Alpha decay helium produced on Earth is the result of the alpha decay of underground deposits of minerals containing uranium or thorium. The helium is brought to the surface as a by-product of natural gas production. Alpha particles were first described in the investigations of radioactivity by Ernest Rutherford in 1899, and by 1907 they were identified as He ions. By 1928, George Gamow had solved the theory of alpha decay via tunneling. The alpha particle is trapped in a potential well by the nucleus. Classically, it is forbidden to escape, but according to the (then) newly discovered principles of quantum mechanics,
Hepatocyte nuclear factor 4 alpha the HNF4A gene are associated with a form of diabetes called maturity onset diabetes of the young (MODY). Increased amplification of hepatocyte nuclear factor 4 alpha has been observed in colorectal cancer. Hepatocyte nuclear factor 4 alpha has been shown to interact with: Hepatocyte nuclear factor 4 alpha Hepatocyte nuclear factor 4 alpha (HNF4A) also known as NR2A1 (nuclear receptor subfamily 2, group A, member 1) is a nuclear receptor that in humans is encoded by the "HNF4A" gene. HNF-4α is a nuclear transcription factor that binds DNA as a homodimer. The encoded protein controls the expression of several genes,