USEC's plant, built in the 1950's, uses a method called gaseous diffusion, in which uranium, converted to gaseous form, is forced through a barrier, with one type slightly more likely to pass through than the other.
Unfortunately, many of these fuels contain significant quantities of chlorine which principally converts to gaseous HCl during combustion or gasification.
So until now, getting the gas to market has involved cooling it enough to liquefy it, shipping it in special tankers, and converting it back to gaseous form at the destination which is expensive and capital-intensive.
The C N ratio decreases during composting, as organic carbon is converted to CO2 by degraders and lost in its gaseous phase, whereas the nitrogen is converted to other forms by organisms.
The more volatile components i.e., those with the lower boiling points—are converted to a gaseous state and exit the pot through a cooling tube, called a condenser, that is located above the pot.
What it undergoes is a phase change -- the transformation from liquid to gaseous form.
Slated for completion in winter 2007, the terminal will feature three double-walled, 100-foot-tall storage tanks and 16 vaporizer modules to return the LNG to gaseous form.
As a comet approaches the sun, it's heated by solar radiation -- and material on its surface changes directly from solid to gaseous form.
The crystalline drug is converted to an amorphous form.
