Abstract: The invention relates to the field of industrial wastewater treatment, and particularly discloses a nanofiltration membrane for treating printing and dyeing wastewater and its preparation method. The preparation method comprises the following steps: S1, pouring an aqueous solution containing m-phenylenediamine, camphorsulfonic acid and triethylamine onto the surface of a polysulfone ultrafiltration membrane, setting still for 10 s to 30 s, and then removing the excess aqueous solution from the surface; S2, pouring an organic solution containing trimesoyl chloride and an interface auxiliary polymerization agent onto the surface of the membrane obtained in step S1, reacting for 5 s to 20 s, and then removing the excess solution from the surface; and S3, setting the membrane obtained in step S2 still and then carrying out heat treatment and water rinsing on the membrane in sequence, thus obtaining the nanofiltration membrane.

Abstract: A method for detecting a face synthetic image, an electronic device and a storage medium are provided. The technical solution includes inputting a face image to be detected into a pre-trained convolution neural network to obtain a raw image feature of the face image; inputting the raw image feature into a first full connected layer and a second full connected layer respectively to obtain a first feature vector corresponding to a face key point of the face image and a second feature vector corresponding to the face image; merging the first feature vector and the second feature vector to obtain a merged feature vector; inputting the merged feature vector to a third full connected layer to obtain a detection result of the face image.

Abstract: A method, apparatus, and device for erasing a Solid State Disk (SSD), and a storage medium are provided. The method includes: receiving, from a Virtual Flash Translation Layer (VFTL) running in a preset virtual environment, an erasing request for erasing a target block; selecting a target spare block from preset spare blocks and feeding back the target spare block to the VFTL; collecting running information of the VFTL within a preset period of time, and determining whether a function of the VFTL is normal according to the running information; and in a case of determining that the function of the VFTL is normal, performing an erasing operation on the target block. The method may fully and comprehensively detect the abnormal condition of the VFTL, and may guarantee the integrity of data information in the solid state disk, thereby improving the reliability of the solid state disk.

Abstract: The present application provides a pixel electrode, a driving method of the pixel electrode, and a liquid crystal display panel, the pixel electrode comprises a frame electrode and a keel electrode, the frame electrode forms a closed region, the keel electrode is located in the closed region, the keel electrode comprises at least a first trunk and a second trunk vertically intersecting the first trunk, the first trunk and the second trunk divide the closed region into four sub areas, and a shape of an area composed of any two adjacent sub areas is pagoda shaped, to improve a light transmittance of the pixel electrode.

Abstract: A method of visual media processing includes determining, for a conversion between a current video block of visual media data and a bitstream representation of the current video block, a buffer that stores reference samples for prediction in an intra block copy mode; for a sample spatially located at location of the current video block relative to an upper-left position of a coding tree unit including the current video block and having a block vector, computing a corresponding reference in the buffer at a reference location, wherein the reference location is determined using the block vector and the location; and upon determining that the reference location lies outside the buffer, re-computing the reference location based at least in part on a location of the current video block relative to the coding tree unit including the current video block.

Abstract: Example uplink signal sending methods and apparatus are described. One example method includes determining, by a terminal, a symbol that needs to be punctured, and sending the uplink signal by the terminal based on the symbol that needs to be punctured. Further, the terminal may notify the source cell and/or the target cell of the symbol that needs to be punctured, so that the source cell or the target cell improves, according to a notification indication, decoding on the uplink signal sent by the terminal.

Abstract: In order to solve the problems of insufficient high-temperature storage performance and high-temperature cycle performance of the existing lithium ion battery, the present application provides a non-aqueous electrolyte for lithium ion battery, comprising a bicyclic sulfate compound and a compound A represented by structural formula 1. In structural formula 1, R3, R4, R5, R6, R7 and R8 are each independently selected from hydrogen, fluorine atom or a group containing 1˜5 carbon atoms. Meanwhile, the application also discloses a lithium ion battery comprising the non-aqueous electrolyte for lithium ion battery. The non-aqueous electrolyte for lithium ion battery provided by the application is beneficial to improving high-temperature storage and high-temperature cycle performance of battery.

