Sentence examples for often been demonstrated from inspiring English sources

The rationale of lava flow deviation is to prevent major damage, and, among the possible techniques, the opening of the flow levées has often been demonstrated to be suitable and reliable.

PRF's clinical effectiveness has often been demonstrated in pre-clinical and clinical studies; however, it is still controversial whether growth factors are significantly concentrated in PRF preparations to facilitate wound healing and tissue regeneration.

While this protection has most often been demonstrated in monkeys challenged with homologous virus (a SIV strain that matches the vaccine insert), an HIV vaccine will need to protect against the wide diversity of circulating clades of HIV.

Severe antisocial behavior has often been demonstrated to be associated with low intelligence [ 94, 95].

The manual assessment of sperm motility has often been demonstrated to be highly variable [ 46] and bias due to differences between the four technicians that performed manual motility counting at the four study sites is a concern.

This is surprising considering the fact that phenotypic plasticity in overall brain size, in addition to the size of different brain regions, has often been demonstrated [e.g. seasonality: [ 20, 21]; spatial learning: [ 22, 23], environmental heterogeneity: [ 24, 25]].

In these cases it can often be demonstrated by DNA sequencing that the host with the mildest form of the disease is the original host both parasite and host evolve toward a less noxious form of interaction (p. 358).

That behavior all too often is demonstrated through the systematic subjugation and degradation of women and girls in physically demeaning, humiliating, and frequently ultra-violent ways.

Joined by Kennedy, who often plays the swing vote, the liberal justices ruled that someone suing under fair housing law doesn't need to prove that a developer or the government knowingly discriminated -- only that the policy had a disparate impact, something that can often be demonstrated with statistics.

Consequently, what can only be inferred from real-world data can often be demonstrated with vector-world data.

It is the latter costs that often are demonstrated for vertebrates and invertebrates in response to challenges from parasites or surrogates of parasitism (for invertebrates, insertion of a nylon filament or injection of Lipopolysaccharides in solution) [ 11, 12].