PMC:7796291 / 17081-17255 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T145","span":{"begin":38,"end":42},"obj":"Sentence"},{"id":"T146","span":{"begin":43,"end":55},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"f environmental impacts (Figure S5).\n\n3.2. Charge Decay\nTo examine the cause of reduced performance, the surface potential of the filter web was measured (Figure 3 and Figure"}