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In 2015 author and right-to-die advocate Derek Humphry reported that Worthington Industries, the world's largest manufacturer of disposable helium cylinders, had announced that their helium cylinders will guarantee only 80% helium, with up to 20% air, making them inappropriate for use with a suicide bag in Humphry's opinion. [23]
Nitschke described his device as a modification of the exit bag with helium method described in The Peaceful Pill Handbook. Helium was replaced by a cylinder of compressed nitrogen and a regulator to supply the nitrogen into a plastic bag. One advantage of this method was the availability of larger amounts of nitrogen and flow rates last longer.
The method of suicide based on self-administration of helium in a bag, a colloquial name being the "exit bag" or suicide bag, has been referenced by some medical euthanasia advocacy groups. [36] Originally, such bags were used with helium, and 30 deaths were reported with use of them from 2001 to 2005, and another 79 from 2005 to 2009.
A 36" cylinder bore Humphrey pump was installed at Chester, Pennsylvania in 1927 by the Sun Shipbuilding and Dry Dock Company. The pump was used in dry dock operations and also for experimental purposes. It was designed as a 2-stroke engine to operate in a range of head from 20 to 150 ft (6 to 46 m).
A gas cylinder quad, also known as a gas cylinder bundle, is a group of high pressure cylinders mounted on a transport and storage frame. There are commonly 16 cylinders, each of about 50 litres capacity mounted upright in four rows of four, on a square base with a square plan frame with lifting points on top and may have fork-lift slots in the ...
All helium, and some of the oxygen is provided by decanting or boosting from bulk cylinders. The amount of helium that must be decanted is very simple to calculate: Multiply the desired gas fraction of helium (F He) by the total filling pressure (P tot) to get partial pressure of helium (P He). In the case of the Tx 20/40, in a 230 bar cylinder ...
The Humphrey cycle is the thermodynamic cycle occurring detonation engines such as rotating detonation engines, the pulse detonation engines, and pulse compression detonation systems. It may be considered to be a modification of the Brayton cycle in which the constant-pressure heat addition process of the Brayton cycle is replaced by a constant ...
Gulf Cryo produces and supplies industrial gases namely Acetylene, Air, Argon, Carbon Dioxide, Helium, Hydrogen, Oxygen, and Nitrogen. The company also produces medical gases including Entonox, Medical Air, Medical Carbon Dioxide, Medical Nitrogen, Medical Nitrous Oxide and Medical Oxygen. It also produces Dry Ice. [16]