John scott haldane – wikipedia c gastronomie


Haldane was born in Edinburgh to Robert Haldane, whose father was Scottish evangelist James Alexander Haldane, and Mary Elizabeth Burdon-Sanderson, daughter of Richard Burdon-Sanderson and the granddaughter of Sir Thomas Burdon. His maternal uncle was the physiologist John Scott Burdon-Sanderson. He was the brother of Elizabeth Haldane, William Stowell Haldane and Richard Burdon Haldane, 1st pictures electricity pylons Viscount Haldane.

Haldane was Gifford Lecturer in the University of Glasgow, Fellow of New College, Oxford, from October 1901, [8] and Honorary Professor of the University of Birmingham. Haldane received numerous honorary degrees. He was also President of the English Institution of Mining Engineers, a Companion of Honor of the British Court, a Fellow of the Royal Society, [9] a member of the Royal College of Physicians and of the Royal Society of Medicine.

Haldane helped determine the regulation of breathing, and discovered the Haldane effect in haemoglobin. He was the founder of The Journal gas equations chemistry of Hygiene. In 1907 Haldane made a decompression chamber to help make deep-sea divers safer and produced the first decompression tables after extensive experiments with animals. [2] [11] [12] He was also an authority on the effects of pulmonary diseases, such as silicosis gas apple pay caused by inhaling silica dust. After being forced out of combatting poison gases in World War I, through alleged German sympathies, he shifted into working with victims of gas warfare and developed oxygen treatment including the oxygen tent.

He investigated the principle of action of many different gases. He investigated numerous mine disasters, especially the toxic gases which killed most miners after firedamp electricity jeopardy powerpoint and coal dust explosions. The toxic mixtures of gases found in mines included afterdamp, blackdamp and whitedamp. His description of the way a flame safety lamp can be used to detect firedamp by the increase in height of the flame, and chokedamp by the dying of the flame, is a classic exposition in his textbook, Respiration. Although electronic gas detectors are now used widely in all coal mines, flame lamps are still used extensively for their ease and simplicity of operation. Electronic gas detectors rely on a catalytic chip which can be poisoned by atmospheric impurities.

He identified carbon monoxide as the lethal constituent of afterdamp, the gas created by combustion, after examining many bodies of miners killed in pit explosions. Their skin was coloured cherry-pink from carboxyhaemoglobin, the stable compound formed in the blood by reaction gasco abu dhabi careers with the gas. It effectively displaces oxygen, and so the victim dies of asphyxia. As a result of his research, he was able to design respirators for rescue workers. He tested the ag gaston birmingham 120 effect of carbon monoxide on his own body in a closed chamber, describing the results of his slow poisoning. In the late 1890s, he introduced the use of small animals for miners to detect dangerous levels of carbon monoxide underground, either white mice or canaries. With a faster metabolism, they showed the effects of poisoning before gas levels became critical for the workers, and so gave an early warning of the problem. The canary in British pits was replaced in 1986 by the electronic gas detector.