2results about How to "Determine science" patented technology

The application provides a radiation work risk grade determination method and system based on quantitative analysis. The method comprises the following steps: obtaining a radiation risk grade corresponding to each risk value and each item that has an influence on the radiation risk; determining each radiation risk quantitative analysis item and a weight corresponding to each radiation risk quantitative analysis item according to each item that has an influence on the radiation risk; establishing a radiation risk analysis model based on each radiation risk quantitative analysis item, the weight corresponding to each radiation risk quantitative analysis item, and the radiation risk grade corresponding to each risk value; obtaining each work parameter data corresponding to radiation work, and determining a risk grade corresponding to the radiation work based on the radiation risk analysis model. The technical scheme provided by the application can quantitatively, scientifically and accurately determine the risk grade of the radiation work of a nuclear power plant.

The invention provides a battery cell sampling method and a method for testing the moisture content in a battery cell. The sampling method comprises the following steps: (1) carrying out vacuum baking treatment on a battery cell to obtain a baked battery cell; (2) sampling the baked battery cell in the thickness direction, the length direction and the width direction, and sampling a positive pole piece, a negative pole piece and a diaphragm at each sampling point to obtain a sample of which the moisture content is to be detected. According to the sampling method provided by the invention, the most representative moisture content test position in the battery cell can be scientifically and accurately obtained, so that the safety risk and battery performance degradation caused by unqualified moisture are avoided; meanwhile, the highest position of the water content is taken as a subsequent batch production sampling point, so that the detection time can be greatly saved, and the detection efficiency is improved.