The Chemical and Alignment Structural Properties of Coal: Insights from Raman, Solid-State <sup>13</sup>C NMR, XRD, and HRTEM Techniques.

ACS Omega · 2021 · PMC8153919 · PMID 34056282

Europe PMC DOI

hedged sentence

—

closest p

—

boldest claim

The sentences

a decreasing trendno p-value reported

an increasing trendno p-value reported

Overall, the aliphatic carbon showed a decreasing trend with increasing maturity, while the aromatic carbon exhibited an increasing trend.

also in 47,180 other papers

Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.