A mixture of nine cerebrosides and a monoacylmonogalactosylglycerol were separated from the leaves of Clinacanthus nutans. The structures of the cerebrosides were characterized as 1-O-beta-D-glucosides of phytosphingosines, which comprised a common long-chain base, (2S,3S,4R,8Z)-2-amino-8(Z)-octadecene-1,3,4-triol with nine 2-hydroxy fatty acids of varying chain lengths (C(16), C(18), C(20-26))...

BACKGROUND: The study of the seasonal variation of disease is receiving increasing attention from health researchers. Available statistical tests for seasonality typically indicate the presence or absence of statistically significant seasonality but do not provide a meaningful measure of its strength. METHODS: We propose the coefficient of determination of the autoregressive regression model fi...

by the Greeks, the ' word akantha meaning thorn, thistle, or spine. Of some of the stylized ornaments it is rather . difficult to say whether they were fashioned after one of the thistles, the Acanthus spi: nosus and mollis, or were just imaginary designs. Many thistle-like ; plants, for instance cer? : tain species of silybum, carduus, and cirsium, The Acanthus spino, were known to grow of Dio...