Assertion: lignin's unit | /r/HasProperty | unchanged
Facets:
value: after irradiation
type: TEMPORAL
value: essentially
type: DEGREE
Source sentences:
text: Further, it has been found that the content of noncondensed -aryl ether units in bleached spruce thermomechanical pulp was essentially unchanged even after irradiation that caused an extensive brightness loss (Pan et al. 1992).