The phrase "a decrease in the activity of" is correct and usable in written English.
It can be used when discussing a reduction in the level or intensity of a particular action, process, or function.
Example: "The study observed a decrease in the activity of the enzyme after the introduction of the inhibitor."
Alternatives: "a reduction in the activity of" or "a decline in the activity of".
Additional evidence that Theravada types of meditation lead to tonic alertness was obtained by several recent studies that have shown that Mindfulness (e.g., [ 112, 113]) and Shamatha [ 114] types of meditation can lead to a decrease in the activity of neural structures that are more active during unfocused activity than during attention demanding tasks [ 115– 115].
In individuals born with hyperammonemia, there is a decrease in the activity of two of these enzymes, namely, carbamyl phosphate synthetase and ornithine transcarbamylase.
A decrease in the activity of proprotein convertase subtilisin/kexin type 9 (PCSK9) increases the amount of low-density lipoprotein (LDL) receptors on liver cells and, therefore, LDL clearance.
A decrease in the activity of the nucleolus is especially remarkable, accompanied by a significant reduction in size and the modification in nucleolar architecture, as shown by FISH.
However, an excessively high Cl−/Cu2 + ratio can exert a detrimental effect on the process due to a decrease in the activity of Cu2 + as oxidant.
This could be attributed to a decrease in the activity of those vasoactive agents (including PGF2α, serotonin, endothelin-1 and acetylcholine), as suggested when they were exposed to CNP before being applied to arteries.
The Ebonex® support caused a decrease in the activity of the supported platinum catalyst, but enhanced the activity of the supported nickel catalyst, which was particularly effective for formaldehyde oxidation with base even exceeding that of the platinum/graphite catalyst.
Isoelectric focusing of PME isozymes revealed the presence of three isoforms; neutral PME activity was the major isozyme in control and hyperhydric leaves of the three varieties, whilst a decrease in the activity of the acidic isoforms was observed in hyperhydric leaves.
Receptor occupancy is directly correlated with a stimulation of adenylyl cyclase and a decrease in the activity of a cytoplasmic Ca++-sensitive cAMP phosphodiesterase.
5) Acidosis: metabolic acidosis favors coagulopathy by means of a decrease in the activity of coagulation factors and platelet function and the degradation of fibrinogen.
Another hallmark of severe drug addiction is a decrease in the activity of parts of the brain that inhibit impulsive behavior a characteristic that leads to impaired judgment.
