1. Spot-ELISA Dot-ELISA (dot-ELISA) features: â‘ take nitrocellulose membrane with strong protein adsorption capacity as a solid-phase carrier; â‘¡ the substrate forms a colored precipitate after enzyme reaction, and dyes the solid-phase membrane. In the laboratory, spot-ELISA can be per ----more
Page 1: Chinese classical hardwood furniture popular in the West Hong Kong launched auction special Page 2: Chinese classical hardwood furniture popular in the West Hong Kong launched auction special From the 19th century to the beginning of the 20th century, Chinese lacquer furniture and export ----more
The general weight range of offset paper is 60-120g, which is higher than that of high-gram weight offset paper. There are 150, 180, 200, 300 grams and so on. It is manufactured with a double-flow paddle, which has the advantages of no printing powder, no deformation, high surface smoothness, and ----more
Recently, a series of CNC machine tools independently developed by China and equipped with the world's first intelligent motion control system, i5 CNC system, were first unveiled at the China International Machine Tool Exhibition in Beijing. As the world's first fully intelligent CNC syste ----more
The conductivity of a solution with a certain concentration changes with temperature. It should be kept at a constant temperature when making precise measurements, or it can be measured at any temperature, and then converted to the conductivity at 25 ° C through the temperature compensation syste ----more
[ppzhan Abstract] At present, more and more small and medium-sized printing plants are beginning to use digital prepress workflows. The increase in demand for printed materials and the increase in production capacity utilization of printing companies will prompt people to increase investment in the ----more
[ Chinese wardrobe net ] Many people understand the custom wardrobe is produced according to personal preferences, usage habits, but there are still "standard" and "non-standard" points, today Xiaobian will add a little to everyone Little common sense. Conceptual ----more