Sr2CuO2Cl2. Represents an almost great circumstance of the 2-D antiferromagnetic CuO2-aircraft and thus is of particular desire during the context of the origins of higher TC superconductivity. We have calculated experimentally and analyzed theoretically the Ti 2p X-ray photoemission spectra (XPS) and the resonant improvement of valence photoemissionat the Ti https://okada4dsg.com/