Because of its observational nature, our study cannot differentiate between intrinsic or extrinsic factors in the reduced reproductive success. |
No spatial stretching occurs, yet many of the observational tests of a cosmological model are verified. |
The Hubble Deep Field images have made some of the greatest impacts on observational cosmology so far. |
The results were derived from a 3.5 year observational study of median encroachments. |
Shivering was recorded by using both an electromyogram and a 4-point observational scale. |
In observational studies of handwashing, the frequency and quality of hand hygiene are consistently suboptimal. |