You can identify how much material is wasted in production of products by comparing the weight of materials bought with the product yield.

Researchers try different conditions until they find the best conditions for product yield and purity.

Often variable in product yield.

This process for raising octane is now used to produce much of the world's gasoline, improving product yields and lengthening catalyst life.

Second, very high product yields are usually accomplished without the formation of by-products or the synthesis of cell mass.

Once again this modified network can be modeled to calculate the new product yield.

Chemists also believe that by introducing oscillations into industrial chemical processes, product yields and purity could be improved.

Non-specific reactions can afford low product yields, copious amounts of waste and impure products.

This may lead to increased success with the Demjanov, as it would allow more control in the reaction and increase the desired product yield.

Studies in Europe have shown that widespread field infestations can reduce product yield by up 30%.