Search results
Results from the WOW.Com Content Network
[citation needed] He used about 1,500 US gallons (5,700 L) of urine [4] to produce just 120 grams of phosphorus. If he had ground up the entire residue he could have obtained many times more than this (1 litre of adult human urine contains about 1.4g of phosphorus salts, which amounts to around 0.11 grams of pure white phosphorus).
Phosphorus is a finite (limited) resource that is widespread in the Earth's crust and in living organisms but is relatively scarce in concentrated forms, which are not evenly distributed across the Earth. The only cost-effective production method to date is the mining of phosphate rock, but only a few countries have significant commercial reserves.
In phossy jaw patients, the forensic evidence suggested the conversion of yellow phosphorus to potent amino bisphosphonates by natural chemical reactions in the human body. Yellow phosphorus has a simple chemistry; when combined with H 2 O and CO 2 molecules from respiration and some amino acids such as lysine, bisphosphonates result. [4]
Year of discovery Name of the drug Year when the synthesis mechanism was developed Year that was Patented Governmental approval Patented expired 1901: Adrenaline: Jōkichi Takamine, 1901: 1901: 1901: N/A (Natural Hormone) 1906: Oxytocin: Discovered by Henry Hallett Dale, synthesized by Vincent du Vigneaud in 1952: 1925: 1926: N/A (Natural ...
Elixir sulfanilamide Elixir sulfanilamide caused mass poisoning in the United States in 1937 causing 105 adults and children's death'sList of human-made mass poisoning incidents 1998 Delhi oil poisoning 60 people died in 1998 in Delhi after consuming adulterated mustard oil List of human-made mass poisoning incidents
Its discovery is generally believed to have originated in India around the 4th century AD, [65] although Singaporean mathematician Lam Lay Yong claims that the method is found in the Chinese text The Nine Chapters on the Mathematical Art, from the 1st century AD. [66] 60 AD: Heron's formula is discovered by Hero of Alexandria. [67]
Yushō disease; mass poisoning resulting from rice bran oil contaminated with polychlorinated biphenyls in Kyūshū killed more than 500 humans and 400,000 chickens. 1971, Iraq. Iraq poison grain disaster: A mass poisoning by grain treated with a methylmercury fungicide which was imported to the country as seed and never intended for human ...
The history of poison [1] stretches from before 4500 BCE to the present day. Poisons have been used for many purposes across the span of human existence, most commonly as weapons, anti-venoms, and medicines. Poison has been heavily studied in toxicology, among other sciences, and its use has led to several technological innovations.