The phrase "at different operations" is correct and usable in written English.
It can be used when referring to various tasks, activities, or processes that are being conducted in different contexts or settings.
Example: "The team was involved at different operations throughout the project, ensuring that all aspects were covered."
Alternatives: "in various operations" or "across different operations".
In a broad range of gas and liquid flows studied (G= 0.10 0.70 and L= 0.5 5kg/m2s) at different operation conditions, CFD demonstrated the considerable effect of operating pressure in pressure drop, whereas a minor influence was detected for the liquid holdup.
The mass transport resistances of the URFCs at different operation modes were also compared.
Comparison of model results with experimental results at different operation factors indicates the agreement between the model and experiment results.
Cathodic water supply is identified as one of the main challenges and investigated at different operation conditions.
Multi-purpose operation at frequencies with leaps of about 30 GHz might be considered for plasma start-up, heating and current drive at different operation scenarios.
Besides, the carbon Zn-900 sample has been tested in a two-elecarbon Zn-900 usampleEMIm]BF4/AN as electrolyte at different operation temperatures of 25/50/80 °C.
In the paper, decontamination factor and flux values of the tested membranes at different operation condition are summarized as the reference for membrane selection and system design.
The plant is modeled and analyzed using parabolic trough (PTC) and Linear Fresnel collectors (LFR) at different operation modes in typical winter and summer days.
A range of degradation rates was determined using experimental results of both systems under two operation modes and validated by field data obtained at different operation modes applied to the filters.
Based on these results, it can be concluded that the main degradation of DMFC successively changes with operation time, which mainly comes from internal resistance enlargement, cathode concentration polarization and final deactivation of catalyst at different operation stages.
