Intestinal Waves Move Food To and Fro

Backward waves move cells forward

dvancing cells periodically pull on their substrates to test the environment, say Grégory Giannone, Michael Sheetz (Columbia University, New York, NY), and colleagues. The actomyosin contractions both strengthen attachments to more solid substrates, and break off part of a signaling complex so that it can be carried into the cell. Once that retrograde signal reaches myosin, which is some distan...

To and fro between tableaus and automata for description logics

To move or not to move.

Semaphorins were discovered 11 years ago as molecular cues for axon guidance that are conserved from invertebrates to humans. More than 20 semaphorin genes have been identified in mammals and their protein products are now known to be involved in a range of processes from the guidance of cell migration to the regulation of the immune response, angiogenesis and cancer. Plexins, either alone or i...

Elitist identification of stops fro

We present a set of strong cues for stop place of articulation, based upon formant transition slopes. This set complements a first one defined from stop bursts. Strong cues, which identify or eliminate a phonetic feature with certainty (no error is allowed), are not systematically fired. They can be exploited in language learning (cue enhancement) or in ASR to reduce the search space during the...

Irradiation’ and its Potential to Food Preservation

In spite of the technologies developed during the last decade, the level of food loss is still high and is reported in many countries. According to the United Nations, more than 30 per cent of the mortality rate world-wide is caused by alimentary diseases. The desire of most countries to make food safer for consumption requires better food preservation and production techniques. In this regard,...