as permeability “k” in Darcy’s law. Reference Whitaker 5 Darcy’s law states that the flow rate through the porous medium is proportional to the permeability and the pressure drop across this medium:
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