Disc population synthesis: Decrease in the solid mass reservoir through pebble drift

Observation of mass transport through solid 4He

Pattern Formation through Genetic Drift at Expanding Population Fronts

We investigate the nature of genetic drift acting at the leading edge of range expansions, building on recent results in [Hallatschek et al., Proc. Natl. Acad. Sci., 104(50): 19926 19930 (2007)]. A well mixed population of two fluorescently labeled microbial species is grown in a circular geometry. As the population expands, a coarsening process driven by genetic drift gives rise to sectoring p...

1 Heat and Mass Flow Through the Bulkhead in the Drift Scale Test

comparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.

heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...

Population Synthesis in the Galaxy: the Radial Structure of the Stellar Disc

Picture ABSTRACT The Besann con model of population synthesis of the Galaxy has been built as a tool to constrain our knowledge of the Milky Way. It allows to compare predictions of evolution scenarii with photometric and astrometric observations (Robin and Cr ez e, 1986, Bienaym e et al., 1987). This model has been used to determine the scale length of the stellar disc (found to be 2.5 kpc) an...