I managed to bond a neurotransmitter involved with memory to an opiate, and was surprised when the compound proved stable.

For example, if the product proves less stable than had been anticipated it may be necessary to shorten the intervals between examinations.

The ammonia molecule had already been proposed as such but Essen was convinced that caesium would prove more stable.

As a definition, this has proven stable, but its interpretation has varied.

The stealth type has proved relatively stable from a maintenance standpoint.

But the Mexican government proved less than stable, with 13 presidents in 15 years.

Yet it has proved more stable than any other 20th-century system in Europe.

Multiparty democracy, with parties of opposition aspiring to come to power at the next election, did not prove viable or stable.

The committee was to prove stable, with nine of the original members were still serving in 1857.

Both sequences proved remarkably stable among the descendants of these scripts.