Sentence examples for has demonstrated a constant from inspiring English sources

However, even with judicious prescribing of antibiotics, a century's worth of experience has demonstrated a constant struggle to find new methods to combat bacteria, as bacteria evolve new mechanisms to resist current drugs.

These studies have demonstrated a nearly constant transcriptome profile during stress with only small changes in transcript levels [ 27].

Pure cement paste and fiber-reinforced concrete have demonstrated a stable dielectric constant under the same fabrication conditions.

Studies in critically ill patients [ 19, 20] have demonstrated a predictable and constant offset time, with little or no accumulation of drug over time.

Quantitative parameters such as the transfer constant (Ktrans) have demonstrated a prognostic value.

In summary, we have demonstrated a molecular prototype that displays a singlet decay time constant of more than one hour in a room-temperature liquid.

Generally, history has demonstrated that presidential powers have a constant and evolving ebb and flow.

Previous work has demonstrated, however, that subjects have a relatively constant internal reference and that they do not regard this task as difficult.

This gene remained unchanged in the array (P = 0.998) and previous work has demonstrated that its expression levels remained constant in holothurian intestines during regeneration [25].

Further, a recent study has demonstrated that 1H NMR transverse relaxation time constants (T2) distinguishes proton signals from collagen, collagen-bound water, and pore water [5].

Previous work has demonstrated that expansin family sizes remain relatively constant among species even when the individual genes have a distinct evolutionary history [ 17, 18].