The phrase "ascertaining not" is not correct and does not convey a clear meaning in written English.
It seems to be an attempt to express a negation related to the act of ascertaining, but it lacks clarity and proper grammatical structure.
Example: "In the process of ascertaining not the truth, we overlooked important evidence."
Alternatives: "failing to ascertain" or "not determining".
Subsequent harmonic balance analyses ascertain not only these two sustained oscillations, but also two other unstable limit cycles.
Practical reason, according to the vision, can ascertain not merely the means to achieve one's ends, but also the very telos or end for human beings.
What accounts for the disjuncture is difficult to ascertain, not because of the design of the framework but, rather, the relatively small sample size has not allowed for certainty in inferences.
However, a better understanding of the biological effects of these molecules must be ascertained, not least to identify any undesired secondary effects, such as tumorigenesis.
Outcomes on learning are more difficult to ascertain, not least because measurement methods are still poor.
Females in reproductive age were ascertained not to be pregnant and informed to use effective contraceptive methods, if applicable.
Second, it should be remembered that this is an observational study and that only the associations between target and outcome can be ascertained, not cause and effect.
It is therefore important in any survival study to ascertain not only the extent of loss to follow-up, but also its independence of the probability of death.
The people working there utilised a database into which they could plug in the name of any Colorado voter and ascertain not just their political leanings but their personality traits, enabling them to micro-target advertising.
Cause of death was not ascertained and could not be retrieved because the data were anonymized.
