Whatever the airlines' revamped meal policies have done to shrink passengers' waistlines, they have had a perceptible impact on the carriers' bottom lines.

It argued that Africa had hardly benefited from Bank programmes: though exports had improved, there had been no perceptible impact on growth or inflation, and investment had suffered.

Less perceptible but far more important - the impact had changed the asteroid's rotation.

Observers from Norway are already stationed in Hebron, but their presence has not made a perceptible impact.

Love affairs begin and end (unsatisfactorily in both cases), but without perceptible impact.

So far, the change has had little perceptible impact on stock prices.

"This by itself is unlikely to have a perceptible impact on the economy," commented Sam Nakagama of the economic forecasting firm of Nakagama & Wallace.

Does this mean that theater has a perceptible or quantifiable impact on the issues raised?

She did, but her skinny legs had no perceptible impact.

"It doesn't look like there has been any perceptible impact," Esler said.