PMC:7796291 / 13078-13344 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T118","span":{"begin":139,"end":264},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"each layer of the respirators was measured firsthand with a thickness gauge applying a pressure of 2.4 N, and is presented in Figure 1C,F. It is noted that the measurements by the gauge were smaller than those estimated from the specific locations of Xμ-CT images. W"}