The phrase "activity was ascertained" is correct and usable in written English.
It can be used in contexts where you want to indicate that a particular activity has been determined or established.
Example: "After thorough investigation, the activity was ascertained to be a key factor in the project's success."
Alternatives: "activity was determined" or "activity was established."
The in-gel visualization of enzyme activity was ascertained by coupling the formation of NADH/NADPH to 0.3 mg/mL of phenazine methosulfate (PMS) and 0.5 mg/mL of iodonitrotetrazolium (INT).
OCT activity was ascertained by adding 1 mM succinyl-CoA, 1 mM oxalate, 15 µg of protein equivalent from P.fluorescens membrane fraction (which contains SDH), INT, PMS, and reaction buffer.
The total number of hours per week of physical activity was ascertained in 1980 and on eight subsequent questionnaires.
Marked increase in gastric TBARS activity was ascertained in the toxic control in comparison to intact control.
The enzyme activity was ascertained by using cumene hydroperoxide (both selenium and nonselenium enzyme types) as a substrate and GR coupled assay to monitor the oxidation of GSH [ 41].
The reducing power of the extract, which potentially serves as a significant reflection of the antioxidant activity, was ascertained using a modified Fe3+ to Fe2+ reduction assay, whereby the colour of the test solution, which was yellow, transforms to various hues of green and blue, based on the extent of the reducing power of the samples.
Because of the potential for such biases, the findings require further testing with a prospective study design where activities are ascertained in people who are pain free, and they are then followed up to assess the subsequent incidence of symptoms.
An "activation" or "regulated activity" status was ascertained for each of our cell line-derived ESR1, GATA3, and c-Myb gene signatures and applied to the Lim et al. the mammary gland lineage expression data (Figure 4, right).
The primary outcome measure, ocriplasmin activity levels, was ascertained in vitreous samples obtained at the beginning of vitrectomy with five time-points after preoperative injection: 5 30 minutes, 31 60 minutes, 2 4 hours, 24 hours, and 7 days.
The photocatalytic activity of TiO2 was ascertained by the photodegradation of methylene blue in solution.
The supercoiled pBR322 plasmid DNA cleavage activity of complex 1 was ascertained by gel electrophoresis assay.
