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Hyperbaric oxygen therapy or HBOT.
This treatment involves placing the patient in a chamber breathing 100% oxygen at a pressure of more than one atmosphere (the normal pressure the atmosphere exerts at sea level). The increased pressure forces more oxygen into the blood.
People who, for various reasons, have trouble breathing can get oxygen more easily in a hyperbaric (which is to say, high pressure) chamber. There are also a number of diseases for which an excess supply of oxygen may be helpful.
Pressure eualization chamber
Chamber pressure is determined by the cartridge, not the rifle.
A hyperbaric chamber is a special chamber that they put divers into to help them cure something they can get from diving called "The Bends". When you put the diver in the chamber it increases the pressure surrounding the diver's body. The high pressure forces forces the gas bubbles to re-dissolve back into the blood and tissues. By very slowly decreasing the pressure back to normal, the gas in the persons body slowly escapes.
The left ventricle
An external oxygen delivery system would consist of an oxygen source (such as a pressurized gas chamber), a pressure relieving system and a delivery system such as a breathing tube.
Chamber pressure is dertmined by the cartridge. The max standard pressure for .223 is set by SAAMI at 55,000 PSI.
Aneroid barometer is an airtight metal chamber that is sensitive to changes in air pressure
A gas pycnometer operates by detecting the pressure change resulting from displacement of gas by a solid object. Expanding a quantity of gas at known pressure into an empty chamber and measuring the pressure establishes a baseline.Then a sample is placed in the chamber and the chamber is resealed. The same quantity of gas at the same pressure is again expanded into the sample chamber, and the pressure is measured. The difference in the two pressure combined with the known volume of the empty sample chamber allows the volume of the sample to be determined by way of the gas law. --GOLD APP INSTRUMENTS
After HBOT is complete, a period of decompression in the chamber is required until the pressure in the chamber is equal to the pressure outside. Serious complications can occur if decompression occurs suddenly.