Abstract: The present disclosure provides a gene combination for expressing and producing terrequinone A in Escherichia coli and use thereof. The gene combination includes a tdiAS gene, a tdiBS gene, a tdiCS gene, a tdiDS gene, a tdiES gene, an sfpS gene, an ScCKS gene, and an AtIPKS gene with nucleotide sequences set forth in SEQ ID NOS:1 to 8. In the present disclosure, a recombinant engineered strain capable of producing terrequinone A having anti-cancer activity is obtained by separately constructing recombinant plasmids pC02 and pU03 through the eight genes and transforming the two recombinant plasmids into E. coli. The content of terrequinone A in a fermentation broth thereof is 106.3 mg/L, which has potential application value in the biopharmaceutical field.

Abstract: An electronic device for managing gateways comprises: a processor; and a computer-readable storage medium which contains executable instructions which, when executed by the processor, causes the electronic device to: determine whether the current time falls within the specified sleep time interval; in response to determining that the current time falls within the specified sleep time interval, determine whether the first extender node among one or a plurality of extender nodes is in an idle connection state, wherein the idle connection state includes: the first extender node being not connected to any client, or the first extender node being only connected to a sleeping client; and sending a sleep command to the first extender node based at least in part on the idle connection state of the first extender node, wherein the sleep command instructs the first extender node to power off a wireless network interface of the first extender node.

Abstract: In the embodiments of the present application, an electrolyte, a lithium-ion battery comprising the electrolyte, a battery module, a battery pack, and a device are provided. The electrolyte in the embodiments of the present application comprises an organic solvent, an electrolyte lithium salt dissolved in the organic solvent, and an additive comprising a first additive and a second additive. The first additive is selected from one or more of the compounds represented by formula I, and the second additive is selected from one or more of the compounds represented by formula II. After applying the electrolyte of the present application to a lithium-ion battery, the lithium ion battery has a better cycle performance and storage performance at a high temperature, and lower direct-current impedance at a low temperature, such that the lithium ion battery has both a better high-temperature performance and a better low-temperature performance.

Abstract: The present disclosure discloses a rolling ring shrink fitting tool for rotary equipment, including a lifting frame; a movement slot is formed in a bottom surface of a top of the lifting frame; an output end of a first motor is connected with a main gear; guide rollers are embedded in a lifting seat through bearings; shrink fitting plates are two semicircular structures; lifting lugs are welded on outer sides of the shrink fitting plates; tooth rings are arranged outside the shrink fitting plates; stop rods are fixed on inner walls of the tooth rings; supporting screw rods are embedded at sunken positions on inner walls of the shrink fitting plates through bearings.

Abstract: A multi-source self-adaptive low-stress additive manufacturing apparatus including a multi-axis manipulator additive manufacturing system, a high-energy sound beam regulation system, a substrate and a self-adaptive additive manufacturing workbench. The multi-axis manipulator additive manufacturing system includes multi-axis manipulator(s), welding torch(es), manipulator controller(s) and a guide rail, where base(s) of the multi-axis manipulator(s) is connected with the guide rail, the welding torch(es) is held by distal end(s) of the multi-axis manipulator(s), the multi-axis manipulator(s) is controlled by the manipulator controller(s) to move the welding torch(es) to conduct low-stress additive manufacturing on the workpiece to be additive manufactured.

Abstract: The present disclosure relates to a water surface foldable emergency-built runway, including a storage box; a folding runway having an unfolding state and a folding state; a recovery apparatus, being provided in the storage box and connected with the folding runway to push the folding runway out of the storage box or recover into the storage box; a contractile apparatus, being provided on the folding runway to assist the folding runway to be unfolded or folded; an inflation and deflation apparatus, being provided in the storage box and communicated with the interior of the folding runway to inflate or deflate the folding runway; and an anchoring apparatus, being provided at a bottom face of the folding runway to fix the folding runway in water. It has advantages of low cost, convenient transportation, short construction time, strong overturning resistance, compression resistance and flex resistance.

Abstract: A tunnel operation robot includes a robot body, a walking module, a fixed wing module and a plurality of rotatable wing modules. Both sides of the robot body are provided with cantilever parts, which are collinearly arranged. The walking module is arranged on the robot body. The fixed wing module includes a fixed fan, is fixedly arranged on the robot body, and is configured to provide a pressure for the walking module to be attached to and pressed against the tunnel wall surface. The plurality of rotatable wing modules are respectively arranged on the cantilever parts on both sides of the robot body, and include a rotatable rotating fan and a wind direction adjustment driver. Each rotating fan has a rotation axis parallel to the cantilever parts and an air outlet direction perpendicular to the cantilever parts, and the wind direction adjustment driver is connected to the rotating fan.

Abstract: A packaging device includes a first circuit substrate and a second circuit substrate that are electrically connected. The first circuit substrate includes a first line layer and a first insulation layer that are sequentially stacked, and a first electronic component is disposed on the first circuit substrate. The second circuit substrate includes a second line layer and a second insulation layer that are sequentially stacked, and a second electronic component is disposed on the second circuit substrate. A thermal conductivity of the first insulation layer is higher than a thermal conductivity of the second insulation layer. This application further provides a packaging module and an electronic device in which the packaging device is used. The packaging device in this application, the first insulation layer and the second insulation layer with different thermal conductivities are targetedly configured, and layouts of the first circuit substrate and the second circuit substrate are flexible.

