The semiquantitative slide agglutination and single-tube Widal tests had positive predictive values (PPVs) of 25.0% (95% confidence interval, CI: 0.6–80.6) and 20.0% (95% CI: 2.5–55.6), respectively.

In the moment when I looked into the cave a little elfin starfish hung down, suspended by the merest thread, perhaps by only a single tube foot.

Numerical analyses and experiments were carried out to obtain the evaporating heat transfer characteristics of falling film on horizontal heated single tube and tube arrays.