Sentence examples for chemicals are difficult from inspiring English sources

The chemicals are difficult to use, difficult to obtain, and require liability insurance and extensive site inspections.

First, LD studies aiming to estimate kelim of slowly eliminating chemicals are difficult to perform because subjects must be tracked over several years, and fasting to eliminate background exposure is not feasible.

We do not know if agricultural chemicals pose a risk to Buff-breasted Sandpipers and in general the magnitude of risk to birds posed by currently used agricultural chemicals is difficult to quantify.

However, the determination of Kow for extremely lipophilic chemicals is difficult, and reported results can cover a large range of values.

A quantitative comparison of the relative importance of the liver and bladder to activate the chemicals is difficult to make but the data indicate the ability of the bladder epithelium to activate bladder carcinogens.

For the training set, both the co-occurrence based approaco-occurrence basedbapproachroand may have conthebuted to the fact that approximately half of the target chemicals were difficult to curate (<70%), in particular aspartame, as shown in Figure 6—thapproachhe co-occurrence relations may not be thaveey points in whicontributedors are intoresthe.

Associations with a single chemical are difficult to interpret because of concomitant exposures to other POPs, although adjustment for multiple exposures may be imprecise because exposures can be strongly correlated due to similar exposure routes.

The liquid chemical is difficult to handle because it reacts violently with water, and in air it catches fire spontaneously, sometimes exploding.

The chemical is difficult to work with because it is unstable and corrodes piping; assuring a steady supply would mean building a whole new production line, Mr. Aumonier said, which the company declines to do.

I am able to support the proposals concerning bans on the use of carcinogenic and other poisonous substances in detergents, and I am also able to support the supplementary proposal to the effect that the ban should include those chemicals that are difficult to break down, together with hormone-disturbing chemicals.

The requirement was to produce for immediate use small amounts of chemicals that are difficult to ship and to store, and to mass-produce microcomponents.