Carbon dioxide (CO 2) is usually pumped as a liquid, usually below 5Â°C (41Â°F) and a pressure of about 50 bar. The solvent is pumped as a liquid as it is then almost incompressible; if it was pumped as a supercritical fluid, much of the pump stroke would be used up in compressing the fluid, rather than pumping it.
The word lice is plural for louse. Head lice are spread by personal contact or the sharing of combs, brushes, caps, and other clothing. Head lice are a common problem with preschool and schoolchildren. Head lice cause a tickling feeling of something moving in the hair, itching, and sores on the head.
How to check for head lice: identifying live lice and nits. First, you need to make sure that you have lice and not dandruff or something else. Checking for lice means you are going to examine the infested personâs scalp and hair and try to see with the naked eye some adult lice, nymphs or head lice eggs.its are the eggs of head lice. They are quite hard to see and are often mistaken as droplets of hair spray or dandruff. Nits are firmly attached to the hair shaft and takes about one week to hatch. Nits hatch to form nymphs, which are small head lice.