special stain
4.Environmental samples were cultured in a special selective enrichment culture for nitrite-oxidizing bacteria, and identified by biochemical methods, gram-stain reaction, PCR and electron microscope. 10 strains of bacteria were screened and isolated by enrichment culture from soil and sewage, and were named X01～X10 in turn, which were all gram-negative microorganisms and rod or cocci bacteria.
5.The stain?resistant and self?cleaning paint hass attracted great attention for its special properties. The preparation of hydrophobic and self?cleaning paint with excellent performance by combining the theories of phase?separation and “lotus?effect” with the composite method of nano and organic materials has received a lot of research attention recently.
