Computer software to enable small-angle x-ray scattering [ ; scientific and industrial measuring apparatus for use in connection with small-angle x-ray scattering; analytical apparatus for use in connection with analyzing nanopowders and nano-composite materials; computer software for the operation and management of diffractometers and spectrometers; x-ray diffractometers; x-ray analysers; x-ray fluorescence spectrometers; wafer analysers; x-ray tubes; parts and fittings for all the aforesaid ]