The phrase "ascertain the changes of" is correct and usable in written English.
It can be used when discussing the process of determining or finding out what changes have occurred in a particular context or situation.
Example: "The researchers aim to ascertain the changes of the climate over the past decade."
Alternatives: "determine the changes in" or "identify the changes to".
Vaccination service statistics (the EPI service time, the frequency of the vaccination service, number of attendance of the vaccination session) were collected from each immunization clinic and reviewed to ascertain the changes in performance of vaccination service.
Therefore, we looked at the production of 2-chloroethanol versus Pi concentration to ascertain the changes occurring in the overall yields of chloroethylating electrophiles.
The study was conducted on the status of the quality of water from the Owabi water treatment plant that supplies drinking water to Kumasi, a major city in Ghana, to ascertain the change in quality of water from source to point-of-use.
Optical microscopy was employed to ascertain the change in morphology of l-alanine crystals grown in the absence and presence of increasing amounts of l-leucine additive on blank PMMA at room temperature and using microwave heating for samples C1 C5, and these optical images are shown in Figure 1.
7 Price elasticity is the key parameter to ascertain the change in demand of a good with respect to changes in price.
In this study, we will make use of the Richards model to pinpoint the turning points of each wave of the epidemic, in order to ascertain the temporal changes of the epidemic in Taiwan in the summer months and during the fall and winter days.
To ascertain the clonality change of the passaged cells, the fluorescence intensity of the DNA histogram was analyzed using the CELLQuest software package.
Uncertainty in the choice of change coefficient could be overcome by conducting pilot studies to ascertain the likely change characteristic of the population of interest.
This was to ascertain the amount of changes and modifications needed to configure LEED-H to suit the local context.
Infrared spectroscopy was used to ascertain the type of changes that occurred in the oil under two conditions, oxidation and evaporation.
