Multiple blanket implantations of one or more p type dopants into a semiconductor substrate are performed to facilitate isolation between nwell regions subsequently formed in the substrate. In particular, we will describe apparatus for bulk and selective excavation of sand, silt, clay and like materials from sea, river, canal and lake beds, and near-bed movement of the excavated material in a controlled fashion. Also provided on the same page is at least one phonetic symbol component that constitutes a phonetic symbol combination representing pronunciation of the Chinese character. The generating part generates executed blocks information indicating first instruction blocks which are executed by the executing part. The image processor is configured to generate projection image data from the 2D X-ray image and iteratively reconstruct the 2D X-ray image to generate a scatter-corrected X-ray image based on the generated projection image data. The first contact includes one or more contact elements adapted to be in electrical contact with the second contact when the contacts are in the closed position, and a mesh made of metal arranged in thermal contact with the contact elements.