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A paper bundle is a quantity of sheets of paper, currently standardized as 1,000 sheets. A bundle consists of two reams or 40 quires. As an old UK and US measure, it was previously equal to 960 sheets. [9] When referring to chipboard, there are two standards in the US. In general, a package of approximately 50 pounds of chipboard is called a ...
Ricin (/ ˈ r aɪ s ɪ n / RY-sin) is a lectin (a carbohydrate-binding protein) and a highly potent toxin produced in the seeds of the castor oil plant, Ricinus communis.The median lethal dose (LD 50) of ricin for mice is around 22 micrograms per kilogram of body weight via intraperitoneal injection.
The hundredweight has had many values. In England in around 1300, different hundreds (centum in Medieval Latin) were defined. The Weights and Measures Act 1835 formally established the present imperial hundredweight of 112 pounds (50.80 kg). The United States and Canada came to use the term "hundredweight" to refer to a unit of 100 pounds (45. ...
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The most famous case of ricin poisoning was in 1978 when dissident Bulgarian writer Georgi Markov was killed when an assassin in London jabbed him with an umbrella that injected a tiny ricin ...
A woman was sentenced to about 22 years in prison on Thursday for sending threatening letters, containing homemade ricin, in September 2020, to then-President Donald Trump at the White House, the ...
It can serve as a biomarker of ricin poisoning. [3] [4] It was first isolated from the castor seeds by Tuson in 1864. [5] [6] Ricinine has insecticidal effects. [7] It sublimes between 170 and 180 °C at 20 mmHg. It does not form salts, and is precipitated in iodine or mercuric chloride solutions, but not in Mayer's reagent. [5]
A Canadian woman was sentenced to nearly 22 years in prison in Washington Thursday in the mailing of a threatening letter containing the poison ricin to then-President Donald Trump at the White House.