String notation for capturing the entire experimental processes of chemistry

A string notation which is inspired by [SMILES](http://pubs.acs.org/doi/abs/10.1021/ci00057a005) notation in chemistry can be devised for capturing entire chemistry experimental and methodological sequences and processes. Laboratory experimental procedures are often described as flowcharts, whic...

By Matthew MacLennan

On the Impossibility of Aggregating Individual Cloud Accretion Rates

The rate of accretion onto the Milky Way (MW) by an individual cloud (or satellite) can be written as dM/dt = M v / R, where M is the cloud mass, v the cloud velocity toward the MW, and R is the distance from the cloud to the MW. Over the time t = R / v a mass M will accrete. This rate can be ev...

By Joshua Peek