The phrase "activity has usually been" is correct and usable in written English.
It can be used to describe a pattern or trend regarding an activity over a period of time.
Example: "In recent years, the activity has usually been focused on sustainability and environmental awareness."
Alternatives: "activity has typically been" or "activity has generally been".
This activity has usually been connected to the right, though that's not always the case: while Chacarita Juniors fans parade Nazi banners in opposition to traditional rivals Atlanta, the barras bravas for Central Cordoba of Rosario proclaim themselves to be Trotskyists.
Lastly, we briefly expose some of the most promising directions for further investigation of RS FC in MS. Brain activity has usually been considered as a response to external and internal stimuli, though organized activity has also been demonstrated at rest.
Peroxiredoxins have generally been regarded as enzymes and their activities have usually been described with Michaelis-Menten parameters (see for example [ 15]).
The activity of polysaccharide cleavage enzymes has usually been evaluated by qualitative plate screening methods and quantitative colorimetric or chromatographic assays.
The relation between water activity and uptake by such polymers (isotherm) has usually been measured by equilibration with water vapor of known activity.
When it comes to the subject of men and sexual performance the onus has usually been on activities that can impose a stranglehold on love-making, such as downing one too many lagers before the occasion.
Elevated esterase activities conferring resistance to organophosphate insecticides has usually been linked to genomic amplification of specific alleles although gene over-transcription may also be involved [ 12].
This reaction has usually been used to test hepatic activity in different animal species.
Studies of early bactericidal activity (EBA) have usually been carried out over the first 2 days of treatment.
