Abstract: An online stress monitoring system is used to obtain a stress distribution of each position, a geophone monitoring system is used to monitor high-frequency vibration signals produced by coal and rock fracture, a support resistance monitoring system is used to monitor working resistance of hydraulic supports in a working face, a well-ground joint microseismic system is used to monitor low-frequency vibration signals produced by the coal and rock fracture, and realize position of a microseismic source and inversion imaging of mining fractures, and an anchor stress monitoring system is used to monitor stress states of anchor bolts and cables. A data processing center is used to comprehensively process data obtained from the above five systems using an early warning model, thereby to obtain a prediction result of rock burst and determine whether to make early warning, thus workers can take timely measures according to the early warning situation.

Abstract: Provided are a phase shifter, a driving method therefor and an antenna. The phase shifter includes a first substrate and a second substrate, which are disposed opposite to each other, and a first dielectric layer disposed therebetween; the first substrate includes: a first base, and a first reference electrode layer disposed on a side of the first base close to the first dielectric layer, and including first reference electrodes insulated and spaced apart from one another and each having a first opening; the second substrate includes a second base, first transmission lines on the second base and spaced apart from one another; the first transmission lines are in one-to-one correspondence with the first reference electrodes; an orthographic projection of a first transmission end of each first transmission line on the second base at least partially overlaps that of the first opening corresponding thereto on the second base.

Abstract: Disclosed are a dynamic display method based on an operating body, a computer-readable storage medium and electronic device. The method includes: determining a position of a to-be-displayed icon on a screen in response to an air operation performed by the operating body relative to the screen in space; displaying the icon at the determined position; determining a first movement physical quantity of the operating body in response to detecting the operating body moving; determining a second movement physical quantity of the icon on the screen based on the first movement physical quantity; and controlling the icon to be dragged on the screen based on the second movement physical quantity. Thus, a user can know whether the air operation is accurate or not in real time according to a moving track of the icon, which improves the user's sense of control and the accuracy of the air operation.

Abstract: A dimming structure and a dimming device are provided. The dimming structure includes a positive current collector layer, a positive pole, an electrolyte layer, and a negative current collector layer; the positive current collector layer is connected to a first positive pole of a power supply; the positive pole is provided on a side of the positive current collector layer; the electrolyte layer is provided on a side of the positive pole away from the positive current collector layer; the negative current collector layer is provided on a side of the electrolyte layer away from the positive current collector layer and is connected to a first negative pole of the power supply; the positive current collector layer and the negative current collector layer are conductors; the positive current collector layer, the positive pole, the electrolyte layer, and the negative current collector layer are all light-transmissive layers.

Abstract: A nail lamp includes a base, a flexible tube and an ultraviolet lamp body. One end of the flexible tube is provided on the base, and the other end is provided with a first magnetically-attracting fit portion. The ultraviolet lamp body is provided with a plug hole and a second magnetically-attracting fit portion, the second magnetically-attracting fit portion is located at the plug hole, the other end of the flexible tube is plugged into the plug hole, and the first magnetically-attracting fit portion and the second magnetically-attracting fit portion are fitted in a magnetic attraction manner.

Abstract: Provided are an extractant for ultra-high molecular weight PE fibers and membranes, and methods of preparing and applying the same, relating to the technical field of polyethylene preparation. An extractant for ultra-high molecular weight PE fibers and membranes comprises an ionic liquid, which is one or more of an imidazolium tetrafluoroborate salt, a betaine salt, an imidazolium acetate salt, an imidazolium dicyanamide salt, an imidazolium ethyl sulfate salt, an imidazolium bis (fluorosulfonyl) imide salt and a bis((trifluoromethyl) sulfonyl) imide salt.

Abstract: The present disclosure provides a filtering antenna. The filtering antenna includes: a ground layer, a first dielectric layer, a second dielectric layer and a radiating patch and a coupling probe. The coupling probe includes a microstrip line sandwiched between the first and second dielectric layers, and includes a feeder that penetrates the first dielectric layer. The microstrip line includes a trunk line and an open-circuit branch line connected to the trunk line. A distance between a feed center of the microstrip line and a first end of the trunk line is D1, and a distance between an orthographic projection of the first end of the trunk line on the second dielectric layer and an orthographic projection of an edge of the radiating patch on the second dielectric layer is D4, where 2.5?D1/D4?3.0.

Abstract: A photovoltaic tracking method and apparatus, a tracking controller and a photovoltaic tracking system. The method includes: determining an advance adjustment time instant between a previous preset adjustment time instant and a next preset adjustment time instant; obtaining a target tracking angle of a tracking bracket corresponding to the next preset adjustment time instant; and adjusting an angle of the tracking bracket to the target tracking angle in a case that a current time instant is the advance adjustment time instant, wherein the angle of the tracking bracket remains unadjusted at the previous preset adjustment time instant and the next preset adjustment time instant. In this application, the power generation of the photovoltaic module is increased in the time period from the previous preset adjustment time instant to the next preset adjustment time instant, thereby reducing the power loss of the photovoltaic power generation.

