Lycium isthmense (Solanaceae), nueva especie del Itsmo de Tehuantepec

A New Species of Rain Forest Canopy Tree from the Isthmus of Tehuantepec, Mexico

Ocotea heribertoi is a remarkable new species from very high precipitation rain forests of the Chimalapa-Uxpanapa region of the Isthmus of Tehuantepec in Oaxaca and Veracruz, Mexico. It sports the largest known globose fruit within this large genus, borne in an unusual cupule, while the combination of vegetative and floral features indicate that it is apparently not closely related to any descr...

New TNM Classification for Lung Cancer Nueva clasificación TNM del cáncer de pulmón

Una Nueva Técnica de Construcción de Grafos Semánticos para la Desambiguación Bilingüe del Sentido de las Palabras

In this paper we present preliminary results obtained by the application of a new technique for building semantic graphs to the task of cross-lingual word sense disambiguation. Through the use of this unsupervised technique, we induce the senses associated with the translations of the ambiguous word in the target language. For this purpose, we use the translation of the words in the context of ...

Systematic Review of Chemical Constituents in the Genus Lycium (Solanaceae).

The Lycium genus is widely used as a traditional Chinese medicine and functional food. Many of the chemical constituents of the genus Lycium were reported previously. In this review, in addition to the polysaccharides, we have enumerated 355 chemical constituents and nutrients, including 22 glycerogalactolipids, 29 phenylpropanoids, 10 coumarins, 13 lignans, 32 flavonoids, 37 amides, 72 alkaloi...

A New Flagelliflorous Species of Stenanona (annonaceae) from Mexico, with a Review of the Phenomenon of Flagelliflory

Stenanona flagelliflora is described as a new species of small, flagelliflorous tree from deep-soil hill rain forests of the Uxpanapa-Chimalapa region of the Isthmus of Tehuantepec, in Veracruz and Oaxaca, Mexico. In flagelliflory, flowers are borne on essentially leafless modified whip-like branches that trail across the ground; this is the first report of the phenonenon for the flora of Mexic...