PMC:7784787 / 70-786 JSON TXT

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Id	Subject	Object	Predicate	Lexical cue	tao:has_database_id
4	78-86	Disease	denotes	COVID-19	MESH:C000657245
5	457-463	Disease	denotes	breath	MESH:D004417

Id	Subject	Object	Predicate	Lexical cue
T3	0-4	Sentence	denotes	Aim:
T4	5-87	Sentence	denotes	Face masks are an important addition to our arsenal in the fight against COVID-19.
T5	88-253	Sentence	denotes	The aim of this study is to present a novel method of measuring mask performance which can simultaneously assess both fabric penetration and leakage due to poor fit.
T6	254-274	Sentence	denotes	Materials & methods:
T7	275-342	Sentence	denotes	A synthetic aerosol is introduced into the lung of a medical dummy.
T8	343-464	Sentence	denotes	A conical laser sheet surrounds the face of the dummy where it illuminates the aerosol emitted during a simulated breath.
T9	465-513	Sentence	denotes	The system is demonstrated with five mask types.
T10	514-526	Sentence	denotes	Conclusions:
T11	527-643	Sentence	denotes	The curved laser sheet highlights both penetration through the mask fabric and leakage around the edges of the mask.
T12	644-716	Sentence	denotes	A large variation in both material penetration and leakage was observed.