The phrase "activity independently" is correct and usable in written English.
It can be used to describe performing a task or action without assistance or reliance on others.
Example: "She prefers to engage in her activity independently, allowing her to focus on her personal goals."
Alternatives: "work alone" or "operate autonomously".
Nucleolar 2′- O-methyltransferase [47], N-methyltransferase [48] and N-guanine tRNA methyltransferase [49] are all purified as single active components and are able to exploit their enzymatic activity independently.
Study showing that with artificially designed IRE-1 constructs it is possible to regulate RIDD and XBP-1 splicing activity independently.
These data strongly suggest that oxidative neutrophils are able to maintain NOX activity independently of glucose by deriving NADPH via an alternative mitochondria-dependent source.
The Ni P powder electrodes displayed little activity independently of the temperature of the Ni P powder preparation.
Simon, M. M., Y. Aragane, A. Schwarz, T. A. Luger, and T. Schwarz (1994) UV-B light induces nuclear factor kB (NFkB) activity independently from chromosomal DNA damage in cell-free cytosolic extracts, J. Invest.
Ishai A, Osborne MT, Tung B, Wang Y, Hammad B, Patrich T, Oberfeld B, Fayad ZA, Giles JT, Lo J, Shin LM, Grinspoon SK, Koenen KC, Pitman RK, Tawakol A. Amygdalar Metabolic Activity Independently Associates With Progression of Visceral Adiposity.
In this work, a model for catalyst deactivation in terms of fouling because of blockage of micropores of the catalyst is used to estimate activity independently of reaction rates; later cracking kinetic rates of a model compound are estimated.
Because the cellular mechanisms involved in PTH regulation of the skeleton remain vague, we sought whether PTH could influence HIF-1α expression and HIF-α-driven luciferase activity independently of altered oxygen availability.
Neuroimaging studies of reading often examine effects of task and stimulus properties on brain activity independently, but potential interactions between task demands and stimulus effects have not been extensively explored.
Although magnesium cannot be explicitly recommended at present, it may exert neuroprotective activity, independently from the occurrence of vasospasm.
While both PLK-1 and MDM2 regulate p53 activity independently, they also cooperate to modify p53 function.