Abstract: The disclosure provides a phase shifter, a manufacturing method thereof and an antenna, and belongs to the field of communication technology. The phase shifter includes a first substrate; a signal line and reference lines on the first substrate; a first insulating layer on the signal line; a plurality of electrode film bridges on a side of the first insulating layer distal to the signal line; and a first transmission structure on the first insulating layer and electrically connected to the signal line; and an orthographic projection of the first transmission structure on the first substrate is not overlapped with an orthographic projection of the plurality of electrode film bridges on the first substrate.

Abstract: A polymeric compound is disclosed herein, having the general formula I: wherein m, n, X, Y, Z and L are as defined herein. Further disclosed herein are lipid bilayers comprising at least one bilayer-forming lipid and the aforementioned polymeric compound, and liposomes comprising such a bilayer, as well as methods, uses and compositions utilizing such bilayers and/or liposomes for reducing a friction coefficient of a surface and/or for inhibiting biofilm formation.

Abstract: A bathtub device for bubble bath physiotherapy, wherein the bathtub body is mounted on the bathtub body support. The exhaust system of the bathtub device is mounted in a space between the bathtub body and the bathtub body support. A fan is configured for delivering gas. The air suction inlet ends of the air suction pipe are configured to be in communication with the upper open side of the bathtub body, and the air suction outlet end is connected to the air inlet side interface device of the fan. The exhaust inlet end of the exhaust pipe is connected to the air outlet side interface device of the fan. The present invention further provides a bubble bath physiotherapy system comprising the bathtub device. By using the bathtub device, a safer bubble bath can be achieved.

Abstract: Systems and methods are disclosed related to generating an interactive user interface that enables a user to move, rotate or otherwise edit 3D point cloud data in virtual 3D space to align or match point clouds captured from LiDAR scans prior to generation of a high definition map. A system may obtain point cloud data for two or more point clouds, render the point clouds for display in a user interface, then receive a user selection of one of the point clouds and commands from the user to move and/or rotate the selected point cloud. The system may adjust the displayed position of the selected point cloud relative to the other simultaneously displayed point cloud(s) in real time in response to the user commands, and store the adjusted point cloud position data for use in generating a new high definition map.

Abstract: A display device and a manufacturing method therefor are provided by the present application. The display devices can greatly increase the bonding precision of the chip packaging unit and the display panel, thereby the quantity of the output channels of chip packaging unit are greatly increased, thus the requirements of the high-resolution display products are satisfied. A chip packaging component is formed, wherein the chip packaging component includes at least one chip packaging unit; and the chip packaging unit includes at least a flexible base, a rigid base disposed at one side of the flexible base, and a lead layer disposed at one side of the flexible base away from the rigid base, lead layer includes at least a plurality of first leads, and orthographic projections of the plurality of first leads on the flexible base are located within an orthographic projection of rigid base on the flexible base.

Abstract: A phase shifter includes a base substrate; a signal electrode, first and second reference electrodes all on the base substrate, and the first and second reference electrodes being respectively on two sides of a length direction of the signal electrode; an interlayer insulating layer on a side of the signal electrode away from the base substrate; and a phase control unit including a film bridge on a side of the interlayer insulating layer away from the base substrate. The signal electrode is in space enclosed by the base substrate and the film bridge, and two ends of the film bridge respectively overlap with the first and second reference electrodes in a direction perpendicular to the base substrate. The film bridge includes first and second anchor point areas and a functional area between the first and second anchor point areas, and has a hollow pattern in the functional area.

Abstract: Disclosed are an OLED display panel and a display device. The OLED display panel includes a substrate, a plurality of light emitting components arranged in an array, and a light resistance structure between the light emitting components. The light resistance structure prevents the reflected light of the emergent light from the light emitting components, from emitting out from one side of the substrate between the light emitting components.

Abstract: A pixel driving circuit includes a first circuit and a second circuit. The first circuit is configured to provide a driving current to a light emitting element under the control of the second circuit; the second circuit is configured to receive a digital selection signal from at least one digital selection signal line, receive a digital data signal from at least one digital data signal line, and control a frequency and duration of the driving current received by the light emitting element during one frame of image, thereby controlling tahe grayscale of a sub-pixel having the light emitting element.

Abstract: A water-ball toy with a high playability comprises a central body made of sponge, and an outer shell continuously formed around the central body; the central body has a maximum outer perimeter width around the outer perimeter thereof; the outer shell comprises an inner wall surface and an outer wall surface, the inner wall surface defining an inner cavity having a minimum inner cavity diameter around the inner wall surface, the inner cavity diameter is not less than the outer perimeter width; the outer wall surface has at least a portion of a spherical surface, the outer wall surface further has a plurality of through holes formed therein, there is a wall thickness between the outer wall surface and the inner wall surface; the plurality of through holes extend through the wall thickness and define passages for water to enter and exit from the inner cavity through the through holes.