Assertion: pyruvic acid | /r/CapableOf | decrease with time
Facets:
value: on stream
type: LOCATION
value: gradually
type: MANNER
Source sentences:
text: Furthermore, the experimental results in the absence of O 2 , replaced by N 2 , showed that a small amount of pyruvic acid formed, and it gradually decreased with time on stream, demonstrating lattice oxygen as an active species for the oxidative dehydrogenation of lactic acid.