Abstract: The disclosure provides a light bar, a backlight module and a display device. The light bar includes a plurality of lamp beads, wherein each of the lamp beads is a dual-crystal lamp with two light-emitting crystals.

Abstract: A bidirectional isolated resonant converter includes a first side circuit, a second side circuit, and a resonant tank circuit. The resonant tank circuit includes a first resonant capacitor, a resonant inductor, an isolated transformer and a second capacitor. The first resonant capacitor, the resonant inductor and a first side winding of the isolated transformer are connected in series. A second side winding of the isolated transformer and the second capacitor are connected in series. The resonant inductor and the isolated transformer are integrated into an integrated magnetic component, wherein a magnetic core of the integrated magnetic component includes an inductor magnetic core portion on which an inductor winding is wound, a transformer magnetic core portion on which the first side winding and the second side winding are wound, and a common magnetic core portion shared by the resonant inductor and the isolated transformer to form closed magnetic paths, respectively.

Abstract: The disclosure discloses a method to elevate the amount of steviol glycosides remained in the recrystallization mother liquor of Stevia extract, and belongs to the field of modification and extraction of natural compounds. The disclosure adopts lactase for highly specific catalytic hydrolysis of stevioside to convert stevioside into rubusoside which usually can only be obtained from leaves of Rubus suavissimus S. Lee; and meanwhile, after stevioside in the mother liquor glycosides is converted, since the polarity difference between rubusoside and rebaudioside A is far larger than the polarity difference between stevioside and rebaudioside A, rebaudioside A is more easily separated out of the mother liquor glycosides. A technology provided by the disclosure is also applicable to value increment of mixed steviol glycosides containing stevioside and is beneficial for separating out rebaudioside A from the mixed steviol glycosides.

Abstract: The present invention discloses an immersion type heat dissipation cooling liquid for power lithium battery and a method for preparing thereof. It is composed of 30 parts to 70 parts of hydrofluoroether compound, 30 parts to 50 parts of halogenated hydrocarbon, 1 part to 10 parts of alcohol compound, 0.01 parts to 0.5 parts of antioxidant, 0.01 parts to 0.5 parts of preservative, and 0.01 parts to 0.5 parts of nano metal oxide. The present invention mainly includes the hydrofluoroether compound, which is mixed with the halogenated hydrocarbon, the alcohol and other compounds to form an azeotrope, and is supplemented with antioxidant, preservative and non-conductive nano metal oxide additive to form a cooling liquid composition. The present invention can quickly realize the heat transfer effect, effectively solve the problem of heat generation and heat dissipation of the power lithium battery.

Abstract: An isolated resonant converter is provided, including a first side circuit, a second side circuit, and a resonant tank circuit. The resonant tank circuit includes a first resonant capacitor, a second resonant capacitor, and an integrated magnetic element. The integrated magnetic element includes a first side winding, a second side winding and a spaced groove provided between the first side winding and the second side winding. And the spaced groove stores leakage inductance energy, thereby forming at least part of resonant inductance required. Therefore, a number and volume of magnetic elements in the resonant converter are reduced.

Abstract: Disclosed in embodiments of the present invention are a control method and device for an alternating-current and direct-current conversion circuit, and a computer storage medium. The alternating-current and direct-current conversion circuit comprises a first commutation unit, a second commutation unit, and a coupling unit. By obtaining voltage information and current information of the alternating-current and direct-current conversion circuit, a controllable device of the first commutation unit can be controlled to be turned on in delay or turned off in advance; and the second commutation unit is controlled to work in a controllable rectification state or a controllable inversion state or an uncontrollable rectification state.

Abstract: A method of multi-sensor alignment includes mechanically moving at least one sensor in a plurality of sensors to boresight and focus the plurality of sensors with one another so a respective optical center of each of the plurality of sensors is aligned and focused. The method includes collecting calibration images of a target wherein each sensor of the plurality of sensors collects at least one image of the target, and analytically comparing the images with one another to produce a look up table (LUT) of optical distortion and spatial registration for registration of image data from the plurality of sensors. The method includes saving the LUT in sensor memory for use in registering live images from the plurality of sensors.

