Industry, sector and description for Universal Display. Universal Display researches, develops, and sells organic light emitting diode (OLED) technologies and materials for the flat-panel display industry.
The first requirement for all master horizons other than O horizons is that they are composed mostly of mineral material. It is very important to be able to differentiate organic from mineral material. Dark color of the A horizon is due to the mixing of humus with mineral.
A soil horizon is a layer of soil parallel to the earthâs. surface. It has a unique set of physical, chemical, and bioÂ­. logical properties. The properties of soil horizons, such. as texture, color, and structure, are the results of the. soilÂ­forming processes, and they distinguish each horizon.