The phrase "ascertain lead" is not correct and does not convey a clear meaning in written English.
It may be intended to express the action of determining or finding a lead, but the phrasing is awkward and unclear.
Example: "We need to ascertain the lead on this project to move forward effectively."
Alternatives: "determine the lead" or "identify the lead."
Last, because in some cases it was not possible to ascertain the lead institution organizing surveillance efforts in a given country (government versus in-country research organizations or outside institutions), this information was not compiled.
Therefore, paleoclimatologists must ascertain the leads and lags for each climatic and/or environmental event, and tephra allows them to do so.
The facts that have been ascertained, however, lead to a dark scenario.
After the multiple regression models were developed, regression diagnostics were employed to ascertain whether the lead coefficient was affected by collinearity or influential observations (Belsley et al. 1980).
In addition to characterization of bacterial virulence apparatuses that are for sure linked to disease outcome, host responses to such factors must also be examined hand in hand, to completely ascertain mechanisms that lead to gastroduodenal disease.
First, NHANES III data are cross-sectional so it is not possible to ascertain whether periodontitis led to hyperglycemia or vice versa.
The above discussed XPS analysis lead to ascertain that a covalent bond occurs between the metal atoms and the polymer functional group, DMPA (N atoms) and AM (S atoms), respectively.
In addition, all the participating children were questioned regarding their hobbies (to ascertain whether they involved potential lead exposure, e.g., shooting air guns, making lead soldiers, etc).
Therefore, it is important to ascertain which molecular alteration leads to the cognitive and emotional deficits seen in DM1 patients.
However, protein aggregation can of course be driven by vastly different mechanisms and further analysis would be required to ascertain whether this eventually leads to amorphous sub-visible aggregation, liquid liquid phase separation, precipitation, and gelation or crystallisation phenomena.
