Sentence examples for has been shown valid from inspiring English sources

The K4b has been shown valid in comparison to Douglas bag method [ 36].

However, this method has been shown as valid elsewhere [ 21].

The CHQ-12 includes 12 items, and has been shown as valid for use with the Chinese population [ 28].

Similarly, the first real-time qRT-PCR studies have generally normalized expression levels to an internal control that is assumed to be valid rather than one that has been shown to be valid by statistical analysis of data.

The onset of convection for a FST boundary has yet to be verified experimentally, although it has been shown to be valid in analogous gas absorption experiments.

The physical model proposed by Guglielmi has been shown to be valid from the present system at low current densities.

This result has been shown to remain valid as long as the innovation between X and Y is Gaussian [9].

This questionnaire has been shown to be valid and reliable in the collection of dietary data [32].

The instrument has been shown to be valid [ 15, 16].

Death recording in THIN has been shown to be valid.

This approach has been shown to be valid [ 46].