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 County, officially the County of El Dorado, is a county located in the U.S. state of California. As of the 2010 census, the population was 181,058. The county seat is Placerville. El Dorado County is included in the Sacramento-Roseville-Arden-Arcade, CA Metropolitan Statistical Area. It is located in the historic Gold Country in the Sierra Nevada.