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Cerca de 30% das espécies do grupo de sapos, rãs e pererecas sofrem ameaça de extinção, já tendo sido extintas 35 dessas espécies. Por apresentarem pele fina e permeável e, na maioria dos casos, fase larval que v...

Current quality control patterns are limited to industrial application, for most the natural chemical reference substances are expensive and unavailable. Here in, quantitative analysis of multi-components with single mar...

The saponified petroleum ether extract (SPE) of the Annona reticulata L. bark were studied for fatty acid composition by GC-MS analysis. Six fatty acids amounting 86.68% of the total contents were identified. The compo...

Oral administration to rats of Rhizoma Paridis saponins (RPS) from Paris polyphylla var. yunnanensis extracts have been found to show strong anti-tumor activity, but the effective constituents were not known. To detail...

We study the dynamics of an asymmetric intruder in a glass-former model. At equilibrium, the intruder diffuses with average zero velocity. After an abrupt quench to T deeply under the mode-coupling temperature, a net ave...

Bulbs of Fritillaria ussuriensis Maxim., usually known as Bulbus Fritillariae ussuriensis, (BFU) has been used as antitussive, antiasthmatic and expectorant in traditional herbal medicine. In this study, the aqueous extr...

Twelve compounds were isolated from the rhizoma of Paris polyphylla Smith var. pubescens Handel-Mazzetti. Based on spectral data, the isolated compounds were identified as stigmasterol (1), β- Ecdysterone (2), Diosgenin...

Chiliotrichum diffusum (Asteraceae), "mata negra", habita el sur de Argentina. Se han descripto usos étnicos rituales y medicinales de la especie. Las partes aéreas evidenciaron la presencia de flavonoides, taninos, ...