Sentence examples for problematic to obtain a from inspiring English sources

The crested newt Triturus cristatus superspecies (Amphibia: Salamandridae), distributed in Europe and adjacent Asia, is an example of a relatively old, rapid radiation, for which it has proved problematic to obtain a resolved phylogenetic tree.

Such a score may be problematic to obtain for exposures with few genetic determinants which are valid IVs.

It is also problematic to obtain some information (e.g. parental occupation) from children.

It was also somewhat problematic to obtain reliable accounts of the participants' diets in the interviews.

Note that with the possible exception of the critical NUTRIENT levels, none of these tuned parameter values map directly to measurable in vitro counterparts, and it would be problematic to obtain such values through experimentation.

Although it seems safer and less problematic than arthroplasty, the results are quite variable and it is generally difficult to obtain a solid fusion.

To obtain a tazkera, an Afghan woman needs consent from her husband or father, which can prove particularly problematic in cases of domestic abuse.

And a promise to obtain a tattoo.

This is problematic for formulators wishing to show equivalence with monomodal aerosols since changes in particle size output modulated by use of cosolvents alone will be insufficient to obtain a match of aerosol deposition profiles.

But they offer a window into why the requirement to obtain an ID can be more problematic than it sounds.

Unfortunately, however, using SCNT to treat everyone with cardiovascular disease and diabetes alone would require several billion (yes billion!) human eggs, and at present, it is proving problematic for researchers to obtain even a limited supply of human eggs for research purposes.