Abstract: An event argument extraction (EAE) method, an EAE apparatus and an electronic device, relates to the technical field of knowledge graphs. A specific implementation scheme includes acquiring a to-be-extracted event content; and performing argument extraction on the to-be-extracted event content based on a trained EAE model, to obtain a target argument of the to-be-extracted event content; where the trained EAE model is obtained by training a pre-trained model with event news annotation data and a weight of each argument annotated in the event news annotation data.

Abstract: A low-density parity-check (LDPC) code encoding method and a communication apparatus are described that provide increased redundant bits through retransmission in an IR-HARQ mechanism, so as to decrease a channel coding rate, and improve decoding performance of an LDPC code. A check matrix of the LDPC code is used as a basic matrix, and the basic matrix is extended to obtain a mother matrix compatible with a plurality of code rates. During LDPC encoding, a transmit device reads, from the mother matrix, a check matrix corresponding to a required code rate, and performs LDPC encoding on an information bit sequence based on the read check matrix. LDPC encoding is performed on the information bit sequence by using check matrices of different sizes, to obtain different quantities of redundant bits.

Abstract: A communication method includes: generating an extremely high-throughput physical layer protocol data unit (EHT PPDU) that comprises a legacy physical layer preamble and a new physical layer preamble, wherein the legacy physical layer preamble comprises a legacy short training field (L-STF), a legacy long training field (L-LTF), a legacy signal (L-SIG) field in turn, and a first field of the new physical layer preamble is a repeat of a field in the legacy physical layer preamble and is modulated by binary phase shift keying (BPSK); and sending the PPDU.

Abstract: The present invention relates to a climbing machine and a moving method therefor. The climbing machine includes a machine body, a mechanical arm, and at least two ropes, each rope connects a suspension mechanism and the machine body; the suspension mechanism is connected to or disengaged from an object structure, the length of the rope between the suspension mechanism and the machine body is variable; through dragging or pulling of the rope, the machine body can move on the object structure; the mechanical arm connects a gripping mechanism and the machine body; the gripping mechanism can grip and move any suspension mechanism and disengage a gripped suspension mechanism. In the present invention, the machine body moves without interference, and can be pulled not only on a smooth surface but also on a hollow or bending surface, and features a simple structure, a wide application scope, and the like.

Abstract: The present application discloses a method and apparatus for updating a password of an electronic device, a device, and a storage medium, and relates to intelligent transportation, vehicle-road collaboration, and device security technologies in the field of data processing. The specific implementation solution is: in response to detecting a trigger condition of a password update, the electronic device randomly generates a first password, and updates a login password of the electronic device to the first password; then the electronic device sends a password updating message to a server, and the password updating message is configured to indicate an identification of the electronic device and the first password. The server updates the database for storing login passwords of different electronic devices according to the password updating message. Through the above process, the safety of the electronic device is improved.

Abstract: An LED UV sterilization device, including a lens assembly and a light source assembly; the lens assembly includes a plurality of lenses of different materials suitable for light of different wavelengths; the light source assembly includes a visible light source assembly and an ultraviolet light source assembly. Visible light irradiated by the visible light source assembly and invisible ultraviolet light irradiated by the ultraviolet light source assembly pass through lenses of corresponding materials and form an overlapped light spot, so that an irradiation location of the invisible ultraviolet light is indicated by the visible light. The LED UV sterilization device not only realizes safe disinfection and sterilization, but also visualizes the sterilization process. The sterilization process is safer and more reliable, and the sterilization area is more accurate.

Abstract: A wireless keyboard and mouse combo includes a wireless keyboard including a first switching switch, and a keyboard Bluetooth/transceiver chip electrically connected to the first switching switch, and a wireless mouse including a second switching switch, and a mouse Bluetooth/transceiver chip electrically connected to the second switching switch and having a direct communication connection with the keyboard Bluetooth/transceiver chip.

Abstract: Provided are a display method and apparatus, a smart wearable device, and a computer-readable storage medium, the display method being used on the smart wearable device, and the smart wearable device including at least two screen display regions and at least two corresponding audio collection units; when a user is wearing the smart wearable device, the screen display regions are not simultaneously in the same plane. The display method includes according to voice signals collected by all of the audio collection units, determining an audio collection unit nearest a sound source; turning on a screen display region corresponding to the audio collection unit nearest the sound source to display current content.