Sentence examples for rich periods from inspiring English sources

However, by periodically introducing rich periods (periodic operation) the activity can temporarily be restored and the surface composition can be kept close to the optimum, leading to an overall improvement of the oxidation rate.

It is demonstrated that the N2O can be emitted during both lean and rich periods, with varying ratio depending on the considered reducer and the temperature of gas.

This procedure aimed at investigating the influence of the exposure conditions and therefore the lean and rich periods were kept equally long (5 min).

Generally, the introduction of short rich periods to a slightly lean mixture (lean rich cycling) seems to be more efficient than the corresponding rich lean cycling since the latter suffers from oxygen deficiency limiting the reaction during the long periods.

But to burn cleanly, the ratio must stay within 1percentt of stoichiometric, and most cars cannot do that as the engine speed changes rapidly; they go through brief periods of lean air, which causes engine hesitation, hotter combustion and production of nitrogen oxides, or rich periods, which hurt fuel economy and result in carbon monoxide and unburned hydrocarbons.

"Whatever my problems, it was a very rich period of my life," Ms. Buechner said.

The film should have an especially rich period between now and Sunday.

The novel is full of rich period detail: tearaway evacuees, boozy BBC broadcasters and army types.

But we are also in a truly rich period for enormous smash hit singles".

All the more reason he relished "The Heiress" and its rich period dress.

After a rich period of growth, they are facing tougher times.