Sentence examples for been demonstrated before using from inspiring English sources

A free-standing silicon plate with integrated porous silicon layers necessary for realization of this concept has been demonstrated before using a SOI process [16].In the final optical setup, the system is placed in a closed chamber with input and output orifices for gas or liquid and optical input/output fibers.

Functional divergence in S. salar duplicates has been demonstrated before using Ka/Ks ratios (Leong et al. 2010).

The influence of NADPH depletion on genes involved in sulfur assimilation has been demonstrated before by using the electron acceptor acetoin [ 49].

The behavioral response in which crayfish prefer to remain close to a familiar animal has been demonstrated before in C. destructor using chemical cues [10].

The ability of MRI to accurately stage rectal cancer (Brown et al, 1999; Beets-Tan et al, 2001), define the potential mesorectal circumferential margin (Brown et al, 1999) and predict CRM involvement (Beets-Tan et al, 2001) has been demonstrated before and supported its use in the initial staging of patients in our study.

This has not been demonstrated before.

This integrated approach has not been demonstrated before.

The feasibility of this approach has been demonstrated before.

This has never been demonstrated before.

This has also been demonstrated before [ 52- 55].

This finding has never been demonstrated before.