Experimental Study on the Evolution Trend of the Pore Structure and the Permeability of Coal under Cyclic Loading and Unloading.

ACS Omega · 2021 · PMC8717559 · PMID 34984312

Europe PMC DOI

hedged sentences

—

closest p

—

boldest claim

The sentences

showed a trendno p-value reported

According to Figure 10 , when the confining pressure remained constant, the permeability loss rate of the coal samples showed a trend of gradual increase with an increase in the number of cycles.

also in 53,322 other papers

a decreasing trendno p-value reported

That is, with an increase in the confining pressure, both the total porosity and the effective porosity of the coal samples showed a decreasing 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.