A detectably labeled porphyrin compound for identifying a sentinel lymph node in patients, particularly those with cancer. The derived streams transmitted in this way are then bundled again to form a stream of outgoing digital signals. The method of the invention is also used for the development of cermet particulates and topological insulator particles. A data processing unit receives signals from the first circuit and the second circuit during transit of an article, indicating the shape of the articles, and compares them with reference ranges to determine whether the article is whole. This preferred C-I-P embodiment contains no \u201coutside\u201d vent holes which extend through the suppressor’s outer or longitudinal wall. Various groupings of links in parallel displacement are described.