pertaining to the bile, to the bile ducts, or to the gallbladder. biliary catheter (biliary decompression catheter) a catheter inserted via a skin incision through the liver and common bile duct into the duodenum.
Not all of the atoms of a radioisotope decay at the same time, but they decay at a rate that is characteristic to the isotope. The rate of decay is a fixed rate called a half-life. The half-life of a radioisotope describes how long it takes for half of the atoms in a given mass to decay.
Meitnerium is a radioactive, synthetic element about which little is known. It is classified as a metal and is a solid at room temperature. Meitnerium has seven isotopes with known half-lives. The most stable is meitnerium-278 (278 Mt), with a half-life of about eight seconds. It decays into bohrium-274 (274Bh) through alpha decay. The atomic weight for manmade transuranium elements is based on the longest-lived isotope.