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An antiknock agent is a gasoline additive used to reduce engine knocking and increase the fuel's octane rating by raising the temperature and pressure at which auto-ignition occurs.
The hazards of TEL content are heightened due to the compound's volatility and high lipophilicity, enabling it to easily cross the blood–brain barrier. Early symptoms of acute exposure to tetraethyllead can manifest as irritation of the eyes and skin, sneezing, fever, vomiting, and a metallic taste in the mouth.
The practice of death knocks, is often considered to be a negative aspect of journalism, but the exposure it brings has also been shown to sometimes be a comfort to bereaved individuals. [ 2 ] In the United Kingdom , the Independent Press Standards Organisation has laid down guidelines relating to how death knocks are carried out. [ 1 ]
Heptane or n-heptane is the straight-chain alkane with the chemical formula H 3 C(CH 2) 5 CH 3 or C 7 H 16.When used as a test fuel component in anti-knock test engines, a 100% heptane fuel is the zero point of the octane rating scale (the 100 point is 100% iso-octane).
Cross of Saint Peter (Petrine Cross) Peter requested to be crucified upside down, as he felt unworthy to die in the same manner as Christ. Used as a symbol of Saint Peter. A very common display in churches dedicated to Saint Peter. It has also been modernly used as a satanic or anti-Christian symbol. Eye of Horus: Ancient Egyptian religion
Thomas Midgley Jr. (May 18, 1889 – November 2, 1944) was an American mechanical and chemical engineer.He played a major role in developing leaded gasoline (tetraethyl lead) and some of the first chlorofluorocarbons (CFCs), better known in the United States by the brand name Freon; both products were later banned from common use due to their harmful impact on human health and the environment.
Incapacitating agent is a chemical or biological agent which renders a person unable to harm themselves or others, regardless of consciousness. [1]Lethal agents are primarily intended to kill, but incapacitating agents can also kill if administered in a potent enough dose, or in certain scenarios.
The Acts of Peter, of the second half of the second century, expressly distinguishes between the upright beam of the cross and its crossbeam: in this early example of New Testament Apocrypha, Saint Peter, on being crucified, says: "It is right to mount upon the cross of Christ, who is the word stretched out, the one and only, of whom the spirit ...