Abstract: The present disclosure provides a Lactobacillus strain IMAU80584, a fermentation microbial agent, and use thereof, and belongs to the technical field of microorganisms. The Lactobacillus strain IMAU80584 was deposited in the Guangdong Microbial Culture Collection Center (GDMCC), with an accession number of GDMCC 1.2566. The Lactobacillus strain IMAU80584 of the present disclosure has excellent acid-producing properties, prominent acid tolerance, and strong fermentation ability, and the Lactobacillus strain IMAU80584 exhibits a strong inhibitory effect on Escherichia coli (E. coli). As a probiotic, the Lactobacillus IMAU80584 screened by the present disclosure has promising application prospects and huge economic values in the fields of pathogenic bacteria control and fermented foods.

Abstract: A tree crown extraction method based on UAV multi-source remote sensing includes: obtaining a visible light image and LIDAR point clouds, taking a digital orthophoto map (DOM) and the LIDAR point clouds as data sources, using a method of watershed segmentation and object-oriented multi-scale segmentation to extract single tree crown information under different canopy densities. The object-oriented multi-scale segmentation method is used to extract crown and non-crown areas, and a tree crown distribution range is extracted with the crown area as a mask; a preliminary segmentation result of single tree crown is obtained by the watershed segmentation method based on a canopy height model; a brightness value of DOM is taken as a feature, the crown area of the DOM is performed secondary segmentation based on a crown boundary to obtain an optimized single tree crown boundary information, which greatly increases the accuracy of remote sensing tree crown extraction.

Abstract: A tree crown extraction method based on UAV multi-source remote sensing includes: obtaining a visible light image and LIDAR point clouds, taking a digital orthophoto map (DOM) and the LIDAR point clouds as data sources, using a method of watershed segmentation and object-oriented multi-scale segmentation to extract single tree crown information under different canopy densities. The object-oriented multi-scale segmentation method is used to extract crown and non-crown areas, and a tree crown distribution range is extracted with the crown area as a mask; a preliminary segmentation result of single tree crown is obtained by the watershed segmentation method based on a canopy height model; a brightness value of DOM is taken as a feature, the crown area of the DOM is performed secondary segmentation based on a crown boundary to obtain an optimized single tree crown boundary information, which greatly increases the accuracy of remote sensing tree crown extraction.

Abstract: Disclosed are a media file processing method for a display device and the display device. The method includes receiving, by the display device being in a standby mode, a wakeup signal broadcasted from a mobile device through a wireless module of the display device; and triggering, according to the wakeup signal, an electrical level change so that the display device is configured to enter into a customized mode where the display device is started but a screen of the display device is not lighted. The display device in the customized mode is discoverable by the mobile device. The method includes receiving, by the display device in the customized mode, a push instruction for playing a media file transmitting from the mobile device, lighting the screen, and playing the media file according to the push instruction so as to make the display device enter a normal operating mode.

Abstract: Disclosed are a media file processing method for a display device and the display device. The method includes receiving, by the display device being in a standby mode, a wakeup signal broadcasted from a mobile device through a wireless module of the display device; and triggering, according to the wakeup signal, an electrical level change so that the display device is configured to enter into a customized mode where the display device is started but a screen of the display device is not lighted. The display device in the customized mode is discoverable by the mobile device. The method includes receiving, by the display device in the customized mode, a push instruction for playing a media file transmitting from the mobile device, lighting the screen, and playing the media file according to the push instruction so as to make the display device enter a normal operating mode.

Abstract: A magnetic field generation apparatus (6) of a magnetorheological polishing device comprises at least one electromagnetic pole set capable of producing a gradient magnetic field and consisting of two electromagnetic poles having opposing polarities; the electromagnetic poles forming the electromagnetic pole set uses at least two annular magnetic poles arranged in concentric circles, wherein the polarities of two adjacent magnetic poles are opposing. The apparatus (6) is used for processing a multi-degree of freedom movement workpiece with a magnetorheological fluid, and with single clamping, is capable of simultaneously performing polishing processing on the outer surface(s) of one or more workpieces, the outer surfaces of which may be flat surfaces, cambered surfaces or complex curved surfaces. The apparatus (6) effectively solves the problem of it being difficult to finish complex shaped surfaces, reduces workpiece processing procedures, and effectively increases polishing efficiency.