Sentences with phrase «less effective barrier»

Equivalent winds in the north provide a less effective barrier because they are deflected by mountains.

That could also make them a less effective barrier.

Not exact matches

Researchers note that while PCI - aided delivery of chemotherapy to the brain has proven effective in laboratory tests, additional testing prior to human clinical trials is needed to identify other less - toxic blood - brain barrier agents to be used in tandem with the photosensitizer in the PCI process.

Wetting your face first just allows the water to act as a barrier between the grime and the cleansing agents, rendering them less effective.

The ability to cross the blood - brain barrier makes them very effective, but also increases the risk of adverse effects when compared to less effective second - generation antihistamines.

At the time the most important art journal of France, L'Artiste, in its issue of March 12, 1848, extolled the «genius of liberty» which had revived «the eternal flames of art» (obviously it had been less effective in reviving the rhetorical power of its writers), and the next week, Clément de Ris, writing in the same periodical, while slightly chagrined by the mediocrity of the first «liberated» Salon, nevertheless maintained that «in the realm of art, as in that of morals, social thought and politics, barriers are falling and the horizon is expanding.»