Valerian (herb) particular binding site. Hydrophilic extractions of the herb commonly sold over the counter, however, probably do not contain significant amounts of isovaltrate. Valerenic acid in valerian stimulates serotonin receptors as a partial agonist, including 5-HT which is implicated in the sleep-wake cycle. The chief constituent of valerian is a yellowish-green to brownish-yellow oil present in the dried root, varying in content from 0.5 to 2.0%. This variation in quantity may be determined by location; a dry, stony soil yields a root richer in oil than moist, fertile soil. The volatile oils that form the active ingredient are pungent, somewhat reminiscent
Valerian Albanov later discovered and named Vize Island. In 1975, Arctic expert William Barr wrote, ""The name of Valerian Ivanovich Albanov must be ranked among those of the immortals of polar exploration."" A glacier in October Revolution Island, in the Severnaya Zemlya group has been named after Valerian Albanov. A Russian expedition in September 2010, following the route of the crew members left behind, found some remainders of them: a human skeleton, a watch, snowshoes, a knife, a spoon with a sailor's initials, and sunglasses made from empty rum bottles' glass in the shores of Franz Josef Land. Valerian Albanov Valerian Ivanovich