The ingredients were largely the same and the only detectable difference was smell.

Those swimming with barnacle encrustation require more energy and show a detectable difference in anaerobic energy expenditure than those without encrustation.

The study saw no detectable difference in all-cause mortality.

Aside from straight black box, where computers faster than mere humans trade on barely detectable differences between prices, there was 'grey box' trading, where there was some human intervention.

Much has been written about so-called 'black box' trading, whereby computers faster than mere humans trade on barely detectable differences between prices.

It had little detectable effect on malleable organs such as the heart, stomach and intestines.

However, the majority of microbial colonists on any given plant have no detectable effect on plant growth or function.

Low air pressure begins to have marginal but detectable effects at the summit (2654.4 m; 8,708.7 ft).

Other possible problems with fiscal stimulus include the time lag between the implementation of the policy and detectable effects in the economy, and inflationary effects driven by increased demand.

According to an industry group, the use of chlorine dioxide in these processes has reduced the dioxin generation to under detectable levels.

About 15% of the samples had detectable levels of dihydro-1,3,5-triazine or a high dicyandiamide concentration.

A test of river water near the spill showed elevated levels of lead and thallium, and barely detectable levels of mercury and arsenic.

The worst affected zones are fenced off; detectable levels of radioisotopes are present in the soil, insects and trees in the surrounding areas.

Ammonia and nitrite should be tested regularly; any detectable levels (i.e., over 0 ppm) can be indicative of a problem.