UV, or ultraviolet, rays are the sun's invisible burning rays. They can cause sunburns, and in some cases skin cancer. There are three types of UV rays: UVB: Are the primary cause of sun burning, premature aging of the skin and the development of skin cancer.UVC: Are blocked by the ozone layer and do not reach the earth's surface.hey can cause sunburns, and in some cases skin cancer. There are three types of UV rays: UVB: Are the primary cause of sun burning, premature aging of the skin and the development of skin cancer. UVC: Are blocked by the ozone layer and do not reach the earth's surface.
About the IAC. The Intersocietal Accreditation Commission (IAC) provides accreditation programs for vascular testing, echocardiography, nuclear/PET, MRI, diagnostic CT, dental CT, carotid stenting, vein treatment and management and cardiac electrophysiology.
IAC/MAK head office. The Interstate Aviation Committee (IAC; Russian: Ð¼ÐµÐ¶Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½ÑÐ¹ Ð°Ð²Ð¸Ð°ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ ÐºÐ¾Ð¼Ð¸ÑÐµÑ, Ð¼Ð°Ðº) is a supervising body overseeing the use and management of civil aviation in the Commonwealth of Independent States (CIS).