Abstract: This disclosure relates to an X-ray reflectometry apparatus and a method for measuring a three-dimensional nanostructure on a flat substrate. The X-ray reflectometry apparatus comprises an X-ray source, an X-ray reflector, a 2-dimensional X-ray detector, and a two-axis moving device. The X-ray source is for emitting X-ray. The X-ray reflector is configured for reflecting the X-ray onto a sample surface. The 2-dimensional X-ray detector is configured to collect a reflecting X-ray signal from the sample surface. The two-axis moving device is configured to control two-axis directions of the 2-dimensional X-ray detector to move on at least one of x-axis and z-axis with a formula concerning an incident angle of the X-ray with respect to the sample surface for collecting the reflecting X-ray signal.

Abstract: A method includes: A station receives a trigger frame from an access point. The trigger frame is used to trigger the station to perform EHT TB PPDU transmission, the trigger frame further indicates a resource unit allocated to the station, and the trigger frame includes first indication information indicating that the station can perform EHT TB PPDU transmission on a portion of the allocated resource unit. The station sends an EHT TB PPDU based on an indication of the first indication information.

Abstract: A communication method includes: a first device obtains transmission states of first n data packets by using a first protocol layer entity, where the first protocol layer entity includes a radio link control (RLC) layer entity or an entity above an RLC layer; the first device starts a timer if transmission states of m data packets in the first n data packets are transmission failures, where n and m are both positive integers, and m is less than or equal to n; and the first device determines a radio resource configuration parameter used to transmit a subsequent data packet, or sends a first message to a second device, where the first message is used to indicate a state of the timer, and the state of the timer is used to determine the radio resource configuration parameter used to transmit the subsequent data packet.

Abstract: A fingerprint recognizing display panel and a fingerprint recognizing display are proposed. The fingerprint recognizing display panel includes a display substrate. The display substrate includes a cathode. A first fingerprint recognizing electrode is arranged on a same layer as the cathode, and a second fingerprint recognizing electrode is arranged vertically aligned to the first fingerprint recognizing electrode. By arranging the first fingerprint recognizing electrode on the same layer as the cathode of the display panel, the display panel is better integrated, and an overall thickness and production cost of the display panel are reduced.

Abstract: Embodiments of this application disclose a board, an optical module, a media access control (MAC) chip, a digital signal processor (DSP), and an information processing method. The board in the embodiments of this application includes a MAC chip, a DSP, and an equalizer. The MAC chip is configured to send first information to the DSP at an optical network unit (ONU) online stage, where the first information includes a first ONU identifier. The DSP is configured to receive the first information, and determine a first reference equalization parameter, where the first reference equalization parameter is related to the first ONU identifier. The DSP is further configured to set an equalization parameter of the equalizer to the first reference equalization parameter.

Abstract: Examples described herein relate to offload reliable transport management to a network interface device and store packets to be resent, based on received packet receipt acknowledgements (ACKs), into one or more kernel space queues that are also accessible in user space.

Abstract: The present disclosure relates to a positioning method, a positioning server, and a positioning system. The positioning method includes: receiving a wireless positioning coordinate of a moving object; determining a visual sub-map to be matched in a visual map database based on the wireless positioning coordinate; and obtaining a visual positioning coordinates corresponding to a current image of the moving object captured at time of wireless positioning as a positioning result, based on the determined visual sub-map to be matched.

Abstract: A display panel includes a plurality of pixel repeating units. Each of the pixel repeating units includes a first repeating unit. The first repeating unit includes a first sub-pixel, a second sub-pixel, and two third sub-pixels for displaying different colors. In the first repeating unit, a center of the first sub-pixel, a center of the second sub-pixel, and centers of the two third sub-pixel form a first virtual quadrilateral, with the two third sub-pixels located at diagonal corners of the first virtual quadrilateral.

Abstract: The present disclosure provides a video processing method and apparatus, a device, and a storage medium. The method comprises: when a target video is being played back, displaying a playback progress bar in a preset countdown mode, wherein the playback progress bar does not support adjustment of a playback progress function; and if detected that playback of a last frame of the target video has ended, then stopping the playback of the target video, displaying a mask layer on a video picture of the last frame of the target video, and displaying preset prompt information on the mask layer, wherein the preset prompt information is used for prompting that the target video only supports playback once.

Abstract: A photosensitive assembly includes a circuit board. The circuit board has a first surface, a second surface opposite to the first surface, and a first through hole extending through the first surface and the second surface. A photosensitive chip is disposed on the second surface. The photosensitive chip has a photosensitive area and a non-photosensitive area connected to the photosensitive area, the non-photosensitive area is electrically connected to one side of the second surface, and the photosensitive area is exposed from the first through hole. A reinforcing plate is disposed on the first surface. A thermal conductive layer is disposed on the photosensitive chip, and the thermal conductive layer includes a silica gel or a metal.

Abstract: Disclosed are a rod-shaped sodium ion positive electrode material, a preparation method therefor and an application thereof. The material comprises a rod-shaped base material and nanofibers inserted into the base material. C—Na is loaded on the nanofibers. The chemical general formula of the rod-shaped sodium ion positive electrode material is Na(FeaTb)PO4/CNF-c(C—Na), and 0.001?c?0.1, wherein T is at least one of Ni, Co, Zn, Mn, Fe, V, Ti or Mo, 0.9?a<1, 0<b?0.2, and 0.001?c?0.1. In the present invention, on one hand, some transition metal elements are doped to improve the electrochemical performance thereof, and on the other hand, a modulator is added to synthesize the rod-shaped sodium ion positive electrode material, and the C—Na loaded nanofibers are added to adjust the proportion of large and small rod-shaped materials, so that the composition of a single Na(FeaTb)PO4 rod-shaped nanostructure is optimized.