The composition, morphology and size distribution of crystallites and nanoparticles inurines of healthy people and stone patients were comparatively investigated by X-ray diffraction(XRD), Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy(TEM), scanning electron microscopy (SEM) and laser light scattering apparatus.

High performance ion exchange chromatography coupled with laser light scattering instrument was employed for the rapid separation and quantitation of Ralstonia solanacearum of different virulence.

This paper introduces a way that is used to directly measure molecular weight of semifinished product of transparent shock resident butadiene-styrene copolymer by laser light scattering apparatus at three angles and size-exclusion chromatography together substituting traditional Ubbelodhe viscometer used to indirectly measure molecular weight.