The phrase "around a factor of" is correct and usable in written English.
It is typically used to indicate an approximate multiplicative change or difference in a quantity.
Example: "The population of the city has increased by around a factor of three over the last decade."
Alternatives: "approximately three times" or "roughly a multiple of three".
"For 11C-substances, E/A0 varies between 0.0025 and 0.0055 mSv/MBq (around a factor of 2.2)." Should be "For 11C-substances, E/A0 varies between 0.0011 and 0.0087 mSv/MBq (around a factor of 8.0).
For 11C-substances, E/A0 varies between 0.0025 and 0.0055 mSv/MBq (around a factor of 2.2).
Using the entropy strategy increases the numerical accuracy by around a factor of two and we suggest its use in the highly magnetised regime of BH magnetospheres.
Next, after inclusion of the scan distortion, we see that the standard deviation is increased by around a factor of 5.
Across all conditions, monocular adaptation raised thresholds by around a factor of 2, and observers showed normal binocular summation, demonstrating that they were not binocularly compromised.
The resulting performance observed (see Figure 10) indicates that the benefit of using the policies, derived (i.e. learnt) over successive iterations, is around a factor of 2 compared with having no policies (i.e. statically configured channels).
With such a bias, the survival probability of a K-ras mutant cell in a WT background is around 65%, a factor of 4 5 larger than a WT cell in a WT background.
Last year, a team at the University of Florida showed they could achieve 8.6% energy conversion using graphene-based cells – far behind current commercial silicon photovoltaics (which achieve around 20%), but already a factor of four better than earlier than previous attempts.
In the daily chemical computational work, we have found that every layer adds efficiency with a factor of around 2 3 as time-consuming job definition, structure extraction and data collection are considerably facilitated.
Factor VIIIa augments Factor X activation by a factor of around 200,000.
In addition, the maximum amplitude of the transfer function is observed around 100 s, with a factor of 1.70.
