The phrase "activity is not decreasing" is correct and usable in written English.
You can use it to indicate that the level of activity is remaining stable or constant over a period of time.
Example: "Despite the challenges we faced, the activity is not decreasing, and we continue to see engagement from our users."
Alternatives: "activity is remaining stable" or "activity is holding steady."
From the previous work, although the enzyme interacted with PES- mathrm{NH}_2) membranes through PES- mathrm{NH}_2ion, the enzymembranesthroughnot decreased during the immobilization.
In K11, no significant drop of the CO2 signal was observed indicating that the metabolic activity was not decreased by ISMS.
Our results support these findings by showing that after a 30-min downhill walking exercise, electrically evoked reflex-wave activity was not decreased.
But the pattern was different: after the 4th injection the activity was not decreased on the second day. 2 weeks after the 4th injection it was reduced to 60.4%, and it never went up over this level.
However, the AP-1 transcriptional activities were not decreased after transfection of the emmprin siRNA into HEC-50B and KLE cells.
However, since overall activity rate was not decreased during refeeding in the current study (data not shown), the increased body weight is likely due to the higher total daily caloric intake.
The activity of lipase was not decreased significantly compared to the free enzyme as catalysts.
While this manuscript was under preparation, Hernandez's et al. [ 37] reported that the activity of cholinesterase was not decreased by arsenic.
Based on our experience from operation industrial incineration plants it has been proved that even after more than three years' operation the activity of filtration material was not decreased and efficiency of dioxins removal from flue gas ranges from 97 to 99% (Pařízek et al., 2008).
Also notable was that the mitogenic activity of the supernatants was not decreased by the thrombin inhibitor hirudin.
