The phrase "activity when it was" is not correct and lacks clarity in written English.
It may be used in contexts discussing a specific activity that occurred at a certain time, but it requires additional context to be meaningful.
Example: "The activity when it was most engaging drew a large crowd."
Alternatives: "event at the time" or "action during that period".
To ensure that the recombinant enzyme expressed and purified in our experimental settings was fully active, we determined its specific activity when it was freshly prepared as well as prior to performing the thermodynamic experiments.
Because the plasmin completely lost its activity when it was incubated with Zn2+ and Cu2+ [ 32, 33].
Deferoxamine (40, 80 or 157 mg/kg, three times a day) did ameliorate disease activity when it was administered during active disease in male SJL mice given purified MBP and pertussis toxin injections (Pedchenko and LeVine, 1998; Table 1).
Whether the star's activity when it was younger could have stripped Proxima b of an atmosphere remains to be discovered, while it is also unknown if the planet has a magnetic field which could potentially protect it from such radiation.
There was no detectable TcADD enzyme activity when it was heated above 60°C.
The results depicted that laccase nanoparticle retained 82% of residual activity when it was stored at 4 °C for 60 days, while purified laccase retained only 44% of its initial activity.
For instance, the prototype BVMO, cyclohexanone monooxygenase, loses dramatically its activity when it is incubated with 5% of solvents and its tolerance is very poor, since after 20 min incubation with 5% methanol the enzyme is completely inactivated (Secundo 2011).
We present, in Section The binding of 5mTHF to GNMT, evidence from the mathematical modeling that GNMT retains 50%% of its activity when it is once bound by 5mTHF but not when it is twice bound.
The incorporation of gC3N4 leads to a further improvement on the photocatalytic activity when it is specifically done over TiO2.
It is known that the short-latency stretch reflex (SLSR) is modulated by the background muscle activity when it is elicited at matched torque levels.
Sudden alterations to millions of contracts can have large effects on economic activity, so faster inflation can stimulate real activity when it is unexpected.
