The phrase "are manipulated simultaneously" is correct and usable in written English.
It can be used in contexts where multiple elements or variables are being altered or controlled at the same time.
Example: "In this experiment, the variables are manipulated simultaneously to observe their combined effects on the outcome."
Alternatives: "are adjusted at the same time" or "are altered concurrently."
The timed food restriction protocol used to study entrainment of the FEO carries the confounding risk that two variables are manipulated simultaneously: meal timing and reduced food intake (∼70 75% for 3 h food access in mice; [33]).
This is reinforced when vegetation size and temperature amelioration are manipulated simultaneously with temperature in order to simulate an elevational gradient more realistically.
Furthermore, the discrimination performance is higher when both the frequency and phase are manipulated simultaneously (multidimensional design), compared with the case when each of these dimensions is varied separately (single-dimensional design).
Importantly, multiple environmental variables can be manipulated simultaneously in the model to explore earthworm population exposure and effects to combinations of stressors.
There appears to be no simple procedure to compute CDOF, the maximum number of flows that can be manipulated simultaneously, especially in the context of plant-wide control (PWC) of industrial processes.
By incorporating a constitutive Cre driver line into a mouse model in which FRT-regulated genes in other cell types are regulated by Flp- FRT recombinase, gene expression can be manipulated simultaneously in separate tissue compartments.
Based on the results obtained in our study, the co-localized QTLs located on LGs 3, 5, 6, and 7 are good candidates for MAS, since they showed stability across significantly correlated traits, while also sharing QTLs for more than one trait, and they could be manipulated simultaneously in breeding programs.
Because control of Cd translocation and accumulation is likely to be partially controlled by the plants genetics, the Cd contents of grain and the aerial parts of rice may be manipulated to simultaneously improve food safety and Cd uptake for phytoextraction.
However, the interpretation of results obtained using these schedules is complicated by the fact that magnitude and delay of reinforcement are generally manipulated simultaneously.
"There are many others who are manipulating.
