Abstract: A method and an apparatus for adjusting a backlight brightness of a screen, and a mobile terminal are provided. At least one of a display frame characteristic of the screen, a user behavior characteristic, a camera status and a scene characteristic of the screen is obtained when a backlight control function is enabled. A target backlight control level is determined according to the at least one of the display frame characteristic of the screen, the user behavior characteristic, the camera status and the scene characteristic of the screen. The backlight brightness of the screen is adjusted dynamically based on the target backlight control level.

Abstract: A method, device and non-transitory computer-readable storage medium for controlling a frame rate of a mobile terminal are disclosed. The method includes obtaining a rendering frame rate of a target object In a current running scene, the target object including a target application or a target layer, setting a composition frame rate in the current running scene according to the rendering frame rate of the target object, composing rendered images in the current running scene at the composition frame rate, and displaying a composed image.

Abstract: A method for determining a scene currently displayed on a terminal and a terminal are provided. The method includes obtaining parameters for determining a scene currently displayed on the terminal, and determining the scene currently displayed on the terminal based on the parameters. The parameters include one or more process identifiers of a currently running application and sensing data provided by one or more sensors of the terminal.

Abstract: A method for controlling image display is provided. The method includes determining a target image display scheme based on at least one of a currently displayed image or a user operation, and processing and displaying a to-be-displayed image based on the target image display scheme. The target image display scheme may contain one or more parameters related to image display effects.

Abstract: A method and an electronic device for controlling display refresh rate of an electronic device include operations as follows. When there is at least one foreground application currently running is a predefined application of a white list, a predefined refresh rate of the at least one foreground application is obtained and a target refresh rate of a display screen of the electronic device is determined according to the predefined refresh rate of the at least one foreground application. A frame buffer of the electronic device is controlled to send frame data to be displayed to the display screen at the same frequency as the target refresh rate.

Abstract: The invention discloses an agitation device comprising an impeller, an agitating shaft and a power device. The impeller includes a disc, a hub and concave blades. Each blade consists of a concave surface which extends radially and has an annular sector-like shape, the projections of the upper and lower portions of the blade in the horizontal plane are two annular sectors, and the radian of the annular sector obtained by the projection of the upper portion is larger than that of the lower portion, and the annular sector-like shape and the rotation direction of blades are the same, so that each portion of the blades directly faces an incoming flow, the utilization efficiency of blades is increased and the impeller has low energy consumption and high gas-liquid dispersion efficiency. The device is efficient and energy-saving, has low power consumption, high mixing performance and high gas holdup and mass transfer performance.

Abstract: The present invention discloses an airlift reactor assembly with a helical sieve plate, comprising a reaction tank, wherein a draft tube and a gas sparger are assembled in the reaction tank, the gas sparger is arranged just below an riser section of the draft tube, a helical sieve plate is arranged in the riser section of the draft tube, and a body of the helical sieve plate is helical upwards to guide a part of two/three-phase flow in the riser section, and the body of the helical sieve plate is provided with a plurality of sieve meshes to guide the remaining two/three-phase go through the helical sieve plate in the riser section and to break bubbles. The present invention gives consideration to both macroscopic mixing and microscopic mixing processes.

Abstract: To help a database administrator assess the impact of database server changes on applications, trace files are preprocessed into intermediate files with events sorted by generation order. Unused event classes and columns of a trace file are excluded, and pre-calculated data may be included. Intermediate files are then dispatched across a set of clients, and replay occurs in a synchronization mode or a stress mode. Synchronization mode releases events in submission order, whereas stress mode releases events in emulation of their original timing. Replay parameters include server idle time cap, query timeout value, a connect-time scaling factor for scaling time between trace start and connection login, and a think-time scaling factor for scaling the time between events on a replay client—database server connection. Each replay client generates a result file, which a replay controller aggregates for administrator analysis.