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The phrase "a previous study were" is not correct in written English.
The correct form should be "a previous study was" since "study" is singular.
Example: "A previous study was conducted to analyze the effects of sleep on cognitive performance."
Alternatives: "an earlier study was" or "a prior study was".
Exact(33)
Porous carbon xerogels synthesized in a previous study were investigated as catalysts supports.
Post-fire mechanical properties obtained from a previous study were used in this study.
The experimental data reported in a previous study were used to build the neural network.
A total of 368 copies of a questionnaire adapted from a previous study were sent to registered physiotherapists working in Nigeria as of May 2007.
Chemical-physics interactions between carrageenan, milk proteins and starch, characterized in a previous study, were the starting point for the elaboration of these schemes.
The driving-point mechanical impedances distributed at the fingers and palm of the hand reported in a previous study were used to determine the parameters of the models.
Similar(27)
For this, the results of a previous study are summarized below [9].
A blast data base developed in a previous study is used in the current study.
An ignition delay time correlation for methyl acetate (MA) from a previous study is also employed in the comparison.
The dispersion relations of plane harmonic waves in the micropolar continuum model, developed in a previous study, are also calculated.
A microwell presented in a previous study is separated into two parts, which are regarded as the measurement electrodes.
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