Surgicel is a hemostatic agent (blood-clot-inducing material) made of an oxidized cellulose polymer (the unit is polyanhydroglucuronic acid), manufactured by the Ethicon subsidiary of Johnson And Johnson. It was introduced into clinical practice in 1947. It is used to control post-surgical bleeding.
Multi Stage: (More than one level of heating or cooling) Multi Stage heating means that you have two levels of heat in your home. You will perhaps have a furnace and another method of heat like a solar panel. The second level of heat is commonly referred to as an emergency heat setting.
The solution is desalination, a process that removes salt from seawater to make it drinkable, either using a boiling technique called multistage flash or a filtration method known as reverse osmosis. Multi-stage flash uses the same principle as a solar still: as water boils, pure vapour evaporates, leaving salt crystals behind.