Abstract: The present disclosure provides a virtual scene presentation method, apparatus, device, and storage medium, the method comprising: identifying a physical object set in an environment space; determining a scene type corresponding to the environment space; obtaining a virtual scene set associated with the scene type; and presenting a virtual scene in the virtual scene set on at least part of physical objects in the physical object set.

Abstract: The present invention discloses a spatial posture adjusting device for an optical axis of a microscopic monitoring system for a cellular fermentation tank. The adjusting device includes a base frame, where the base frame is fixedly provided with an up/down adjustment table; the up/down adjustment table is slidably connected to a load plate; the load plate is fixedly provided with a microscope adjustment mechanism and an illumination rotation adjustment mechanism in sequence; the illumination rotation adjustment mechanism includes a base; the base is fixedly connected to a first support frame; the first support frame is fixedly provided with an illuminator; the microscope adjustment mechanism includes a second support frame; the second support frame is fixedly provided with a clamping device; the clamping device is fixedly provided with a microscope device; the illumination rotation adjustment mechanism is fixedly connected with a mobile platform.

Abstract: The disclosure discloses an array substrate, a method for manufacturing the same, a display panel and a display device. The array substrate includes a base substrate; a plurality of data lines and a plurality of dummy leads, wherein the plurality of data lines and the plurality of dummy leads are in the same layer on the base substrate, and the plurality of data lines and the plurality of dummy leads extend along the first direction; and at least one dummy lead includes a plurality of wires which extend in the first direction and are disconnected with one another.

Abstract: The disclosure discloses an array substrate, a method for manufacturing the same, a display panel and a display device. The array substrate includes a base substrate; a plurality of data lines and a plurality of dummy leads, wherein the plurality of data lines and the plurality of dummy leads are in the same layer on the base substrate, and the plurality of data lines and the plurality of dummy leads extend along the first direction; and at least one dummy lead includes a plurality of wires which extend in the first direction and are disconnected with one another.

Abstract: A discrete element method for modelling fracture evolution of roadway surrounding rock is provided, which includes: taking rock cores from a coal seam in the field and recording RQD values, observing roadway deformation, and making a statistical analysis on distribution characteristics of fractures in the coal seam; testing mechanical parameters of coal-rock samples indoors, and calculating strength of a rock mass according to the RQD values; creating a numerical model by using a UDEC-Trigon module to adjust the parameters to match the strength of the rock mass, and correcting model parameters; and creating a numerical model of an engineering scale to adjust the parameters to match field deformation characteristics, and finally simulating fracture evolution of the roadway surrounding rock. The present invention provides accurate and basic mechanical parameters for discrete-element numerical simulation of roadway deformation, guaranteeing realistic and reliable simulation results.

Abstract: A discrete element method for modelling fracture evolution of roadway surrounding rock is provided, which includes: taking rock cores from a coal seam in the field and recording RQD values, observing roadway deformation, and making a statistical analysis on distribution characteristics of fractures in the coal seam; testing mechanical parameters of coal-rock samples indoors, and calculating strength of a rock mass according to the RQD values; creating a numerical model by using a UDEC-Trigon module to adjust the parameters to match the strength of the rock mass, and correcting model parameters; and creating a numerical model of an engineering scale to adjust the parameters to match field deformation characteristics, and finally simulating fracture evolution of the roadway surrounding rock. The present invention provides accurate and basic mechanical parameters for discrete-element numerical simulation of roadway deformation, guaranteeing realistic and reliable simulation results.

Abstract: The present invention discloses a spatial posture adjusting device for an optical axis of a microscopic monitoring system for a cellular fermentation tank. The adjusting device includes a base frame, where the base frame is fixedly provided with an up/down adjustment table; the up/down adjustment table is slidably connected to a load plate; the load plate is fixedly provided with a microscope adjustment mechanism and an illumination rotation adjustment mechanism in sequence; the illumination rotation adjustment mechanism includes a base; the base is fixedly connected to a first support frame; the first support frame is fixedly provided with an illuminator; the microscope adjustment mechanism includes a second support frame; the second support frame is fixedly provided with a clamping device; the clamping device is fixedly provided with a microscope device; the illumination rotation adjustment mechanism is fixedly connected with a mobile platform.

Abstract: An apparatus for protecting a roof tray when a gob-side entry retaining end support migrates is provided. The apparatus is mounted at a top end position of a hydraulic support, and includes a movable bearing mechanism, an automatic expansion/contraction connecting groove mechanism, and an active reset mechanism. The movable bearing mechanism includes two parallel belts and a plurality of rollers supporting the belts, and the rollers are mounted on and supported by a bearing mechanism. The automatic expansion/contraction connecting groove mechanism is two concave base plates fixed between the two belts, and the two concave base plates are spaced by a distance. The active reset mechanism includes two telescopic rods and reset springs sleeved on the telescopic rods, and the telescopic rod is connected to an end portion of the reset spring to form a synchronous mechanism.

Abstract: The present disclosure provides an array substrate, a display panel and a display device. The array substrate includes a base substrate and a thin film transistor. An orthographic projection of a drain of the thin film transistor on the base substrate does not go beyond an orthographic projection of a gate of the thin film transistor on the base substrate.

Abstract: The present disclosure provides an array substrate, a display panel and a display device. The array substrate includes a base substrate and a thin film transistor. An orthographic projection of a drain of the thin film transistor on the base substrate does not go beyond an orthographic projection of a gate of the thin film transistor on the base substrate.

Abstract: A method for a communication device for securely accessing a device includes obtaining accessing authentication information via an out-band channel, the accessing authentication information being used for accessing authentication between a service request device and a service providing device, the service request device and the service providing device sharing the same management device, and forming the out-band channel with the management device respectively (11); and authenticating the accessing authentication information, and providing, by the service providing device, when an authentication result indicates that the authentication of the accessing authentication information is passed, service for the service request device via an in-band data channel, the service providing device and the service request device forming the in-band data channel via a service network (12).

Abstract: A method for a communication device for securely accessing a device includes obtaining accessing authentication information via an out-band channel, the accessing authentication information being used for accessing authentication between a service request device and a service providing device, the service request device and the service providing device sharing the same management device, and forming the out-band channel with the management device respectively (11); and authenticating the accessing authentication information, and providing, by the service providing device, when an authentication result indicates that the authentication of the accessing authentication information is passed, service for the service request device via an in-band data channel, the service providing device and the service request device forming the in-band data channel via a service network (12).