Abstract: Methods, systems, and devices for complete and incomplete superblock generation are described. A memory system may be configured to generate and access complete and incomplete superblocks by replacing invalid physical blocks with valid physical blocks from a same plane. For example, he memory system may perform a scan to determine (e.g., identify) which blocks are valid, invalid, or both. The memory system may replace invalid blocks from superblocks having a relatively small quantity of invalid blocks with blocks (e.g., blocks from a same plane) from superblocks having a relatively large quantity of invalid blocks, which may result in the generation of complete and incomplete superblocks.

Abstract: Methods, systems, and devices for zoned random write operations are described. A memory system may receive a set of write commands associated with respective logical block addresses (LBAs) that may be in a sequential order, where the respective LBAs may be associated with a zone. The memory system may write first data to a first physical block address (PBA), where the first data may be associated with a first LBA of the respective LBAs. The memory system may determine whether a second LBA associated with second data is sequential relative to a write pointer associated with the zone. The memory system may write the second data to a second PBA that may be sequential to the first PBA in response to determining that the second logical block address is non-sequential relative to the write pointer and on a value of a bitmap corresponding to the second LBA.

Abstract: The present disclosure relates to a video recording method and apparatus, a device, a storage medium, and a program product. The method comprises: in the process of video recording, acquiring a video frame to be recorded, and previewing said video frame; then determining a preview frame rate in the preview process of said video frame; if the preview frame rate is a first frame rate, encoding said video frame in a first format to obtain encoded data, and if the preview frame rate is a second frame rate, encoding said video frame in a second format to obtain encoded data, wherein the encoding frame rate corresponding to the first format is greater than the encoding frame rate corresponding to the second format; and finally, generating a recorded video on the basis of the encoded data.

Abstract: The disclosure provides a method, device, storage medium and program product for video recording. The method includes: in response to a shooting initiation instruction, placing a video frame image collected by a camera into a first video track, and displaying the video frame image in the first video track; in response to a playing instruction for a second video, placing a video frame image of the second video into a second video track, and displaying the video frame image in the second video track; in response to a pausing playing instruction for the second video, pausing placing the video frame image of the second video into the second video track; and in response to a recording instruction, synthesizing the video frame image in the first video track with the video frame image in the second video track to obtain a video frame image of a recorded video.

Abstract: A paramyxovirus vaccine strain for novel coronavirus pneumonia and a construction method thereof are provided. The method includes performing a recombination of N and F genes of Newcastle disease virus type VII of Paramyxoviridae with P, M, H, L genes of Canine distemper virus of Paramyxoviridae to obtain a recombinant virus, inserting S1 gene of the novel coronavirus between the P and M genes of the recombinant virus to obtain a recombinant vector. The vaccine strain constructed can stably and efficiently express the novel coronavirus S1 protein, and induce the body to produce antibodies; and the recombined virus vaccine strain can stimulate the human body to produce mucosal immunity, and the prepared vaccine can be vaccinated through a nasal spray. Moreover, the vaccine strain can be tested in poultry and dogs, saving time, reducing costs, and being more conducive to actual production due to large output.

Abstract: A paramyxovirus vaccine strain for novel coronavirus pneumonia and a construction method thereof are provided. The method includes performing a recombination of N and F genes of Newcastle disease virus type VII of Paramyxoviridae with P, M, H, L genes of Canine distemper virus of Paramyxoviridae to obtain a recombinant virus, inserting S1 gene of the novel coronavirus between the P and M genes of the recombinant virus to obtain a recombinant vector. The vaccine strain constructed can stably and efficiently express the novel coronavirus S1 protein, and induce the body to produce antibodies; and the recombined virus vaccine strain can stimulate the human body to produce mucosal immunity, and the prepared vaccine can be vaccinated through a nasal spray. Moreover, the vaccine strain can be tested in poultry and dogs, saving time, reducing costs, and being more conducive to actual production due to large output.

Abstract: An apparatus for pipeline construction comprises a constructing means located on the lower part of the apparatus, which includes a chest and a unit for completing the operation of construction; a feeding means located on the upper part of the apparatus, which drives the constructing means to rotate and to approach to the constructed pipe, and which includes a main shaft having a central hole, a rod placed in the central hole, a drive means as well as a rod feeding means; a base of the apparatus, the bottom of the base and the top face of the base are detachably connected with the feeding means and the constructing means respectively.