The phrase "activity has been established" is correct and usable in written English.
It can be used to indicate that a particular activity has been set up or initiated, often in a formal or official context.
Example: "After several meetings, the activity has been established to promote community engagement."
Alternatives: "activity has been initiated" or "activity has been set up."
Alemtuzumab and rituximab remain the most active antibodies, and their single-agent activity has been established in previously untreated and relapsed patients with CLL.
A relationship between the concentration of oxygen defects and naphthalene oxidation activity has been established.
The positive influence of the UST on catalytic activity has been established too.
A relation between the surface morphology, the roughness factor, voltammetric charge and the electrochemical activity has been established.
On the other hand, mainly for simplicity, but partly perhaps in order to subsidize basic but dangerous industries, a uniform contribution rate for all classes of activity has been established in several countries.
Biofeedback-assisted modulation of electrocortical activity has been established to have intrinsic clinical benefits and has been shown to improve cognitive performance in healthy humans.
Antioxidant activity of flavonoids in vitro has been the subject of several studies, and important structure activity relationships of the antioxidant activity have been established.
In this study, human cells expressing DNA polymerase ζ (Pol ζ) variants with low fidelity or weak catalytic activity have been established with Nalm-6-MSH+ cells and their sensitivity to mutagenicity and cytotoxicity of benzo[a]pyrene diol epoxide (BPDE) and ultraviolet-C light (UV-C) was examined.
Numerous Polish Lutheran parishes, with schools and centers of cultural activity, had been established in the heavily Polish areas around Opole and Cieszyn in eastern Silesia, as well as in numerous cities and towns throughout the region and beyond, including Breslau (Wrocław) and Grünberg (Zielona Góra).
Westernized lifestyle and diet, specifically high consumption of red and processed meat, obesity, and low physical activity have been established as the main cause of increasing risk of colorectal cancer in most Asian countries.
In summary, the MLCE-like activity had been established in the ancestor of Oryziinae, and this ancestral LCE (ancOryzLCE) acquired the ability to cleave the peptide containing P at the P2 site.