Abstract: Aspects of the disclosure are related to a method, apparatus, and system for using display content from a rich operating system (OS) environment as a background image in a trusted user interface (UI), comprising: capturing a display buffer of the rich OS environment; passing the captured display buffer to a Trusted Application; and displaying, with the Trusted Application, the captured display buffer as the background image in the trusted UI, wherein the Trusted Application is executed in a Trusted Execution Environment (TEE).

Abstract: A 3D printer includes a resin reservoir arranged for being filled with a predetermined amount of liquid resin, a light exposure module, and a control processor. The light exposure module includes a plurality of light sources supported above the resin reservoir, wherein each of the light sources is arranged for flashing a discrete image to solidify the liquid resin in the resin reservoir. The control processor controls the light sources to flash the discrete images at the same time and to combine the discrete images into a combined image for forming a layer of a 3D object when the liquid resin is solidified.

Abstract: A pixel circuit includes a driving sub-circuit, a writing sub-circuit, a light-emitting device and a fingerprint information output sub-circuit. The writing sub-circuit is coupled to the driving sub-circuit, a first signal terminal and a data signal terminal, which is configured to write a data signal to the driving sub-circuit under control of a signal from the first signal terminal. The driving sub-circuit is coupled to an anode of the device and a first voltage terminal, which is configured to drive the device to emit light by using a voltage from the first voltage terminal, and provide a coupling capacitance to acquire fingerprint information. The fingerprint information output sub-circuit is coupled to the anode, a third signal terminal and a signal reading line, which is configured to output a signal acquired at the anode as the information to the line under control of a signal from the third signal terminal.

Abstract: A porous bionic skull repairing material includes a polymer material, whose structure is consistent with that of a human skull. The surface layers of the porous bionic skull repairing material are dense layers which are composed of non-degradable or degradable polymer materials and has blind holes having an asymmetric structure, and the inner layer of the porous bionic skull repairing material is a loose layer which has a porous structure. The repairing material can be molded by adopting a mixed mould pressing method or a 3D printing method, simulates a bone structure, with two dense sides and a loose middle, of a human skull to the greatest extent.

Abstract: Embodiments of the present disclosure disclose a display apparatus, an electroluminescent display panel and a method of acquiring and displaying an image by the display apparatus. The display apparatus includes an electroluminescent display panel; and a camera. The electroluminescent display panel includes: a substrate; and a plurality of pixel units disposed in a display area on the substrate and each including at least two sub-pixels. The display area has an image acquiring region including the sub-pixels, at least one of the sub-pixels in the image acquiring region has an opaque display zone and a transparent zone, and the camera is disposed on a side, facing away from the pixel units, of the substrate of the electroluminescent display panel.

Abstract: A display panel and a display device are provided, and the display panel includes a substrate and a pixel layer disposed on the substrate. The pixel layer includes a plurality of pixel units arranged in an array. The display panel includes a main light-transmitting region surrounded by the plurality of pixel units, and an orthographic projection of the main light-transmitting region on the substrate is not overlapped with orthographic projections of the plurality of pixel units on the substrate, so that external light is allowed to pass through the main light-transmitting region of the display panel, and then is received by an image acquisition device disposed on a side of the display panel.

Abstract: The invention discloses a coordination type zirconium phosphotungstate catalyst and its application in catalytic hydrogenation of furfural, belonging to the field of heterogeneous catalysis. The zirconium phosphotungstate catalyst prepared by the invention not only has good catalytic effect on the conversion of furfural to furfuryl alcohol, but also has mild reaction conditions. The yield of solid line furfuryl alcohol can be 98% if it can be reacted for 1 h at 120 ° C., and the amount of catalyst is less, which greatly reduces the energy consumption in the prior art. In addition, the zirconium phosphotungstate prepared by the invention is easy to separate, has good stability for catalyzing the hydrogenation of furfural to furfuryl alcohol, and is a new, efficient and green catalyst.

