Sentence examples for is 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.

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

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

The matter of conditional release is that notable amount of materials, mainly metals, is usually contaminated only by radionuclids with relatively short time of half decay.

The vector b is usually contaminated by an unknown error e generating from measurement error, which often called the vector e as ''noise''.

Commercial talc is usually contaminated with other minerals.

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

Neandertal skeletal remains are usually contaminated with modern human DNA derived from handling and washing of the specimens during excavation.

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.

Such samples are usually contaminated with drilling fluid filtrate that saturates the rock adjacent to the wellbore, but a guarded probe can eliminate this contamination.

Biomedical signals are usually contaminated by noise generated from sources such as power line interference and disturbances produced by the movement of the recording electrodes.