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.
The Nevado Del Huila is a stratovolcano in the Andean volcanic arc. It is standing at an elevation of 17,598 feet, making it the sixth tallest mountain of Colombia. Due to volcanic activity in the few recent years, the mountain has been marked a red alert zone with the risk of future eruptions.