Jorge, Castellanos,1,∗ Xyoli Pérez-Campos,2 Raúl Valenzuela,2 Allen Husker2 and Luca Ferrari3 1Posgrado en Ciencias de la Tierra, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico 2Departamento de Sismologı́a, Instituto de Geofı́sica, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico. E-mail: [email protected] 3Centro de Geociencias, Universidad Nacional Au...

Many turtle species are endangered through a variety of human activities, from beach development, boating and shipping, and fishing. Awareness of the problems has mostly focused on protection of beaches used for breeding as individuals return to highly specific sites where they are particularly vulnerable. Apart from their breeding sites, much less is known about their long and complex movement...

We study front propagation problems for forced mean curvature flows and their phase field variants that take place in stratified media, that is, heterogeneous media whose characteristics do not vary in one direction.We consider phase change fronts in infinite cylinders whose axis coincides with the symmetry axis of the medium. Using the recently developed variational approaches, we provide a co...

We describe protocols for the fabrication of microfluidic devices in plastics using a number of different embossing masters. Masters were fabricated by deep reactive ion etching (DRIE) of silicon (100), wet etching of silicon (100) and (110), and SU-8 processing. Structures embossed into a cyclo-olefin polymer were characterized in terms of the quality of pattern transfer as well as of the surf...

Does R&D have an impact on the economic performance of an enterprise? To most economic observers, the obvious answer is yes. However, recent reports by Booz-Allen-Hamilton (BAH 2006, 2007) conclude that the share of spending devoted to research has no relationship to firm growth, profits, and value, and offers support to the view that it is possible to compete successfully in the modern economy...

We consider the Allen-Cahn equation ε∆u + u− u = 0 in Ω, ∂u ∂ν = 0 on ∂Ω, where Ω is a smooth and bounded domain in R such that the mean curvature is positive at each boundary point. We show that there exists a sequence εj → 0 such that the Allen-Cahn equation has a solution uεj with an interface which approaches the boundary as j → +∞.

The authors of "Relatedness, Conflict, and the Evolution of Eusociality" respond to objections raised by Martin Nowak and Benjamin Allen.

With a very long history, traditional Chinese medicine (TCM) has a rich knowledge about human health and disease by its special way. To avoid losing lots of precious knowledge of TCM masters, endeavors have been engaged to keep down those knowledge of TCM masters, such as their growth experiences, effective practical cases toward sickness and typical treating methods and principles. In this pap...