Abstract: A method for counting suckling piglets based on self-attention spatiotemporal feature fusion is disclosed, which includes: detecting a side-lying sow in a video frame by using CenterNet to acquire a key frame of suckling piglets and a region of interest of the video frame, and overcome the interference of the movement of non-suckling piglets on the spatiotemporal feature extraction for the region of interest; transforming spatiotemporal features extracted by a spatiotemporal two-stream convolutional network from a key frame video clip into a spatiotemporal feature vector, inputting the obtained spatiotemporal feature vector into a temporal, a spatial and a fusion transformer to obtain a self-attention matrix; performing element-wise product for the self-attention matrix and the fused spatiotemporal features to obtain a self-attention spatiotemporal feature map; and inputting the self-attention spatiotemporal feature map into a regression branch of the number of suckling piglets to complete the counting of the

Abstract: The present invention discloses a terahertz material with therapeutic and health care effect and its preparation method and application, which includes the following raw materials in parts by weight: 15˜28 SiO2, 3˜8 Al2O3, 1˜3 selenium, 2˜5 germanium, 10˜15 Fe2O3, 35˜45 ochre, 20˜35 zinc oxide, 65˜80 CaCO3, 0.1˜0.5 rare earth palladium, 1˜10 SiOx, wherein the raw materials of components are mixed according to the above proportion, and crushing, heating to 600˜1200° C. in an oxygen free environment for 3˜8 hours, and then secondary crushing, having a fineness of 3000˜8000 mesh; and then, after crushing again and powdering processing, the fineness reaches more than 10000 mesh. After being enhanced treatment by the terahertz irradiation line, the terahertz materials with therapeutic and health care effects are obtained. They can be processed and manufactured into a variety of physiotherapy equipment, with fast action speed and stable effect on human body.

Abstract: A terahertz material for emission reduction and fuel saving of gasoline vehicles and its preparation method and application, includes the following raw materials in parts by weight: 20˜35 SiOx, 3˜15 Al2O3, 25˜45 SiO2, 15˜25 Fe2O3, 20˜40 ochre, 0.5˜2 barium tungstate, 15˜25 CaCO3, wherein a preparation methodincludes: mixing the component raw materials according to the above ratio; after crushing, performing heating to 600˜1,200° C. in an oxygen-free environment, maintaining the temperature for 3˜8 hours, and then performing crushing for the second time; and performing enhancement processing with terahertz irradiation rays at 10 mW to 100 W for 5 seconds to 1 hour to obtain a terahertz material, wherein the terahertz material improves combustion efficiency by increasing the molecular activity of gasoline and air participating in combustion work and reducing molecular groups, and has the effects of emission reduction, energy saving and improving power.