The phrase "activity has ceased" is correct and usable in written English.
It can be used to indicate that a particular action or process has stopped or come to an end.
Example: "Due to unforeseen circumstances, all activity has ceased until further notice."
Alternatives: "activity has stopped" or "activity has ended."
The stress fluctuations due to such fault behavior can only be observed around active faults, and no fluctuation can be identified once fault activity has ceased.
Where one activity has ceased to inform a space, another might give it new meaning.
"It is commonly held that where independent activity has ceased, there too history has ceased," he noted.
Until 2000 some coal was mined there, but that activity has ceased; Argentina's needs are met by imports.
The law does give doctors the ability to remove a patient from life support, even without a family's consent, if a patient has a living will and if brain activity has ceased, said Pieter Carstens, head of the Department of Public Law at the University of Pretoria and an expert on legal medical issues.
However, the signatures of the travelling ionospheric disturbances (TIDs) are absent in this data, indicating that the medium scale TID (MSTID) activity has ceased by this time.
To reduce nutrient leaching, the amount of feed given at each feeding time was dependent on feeding activity of the prawns and the introduction of feeds was stopped when it was observed that active prawn feeding activity had ceased.
By the 1920s virtually all commercial shipping activity had ceased at the dock, although its warehouses did remain in use for the storage of goods transported by barge, road or rail.
The lag-corrected water vapor signal peaked 101.2±7.4 seconds after the peak CO2 output, by which point all fly activity had ceased.
