First things first. Bronchial spasms are of 2 different types --- acute and paradoxical . As a 2005 publication by Rosalind Franklin University of Medicine and Sciences, North Chicago reveals, acute bronchial spasm occur following the sudden constriction in the muscle walls of the lungs. These type of acute spasms are dangerous, as they can lead to the production of mucus which can irritate and block the airway even further, making breathing more difficult.
datum â(plural data or datums) ( 1 plural: data) A measurement of something on a scale understood by both the recorder (a person or device) and the reader (another person or device). ( 2 plural: data) (philosophy) A fact known from direct observation. ( plural: data) (philosophy) A premise from which conclusions are drawn.
By Amanda Briney, Geography Intern. A geodetic datum is the tool used to define the shape and size of the earth, as well as the reference point for the various coordinate systems used in mapping the earth. Throughout time, hundreds of different datums have been used-each one changing with the earth views of the times.ithin the World Geodetic System (WGS), there are several different datums that have been in use throughout the years. These are WGS 84, 72, 70, and 60. The WGS 84 is currently the one in use for this system and is valid until 2010. In addition, it is one of the most widely used datums around the world.