The phrase "activity during the first" is correct and usable in written English.
It can be used when referring to actions or events that took place in the initial part of a specified time period.
Example: "The activity during the first week of the project was crucial for setting the foundation for our success."
Alternatives: "actions in the initial" or "events in the first phase".
Radiation (30 Gy) with or without MG-132 pre-treatment also failed to activate caspase-3-like activity during the first 3 hours.
In Fig. 1B the total luciferase activity during the first 50 s after XA activation is plotted against compound concentration, showing that inhibition of the XA-induced Ca2+ response was specific to U73122 and maximal at around 5 µM.
Participating in an extracurricular activity during the first semester provides contact with students who share interests.
Despite this flurry of regulatory activity, during the first half of January Kerviel amassed a large long position on futures, betting this time on a market recovery.
In Fig. 5, we show aftershock activity during the first 10 days of the post-seismic slip event.
Physical activity during the first three decades of life may increase peak bone mass and reduce future osteoporosis risk.
Initiation of bST administration at 12 DIM and dietary n-3 fatty acids altered ovarian activity during the first 90 DIM and could benefit reproductive performance.
Although there are slight bumps in activity during the first and last months of the year, there is a slight, arcing curve that seems to crest around June before tapering off throughout the rest of the year.
The insert at pH 6 shows the increase of T. versicolor laccase activity during the first days of incubation, also observed at pH 5, 7 and 8. L Tv was more stable than L Sc in acidic and neutral pH.
The increased D-galacturonic acid uptake of the transformant was not reflected in the basal GaaA enzyme activity during the first hours of growth on D-xylose and D-galacturonic acid.
Paging activity during ({text{ e}}_1) (Fig. 5) was higher in Linux, and particularly high in Windows, whose intense page-in activity during the first seconds may be explained by the paging demanded to load the experiment program and dynamic libraries.
