2results about How to "Scan stable" patented technology

This utility model discloses a forging stress detection device, relating to the field of materials science and technology. The device includes a base with a support frame fixedly connected to its top. A fixing mechanism is mounted on the base, and a detection mechanism is mounted on the support frame. The fixing mechanism includes a limiting ring, with a threaded rod rotatably connected to the inner wall of the limiting ring. By incorporating a soft pad, rotating a knob causes the threaded rod to rotate, which in turn moves a threaded cylinder downwards along the threaded rod. This threaded cylinder then pulls a connecting rod downwards, which in turn pulls the moving blocks closer together. The soft pad, which clamps and fixes the forging, effectively isolates it from external vibrations and the vibrations of the testing equipment, preventing displacement due to insufficient fixation and ensuring the accuracy of the test results.

The application discloses a method for detecting artepillin C in Brazilian propolis by using a thin layer scanner and belongs to the field of traditional Chinese medicine quality detection. The method specifically comprises the following steps: sucking the pretreated propolis sample solution and spotting the sample solution on a thin layer chromatography silica gel plate; adopting a mixed system of petroleum ether, ethyl acetate and formic acid with a volume ratio of (8-14):(3-6):(0.2-1) as a developing agent, flowing the developing agent through the fixed phase with the propolis sample solution, and drying to obtain a sample to be measured; scanning the chromatographic spots in the sample to be measured by using a thin layer scanner, testing the wavelength of 290-320 nm, the reference wavelength of 400-800 nm, and obtaining the absorbance integral value of the sample to be measured; and converting the absorbance integral value with an artepillin C standard curve to obtain the content of artepillin C in the sample to be measured. The method can simultaneously determine the content of artepillin C in multiple batches of propolis samples, the chromatographic peak of artepillin C is well separated and stable in scanning, and the method has the advantages of fast detection speed and low cost.