Sentence examples for usually contaminated from inspiring English sources

The main source of infection is usually contaminated food or water (9 – 13 ), while the usual mode of transmission is direct person-to-person contact with saliva, vomit, or aerosols.

APT may also be reduced by carbon, although the powder is usually contaminated with tungsten carbide and some mineral elements contained in the carbon.

It is widely dispersed in natural deposits, which are usually contaminated with oxygen, magnesium, aluminum, and silica; their chromium content varies from 42 to 56 percent.

Furthermore, the measured data is usually contaminated by background noise of an arbitrary distribution type.

As data are usually contaminated with noise in practice, a robust model is desirable.

Nowadays, the substrates used for culturing mushrooms from plants, such as sawdust, corncob and wheat bran, are usually contaminated.

However, the metallic particle impurities usually contaminate the CNTs, and are difficult to remove without introducing defects and contaminations.

This process usually contaminates the CNTs, deteriorating their unique material properties.

Aspergillus section Nigri is a heterogeneous fungal group including some ochratoxin A producer species that usually contaminate raisins.

The objectives are to ensure conservation of reacting species by elimination of the spurious term that usually contaminates a CMC solution and to obtain convergence on a coarser grid than is usually required in CMC.

These organism usually contaminate the food product and synthesize the toxins as metabolites in the presence of high levels of carbohydrates and low levels of protein (Essono et al. 2009).