Liquid nitrogen is fun stuff to play with, as long as you’re careful and avoid freezing your own fingers off and shattering them on the workbench. As the liquid turns to gaseous nitrogen at ...

What if you have a need for liquid nitrogen, but you do not wish to simply order it from a local supplier? In that case you can build your very own pulse tube cryocooler, as [Hyperspace Pirate] is ...

Clinical and Laboratory Data on Patients with Severe Burns. The alpha amino nitrogen concentration was ... were given 1.5 liters of two-year-old liquid plasma in the course of two hours.