Sentence examples for mixtures are difficult from inspiring English sources

Since plastic mixtures are difficult to recycle because of their intrinsic characteristics, separation of mixed plastics is the key problem for recycling.

Multiple routes of exposure and chemical mixtures are difficult to estimate.

The separation of aromatic aliphatic liquid mixtures is difficult perform in a satisfactory technico-economic manner by conventional methods, such as extractive distillation, azeotropic distillation, or liquid liquid extraction.

Studying the combined effects of mixtures is difficult whether it involves toxicologic experiments with laboratory animals, field studies of contaminated habitats, or epidemiologic investigations of naturally occurring populations.

Identification of the lowest effective doses for reproductive toxicity of PCB mixtures is difficult because a variety of reproductive and developmental effects have been reported in several species using different commercial mixtures.

However, exchanges inside the spray mixture are difficult to express as combined mass and heat are transferred between phases, resulting in difficulties for the design of spraying systems.

As can be seen, the position of the different peaks in Figures 6A- 6C is constant also for composite samples, though the peaks in the oil-biodiesel mixture are difficult to resolve because of overlapping of components and widening of peaks imposed partly by the WinDXP ILT algorithm.

This type of mixture is difficult to compact completely with asphalt rubber.

As stated in McLachlan and Peel (2000) choosing the number of components for a mixture is difficult.

The actual number of the cells containing the linear DNA in the reaction mixture is difficult to predict.

Identification and quantification of the glycans in this mixture is difficult, and structural isomers of several glycans make discrimination even more challenging [ 7– 9].