The phrase "a factor of activity" is correct and usable in written English.
It can be used when discussing elements or components that contribute to or influence a particular activity or process.
Example: "In our research, we identified a factor of activity that significantly impacts the overall performance of the team."
Alternatives: "an element of activity" or "a component of activity".
The relatively higher frequency of falls and near-falls reported in this study may be a factor of the activities and circumstances related to the fall.
The resultant PtFe/GCM shows the significant enhancement in ORR activity, including a factor of 8.47 enhancement in mass activity (0.72 A mgPt−1), and a factor of 7.67 enhancement in specific activity (0.92 mA cm−2), comparing with those of the commercial Pt/C catalyst (0.085 A mgPt−1, 0.12 mA cm−2).
It has previously been shown that mutant splicing factors, for which the mutation decreased their affinity to the target RNA motif in vitro by a factor of five, had reduced splicing activity in cells42,52.
150 was the radionuclide calibrator dial setting for the 177Lu, and the readout had to be multiplied by a factor of 10 to obtain the activity value [13].
They found that animals that lived in areas with high human activity were indeed shifting to more nocturnal activity, by a factor of 1.36.
Voltammetric and chronoamperometric studies of the ethanol electrooxidation revealed that these nanowires had a higher catalytic activity by a factor of two relative to these nanoparticles.
Compared with undoped TiO2 nanotubes, bismuth doped TiO2 photocatalyst showed a higher photocatalytic activity by a factor of 4.0 for phenol degradation under visible light irradiation.
Each zero-valued bit decreased the specific activity by a factor of exp(g i).
C-Terminal amidation of tritrpticin resulted in only a moderate increase in antimicrobial activity, by a factor of about 2 (44).
These two derivatives had similar activities (within a factor of 4) in the WR and IHD-J assays.
