A method and apparatus for detecting radiation including x-ray, gamma ray, and particle radiation for radiographic imaging, and nuclear medicine and x-ray mammography in particular, and material composition analysis are described. and pressures of from 1000 to 4000 bar, hydrogen is intermittently introduced into the reactor. The through hole has a first end, a second end, and a shoulder. The first wall of the second shelter is connected with the connection portion. The computer uses the inductive bias dataset to select a plurality of inductive biases for application to one or more new datasets.