Typhoid Information. General Information. ***************************. Typhoid is a bacterial disease transmitted through contaminated food and water. The risk of Typhoid is thought to be in the region of 1/3,000 to 1/5,000 for the International Traveller to the tropics â especially for those visiting parts of India.yphoid Information. General Information. ***************************. Typhoid is a bacterial disease transmitted through contaminated food and water. The risk of Typhoid is thought to be in the region of 1/3,000 to 1/5,000 for the International Traveller to the tropics â especially for those visiting parts of India.
Nitrogen: historical information. 1  Discoveror: Daniel Rutherford. 2  Place of discovery: Scotland. 3  Date of discovery: 1772. 4  Origin of name: from the Greek words  nitron genes  meaning  nitre  and  forming  and the Latin word  nitrum  (nitre is a common name for potassium nitrate, KNO#).
History. From the Latin word nitrum, Greek Nitron, native soda; and genes, forming. Nitrogen was discovered by chemist and physician Daniel Rutherford in 1772. He removed oxygen and carbon dioxide from air and showed that the residual gas would not support combustion or living organisms.istory. From the Latin word nitrum, Greek Nitron, native soda; and genes, forming. Nitrogen was discovered by chemist and physician Daniel Rutherford in 1772. He removed oxygen and carbon dioxide from air and showed that the residual gas would not support combustion or living organisms.