"performances were performed" is correct and usable in written English.
It is commonly used to refer to public entertainments such as plays, concerts, or shows. For example, "The theater's opening night featured several performances that were performed throughout the evening."
Experimental performances were performed to verify the results from the ANFIS approach.
Electrochemical performances were performed on the Autolab electrochemical workstation using a three-electrode mode in a 0.5 M Na2SO4 solution.
For this purpose, measurements of the rate of reactions, chemical shrinkage, autogenous shrinkage in free and restrained conditions and mechanical performances were performed on 12 binders prepared with the same water-to-cementitious materials ratio (w/cm = 0.32) and various dosages of PC, BFS and LF.
In addition, tests for the statistical significance of differences between team performances were performed.
As comparative electrochemical performances are performed on, the sample with more nanoplates shows a higher specific capacitance and promising cycling stability.
At 4 weeks of age, a pre-assessment of motor performances was performed.
Sensitivity studies to quantify the key parameters affecting the well performance were performed finally.
Experiments to confirm its operating performance were performed in liquid nitrogen (LN2).
In the work of [29], several experiments on the perception of emotional expression in musical performance were performed.
Nitrogen adsorption and desorption performance were performed using a specific surface area analyzer (Model Coulter SA3100, Beckman Co., Ltd., USA).
Finally, as a general rule analyses not involving measures of WM performance were performed on fMRI data from all trials (i.e., 30 per condition).
