The phrase "activity was established" is correct and usable in written English.
It can be used to indicate that a particular activity has been set up or initiated at some point in the past.
Example: "The community outreach activity was established to engage local residents in environmental conservation efforts."
Alternatives: "activity was initiated" or "activity was created".
40 Physical activity was established by asking 'How many days a week are you physically active with moderate intensity for at least 30 min?'.
The anticonvulsant activity was established in three seizure models i.e. MES, scMET and 6 Hz model.
An acyclic enediyne 5 with a novel phototriggerable device was also synthesized and its DNA-cleaving activity was established.
In order to discover novel inhibitors of this pathway, a cellular assay reporter of proteasome activity was established.
The effect of cultivation duration on antifungal activity was established by growing LAB during 24 and 48 h on modified MRS medium.
Importance of the interface between these domains and particularly of the 5 salt bridges for enzyme activity was established for protozoan OpdBs.
A volcano-like relationship between the amount of oxygen vacancy and the catalyst activity is established.
A relationship between the rate of sulfate decomposition and catalytic activity is established through detailed TG-DTA investigations of sulfated catalyst and support.
Inside each sector, the relationships between the corrected geomagnetic latitudes of the boundaries of each type of precipitation and the geomagnetic activity were established using a generalized regression technique.
Intensity of activity is established by multiplying the average hours per day for each item by a standard MET value (MET-h/day) The mean number of minutes per day spent in mild, moderate, and heavy intensity LTPA and ADL.
Descriptive statistics illustrate the frequency with which each type of cross-border activity is indicated across the sample, the time elapsed before each activity is established, and the combination in which they occur.
