The science of NIRS hinges on some of the fundamental principles of pulse oximetry as they relate to the transmission of light through living tissues and the absorption of light by tissue chromophores (naturally occurring compounds that absorb light [e.
U.S. Geological Survey Geographic Names Information System: El Nido, Merced County, California; U.S. Geological Survey Geographic Names Information System: El Nido, Merced County, California. El Nido is a census-designated place in Merced County, California. It is located 15 miles (24 km) west-southwest of Le Grand, at an elevation of 141 feet (43 m), and a population of 160 The population was 330 at the 2010 census. 1 History.
El Dorado is a city in and the county seat of Union County, Arkansas, USA. According to estimates, the 2012 census, the population of the city is 18,491, which represents a decline of 2.1 percent from the 2010 tabulation of 18,884. El Dorado is headquarters of the Arkansas Oil and Gas Commission as well as Murphy Oil, Murphy USA, Deltic Timber Corporation, and the Lion Oil Refinery.