Magma wagging and whirling: excitation by gas flux

High excitation ISM and gas

An overview is given of ISO results on regions of high excitation ISM and gas, i.e. H ii regions, the Galactic Centre and Supernovae Remnants. IR emission due to fine-structure lines, molecular hydrogen, silicates, polycyclic aromatic hydrocarbons and dust are summarised, their diagnostic capabilities illustrated and their implications highlighted.

Whirling skirts and rotating cones

Steady, dihedrally symmetric patterns with sharp peaks may be observed on a spinning skirt, lagging behind the material flow of the fabric. These qualitative features are captured with a minimal model of traveling waves on an inextensible, flexible, generalized-conical sheet rotating about a fixed axis. Conservation laws are used to reduce the dynamics to a quadrature describing a particle in a...

Diffuse gas condensation induced by variations of the ionizing flux

The variation of an ionizing flux as a mechanism to stimulate the condensation of a diffuse gas is considered. To illustrate this effect, two situations are examined: one on the context of pregalactic conditions, and the other on the context of the actual interstellar medium. We focus our attention on flash-like variations; that is, during a “short” period of time the ionizing flux is enhanced ...

Asymmetric tail - wagging responses by dogs to different emotive stimuli

stimulus. Rich opportunities exist for further exploration of correspondences between behaviour, TMS and other physiological measures. Little is known at the single-neuron level about the mechanisms mediating TMS effects. One recent study by Klaus Funke and colleagues reported that a single highintensity TMS pulse applied to V1 neurons produced a temporal sequence of initial suppression of neur...

Salmonid Whirling Disease