The phrase "activities are terminated" is correct and usable in written English.
It can be used in contexts where you want to indicate that certain activities have been stopped or concluded, often in formal or official communications.
Example: "Due to unforeseen circumstances, all activities are terminated until further notice."
Alternatives: "activities have ceased" or "activities are concluded."
NRF2 activation extends to the late stage, while HSF1 activity is terminated by the end of the intermediate stage.
Arf1 activity is terminated by its interaction with a GTPase activating protein (ArfGAP), which stimulates the hydrolysis of GTP to GDP.
Just consider the multiple privatisation failures so far: Iain Duncan Smith's outsourced Work Programme firms miss their targets by miles, while A4e's contract for mandatory work activity was terminated as "too great a risk".
The sharp decrease of the fluvial activity is terminated by two successive paleosols of Pleistocene Holocene transition.
The assay mixture incubated at 30 °C temperature for 1 h and activity was terminated by addition of 0.5 ml NaOH (0.5 M).
MMP activity is terminated in the brain mostly by four secreted tissue inhibitors of metalloproteinases (TIMPs) (see review by Huntley [6]).
Different proteolytic enzymes including pepsin, trypsin, chymotrypsin, proteinase K and pronase E were incubated with peptide for 6 h at 37°C and the activity was terminated by heating at 80°C before the peptide was used for assay.
Viability assay different concentration of trypsin (from 0.0002 to 2 mg/ml) incubated with peptides for 1 or 6 h at 37 °C, and the enzymatic activity was terminated by additional heat inactivation at 60 °C for 20 min.
Dispase activity was terminated by washing the globes three times in DMEM (high glucose and L-glutamine) plus 10% FBS (Gibco/Invitrogen, Carlsbad, CA).
Then, the enzymatic activity was terminated with equal DMEM containing 10% fetal bovine serum (FBS).
