Sr2CuO2Cl2. represents an almost excellent case of the two-D antiferromagnetic CuO2-airplane and therefore is of distinct desire during the context on the origins of substantial TC superconductivity. We've calculated experimentally and analyzed theoretically the Ti 2p X-ray photoemission spectra (XPS) plus the resonant enhancement of valence photoemissionat the Ti 2p https://okada4dsg.com/