Sentence examples for difficult to ascertain at present from inspiring English sources

It is indeed difficult to ascertain at present which factors, biological or environmental, cause the documented sex differences in the human brain, although significant evidence suggests that gonadal hormones are among these factors [ 12].

The evolutionary history of this elongation, and indeed of the further methylation to HDMBOA-glucoside is difficult to ascertain at present, because Bx6 and Bx7 have not been sequenced in other benzoxazinoid producers, and the last methyltransferase gene is still unknown.

Michael Mansfield Very difficult to ascertain at the moment the extent to which the media has truly changed its spots.

The reason(s) why scores did not differ significantly between the groups for these items is difficult to ascertain from the present study.

It is often difficult to ascertain how long a hole has been present.

It's difficult to ascertain whether efforts aimed directly at consumers ultimately translate into real sales.

"This was false information; it may be incredibly difficult to ascertain whoever was selling stock at those prices, who was the guilty party.

Sometimes, even the number of species present may be difficult to ascertain.

Due to the turnover of managers, health workers and HFC members, it was difficult to ascertain exactly what had been covered at what point.

The platelet concentration present in ascites is difficult to ascertain, as platelets entering the peritoneal cavity would be expected to adhere to collagen in the peritoneal wall.

However in this present study it was difficult to ascertain whether the students' unwillingness to report symptoms could have been affected due to the presence of the school health doctor who conducted the interview.