Assertion: lignin's group | /r/CapableOf | observe in solid state
Facets:
value: during irradiation of lignin
type: TEMPORAL
Source sentences:
text: This explains, at least partly, the increase in C-5 condensed phenolic groups observed during irradiation of lignin in the solid state (Argyropoulos and Sun 1996; Li and Ragauskas 1999).