The phrase "an increase was observed" is correct and usable in written English.
It can be used in contexts where you are reporting findings or results, particularly in scientific or analytical writing.
Example: "In the study, an increase was observed in the participants' performance after the training program."
Alternatives: "an increase was noted" or "an increase was detected."
In addition, neither saline nor MSI-1436 sincreasedtly increaseDAdecaycay rates while such an increase was observed with bupropion.
Corrosion potential and current of the control specimens decreased with time for 40 days after which an increase was observed.
Of those participants that attended >85% of classes, an increase was observed in the average number of push-ups, trunk flexion, and balance time on each foot.
In addition, the non-desired conversion of ethylene into ethane over the rutile-based catalysts decreased with rising temperature from 473 K to 523 K, while an increase was observed for the anatase-based materials.
The nonlinear absorption coefficient, β, and nonlinear refractive index, n2, for N-GO NCs at the laser intensity of 113 MW/cm were measured and an increase was observed in both parameters after addition of nitrogen to GO.
A decrease in intracellular GSH levels, rather than an increase, was observed in GGT-transfected cells; moreover, in cysteine-deficient conditions, the expression of GGT did not provide transfected cells with the ability of utilising extracellular GSH.
Such an increase was observed in our study and is consistent with the lipid sink theory.
For the +6°C scenario, an increase was observed until ca. 2060 when SOL thickness started to decrease.
In the present study, both ACL and UI values decreased with increasing salt concentration up to 1.5 M NaCl but an increase was observed for higher salt concentrations (Fig. 4).
However, an increase was observed in the levels of phosphorylated AMPK (Fig. 2C and 2D).
However, an increase was observed at 72 hours post treatment in an adenocarcinoma cell line.
