CHEMISTRY: Small Yet Selective

Inclusive yet Selective: Supervised Distributional Hypernymy Detection

We test the Distributional Inclusion Hypothesis, which states that hypernyms tend to occur in a superset of contexts in which their hyponyms are found. We find that this hypothesis only holds when it is applied to relevant dimensions. We propose a robust supervised approach that achieves accuracies of .84 and .85 on two existing datasets and that can be interpreted as selecting the dimensions t...

Understanding the chemistry of chemical communication: are we there yet?

S molecules often carry vital information. Compounds as simple as nitric oxide, carbon dioxide, and ethylene play essential roles as hormones or pheromones in plants and animals. Extensive research during the past century has revealed that chemical signaling is not only the primary means whereby organisms coordinate and regulate their internal activities, but also the chief channel through whic...

Laser selective chemistry - is it possible ?

[Selective metalation and solid phase organometallic chemistry].

Recently, solid-phase synthesis has been recognized as an important methodology for combinatorial chemistry or automated synthesis directed at drug discovery. Various synthetic methodologies have been applied to solid-phase synthesis, although it appears that organometallic chemistry in this area is still being explored. In solution-phase chemistry, organometallic reagents have been utilized fo...

Water Transporters: How So Fast Yet So Selective?

A high-resolution X-ray structure of an aquaporin has revealed water molecules bound within the transmembrane pore and provided new clues to the mechanisms of rapid water transport and high selectivity in this important class of membrane proteins.