The phrase "ascertain that possible" is not correct in written English.
It seems to be an incomplete expression and lacks clarity in meaning.
Example: "We need to ascertain that possible solutions are explored before making a decision."
Alternatives: "determine what is possible" or "verify the possibilities."
From the articles that reported details of PDSA cycles it was possible to ascertain that variation is inherent not just in reporting standards, but in the conduct of the method, implying that the key principles of the PDSA method are frequently not followed.
If the source is Russia, we should be able to ascertain that pretty quickly.
The White House takes care to ascertain that petition signatories are bona fide US citizens.
It was in News International's power to ascertain that, wasn't it?
Is that possible, though?
The method proposed by Kulmala [10] exploits a set of nine mechanisms through which ITS systems can affect road user behaviour and thereby road safety, to ascertain that all possible impacts (both positive and negative impacts on road safety; direct, indirect and unintended effects of systems) will be covered, and no effects counted twice.
In an ideal world, all of these professionals would be talking with each other as well as the patient to ascertain that the best possible care ― whole person care ― is being provided.
Even with the naked eye, out little busybody points out, it is possible to ascertain that the library (or at any rate the portion of the library which is visible in the photograph) harbors exactly 172 books.
Using statistical analysis, it was possible to ascertain that the procedures for determining plasmid stability (serial dilution and colony counting) were reproducible.
Due to the fact that standard substances of branched PFHpS and PFHxS were not available, it was not possible to ascertain that all the branched substances are separated completely from the linear ones.
