Sentence examples for odour substances from inspiring English sources

The specific limit in the exit gas in our test was set at 0.1 ppm for H2S and 1 ppb for the other sulfur-containing odour substances.

However, MOF only absorbs the sulfur-containing odour substances, but can not convert them, which behave the similar mechanism like active carbon.

In fact, among the odour substances, H2S is often the main and most often seen chemical causing the un-comfortable feeling and needs control first [5, 9, 10, 11].

Preliminary observations indicate that certain types of traps and odour substances will also attract mechanical vectors of trypanosomosis, such as tabanids and stable flies.

Each odour substance was presented to the subjects four times, twice at each nostril using a balanced experimental design.

The cuckoopint (Arum maculatum), which has a metabolic level unequaled among plants, spreads its odour over a wide area by an elevation of temperature that increases the vaporization rate of the volatile odour substance.

Other South American orchids, nectarless but very fragrant, are visited by male bees (Euglossa species) who, for reasons not yet understood, collect from the surface of the flowers an odour substance, which they store in the inflated parts of their hindlegs.

The moisture dissolves microscopic particles that the air has carried into the nose from odour-emitting substances, and the particles dissolved in the fluid stimulate the olfactory nerve cells chemically.

Cats can distinguish the odour of nitrogenous substances (e.g., fish) especially keenly.

The effect of aging on the sense of smell has not been precisely determined because this sense is extremely difficult to assess quantitatively; in addition, smoking and exposure to occupational odours and noxious substances in the air influence sensitivity to smells.

The animal is named for the musky odour of a yellowish substance produced by perineal glands.