Abstract: An antenna assembly may include an excitation source configured to generate an excitation signal, an antenna radiator including a first end and an opposing second end, a reference ground disposed corresponding to the antenna radiator, adjacent to the first end and including a first surface adjacent to the first end and an opposing second surface adjacent to the second end, a support body arranged on the second surface of the reference ground and extending along a direction from the first end to the second end, and a conductive sheet arranged on the support body, adjacent and coupled to the second end and configured to transmit the excitation signal from the excitation source to the antenna radiator, the antenna radiator may be configured to generate an electromagnetic signal according to the excitation signal.

Abstract: The present disclosure discloses the preparation and application of magnetic metallic oxide cross-linked acidic polyionic liquid, belonging to the technical field of solid acid catalysis. The catalyst prepared by the present disclosure has good Lewis acid site and Brönsted acid site, and has the characteristics of high speed, high efficiency, environment friendliness and the like when catalyzing preparation of furfural from xylose. The catalyst has the advantages of easy separation, multiple cycles of recycling and the like, and is green and pollution-free. The magnetic metal oxide cross-linked acidic polyionic liquid prepared by using the present disclosure has the characteristics of high speed, high efficiency, environment friendliness and the like when catalyzing preparation of furfural from xylose, and meanwhile, the catalyst has the advantages of easy separation, multiple cycles of recycling and the like, and is green and pollution-free.

Abstract: Disclosed are a synchronization method and device, which are used to achieve the distinction of a synchronization system and a synchronization level of a node in a V2V communication system, thereby quickly achieving the synchronization in the V2V communication system. Provided is a synchronization method, comprising: determining a synchronization priority level of a current node; and according to the synchronization priority level of the current node, determining a synchronization sequence used by the current node and a value of a distinguishing flag bit of the current node, wherein the distinguishing flag bit is used to distinguish whether the current node belongs to a GNSS synchronization system or an eNB synchronization system.

Abstract: Embodiments of this application disclose an image transcoding method performed at a computing device. The image transcoding method includes: obtaining a source image quality parameter of a source image, the source image being a to-be-transcoded image, and the source image quality parameter being associated with a source image format and used for indicating image quality of the source image; obtaining, according to the source image quality parameter and a preset mapping relationship, a target image quality parameter that is associated with a target image format and that corresponds to the source image quality parameter of the source image; and transcoding the source image in the source image format according to the target image quality parameter to obtain a target image in the target image format.

Abstract: Disclosed is a primary color conversion method, which may expand primary color signals that are applicable to a display device. The primary color conversion method includes: acquiring color coordinates and a brightness value of a first color in a first color gamut having M primary colors according to gray-scale values of the M primary colors corresponding to the first color; and mapping the color coordinates and the luminance value of the first color in the first color gamut to color coordinates and a brightness value of a second color corresponding to the first color in a second color gamut having N primary colors. 3?M, 3?N, M is different from N, and M and N are positive integers.

Abstract: The present application discloses a pipeline radar and television inspection robot which includes a robot body, a directional drilling lifting device, a directional drilling rotary device, a directional drilling swing device, a radar, cameras and a driving apparatus; wherein the directional drilling lifting device is on a front part of the robot body; the directional drilling rotary device is on the directional drilling lifting device; the directional drilling swing device is on the directional drilling rotary device; the radar and the cameras are on the directional drilling swing device; the driving apparatus are on a bottom of the robot body. The directional drilling lifting device, the radar and the cameras are plugged in the robot body. The robot body electrically connects to cables which electrically connect to a control system. The cameras and the radar are able to be adjusted and the components are connected as modules.