Abstract: The disclosure relates to fatty diols and recombinant microorganisms for producing them. More particularly, the disclosure relates to recombinant microorganisms engineered to produce fatty diols via fermentation. Further encompassed is a process that uses the microorganisms to produce fatty diols from a simple carbon source.

Abstract: A gene related to biosynthesis of ergothioneine is provided. Based on five synthesis genes of ergothioneine in Mycobacteroides abscessus, only an encoding sequence of each of the five genes is retained, and a gene structure of an encoding region in each gene is optimized to obtain genes related to the biosynthesis of the ergothioneine that are stably expressed in rice. These genes have sequences set forth in SEQ ID NO: 1 to SEQ ID NO: 5, and encoded proteins thereof have amino acid sequences set forth in SEQ ID NO: 6 to SEQ ID NO: 10. The gene is transferred into rice to construct a transgenic rice molecular farm to produce the ergothioneine. As a molecular farm, rice seeds do not contain alkaloids or allergens that are harmful to the human body. Moreover, biosynthesized ergothioneine shows the advantages of easy extraction and processing and of low production cost.

Abstract: The present application provides a method for signing an application, and a transaction terminal. The method includes receiving a download request that is sent by a transaction terminal, and the download request comprising an identification of an application to be installed, and determining an installation package of the application to be installed corresponding to the download request according to the identification, and obtaining signature data associated with the installation package and sending the installation package and the signature data to the transaction terminal, the installation package and the signature data indicating that the transaction terminal obtains a signed application package by combining the installation package and the signature data and installs the installation package after the signed application package is verified.

Abstract: A Free Viewpoint Video (FVV) generation and interaction method based on a deep Convolutional Neural Network (CNN) includes the steps of: acquiring multi-viewpoint data of a target scene by a synchronous shooting system with a multi-camera array arranged accordingly to obtain groups of synchronous video frame sequences from a plurality of viewpoints, and rectifying baselines of the sequences at pixel level in batches; extracting, by encoding and decoding network structures, features of each group of viewpoint images input into a designed and trained deep CNN model, to obtain deep feature information of the scene, and combining the information with the input images to generate a virtual viewpoint image between each group of adjacent physical viewpoints at every moment; and synthesizing all viewpoints into frames of the FVV based on time and spatial position of viewpoints by stitching matrices. The method does not require camera rectification and depth image calculation.

Abstract: The split type precisely-anchorable transcatheter tricuspid valve system comprises a split transcatheter tricuspid valve anchoring stent (10) and a transcatheter artificial biological tricuspid valve (20), wherein the shape and structure of the transcatheter tricuspid valve anchoring stent (10) are matched with the tricuspid valve real structure after the patient's image data is subjected to three-dimensional reconstruction, the transcatheter tricuspid valve anchoring stent (10) is firstly delivered to the tricuspid valve site of the patient to be released, deformed and personalized and precise alignment with a supravalvular (40) and subvalvular (50) tissue of the patient's tricuspid valve site; the transcatheter artificial biological tricuspid valve (20) is delivered into the transcatheter tricuspid valve anchoring stent (10) to be released, and the transcatheter artificial biological tricuspid valve (20) is released and deformed and expanded to a functional state, the transcatheter tricuspid valve anchoring

Abstract: A plasma processing device includes: a vacuum processing chamber internally provided with a movable lower electrode assembly; a movable grounding ring arranged at a bottom of the movable lower electrode assembly; a fixed grounding ring arranged below the movable grounding ring; a retractable sealing assembly arranged between the movable grounding ring and the fixed grounding ring; a conductive connector used for forming a radio frequency path between the movable grounding ring and the fixed grounding ring, where a distance between an outer wall of the retractable sealing assembly and a central axis of the vacuum processing chamber is less than an outer diameter of the movable grounding ring; and a match with a radio frequency transmitting end and a radio frequency receiving end of a radio frequency circuit.

Abstract: A gas water heater includes a bottom housing having an opening, a burner mounted at the bottom housing, and a cover plate assembly mounted at the bottom housing and covering the opening. The cover plate assembly includes a first cover plate and a second cover plate. The second cover plate is located between the burner and the first cover plate. The cover plate assembly has an air inlet channel located between the first cover plate and the second cover plate. The first cover plate has a first flow inlet in communication with the air inlet channel. The second cover plate has a second flow inlet distant from the first flow inlet, and in communication with the air inlet channel and an air inlet of the burner.

Abstract: The disclosure relates to omega-hydroxylated fatty acid derivatives and methods of producing them. Herein, the disclosure encompasses a novel and environmentally friendly production method that provides omega-hydroxylated fatty acid derivatives at high purity and yield. Further encompassed are recombinant microorganisms that produce omega-hydroxylated fatty acid derivatives through selective fermentation.

Abstract: Systems and methods for data storage in a storage device are provided in the present disclosure. The method may include dividing the storage device into a recording region and a shingled magnetic recording (SMR) region. The SMR region may be configured to store data, and the recording region may be configured to store storage information associated with the storage device. The storage information may include at least a corresponding relationship between an index of the data and a storage location of the data. The method may also include obtaining target data to be stored. The method may further include determining, based on the target data and the storage information, a target position in the SMR region for storing the target data.

Abstract: The present disclosure provides methods, systems, devices, and media for data processing. The method may include obtaining information of one or more hard disks of each of one or more data nodes, the information of the one or more hard disks at least including type information, capacity information, and location information of each of the one or more hard disks; determining, based on a data processing instruction and the information of the one or more hard disks, target information of a target hard disk among the one or more hard disks; and transmitting the data processing instruction including the target information of the target hard disk to a target data node corresponding to the target hard disk.

Abstract: The present disclosure describes the engineering of microbial cells for fermentative production of ectoine and provides novel engineered microbial cells and cultures, as well as related ectoine production methods.

Abstract: Provided are a tour guiding method and apparatus, an electronic device and a storage medium. The method includes receiving a video stream collected by a user in a current location area of a target scenic spot and sent by an application device; determining, based on the collected video stream and prestored three-dimensional point cloud data of the target scenic spot, an augmented-reality-based content resource package corresponding to the current location area, where the augmented-reality-based content resource package includes at least six-degrees-of-freedom attitude data of the application device; and sending the augmented-reality-based content resource package corresponding to the current location area to the application device to enable the application device to provide the augmented-reality-based content resource package corresponding to the front location area for the user.

Abstract: A display driving circuit includes a light emitting assembly which includes a first control switch having a first terminal connected to a cathode of the light emitting unit, a second terminal connected to a common terminal, and a control terminal connected to a first signal wire to provide a first control signal and a second control switch having a first terminal connected to a charging terminal, a second terminal connected to an anode of the light emitting unit and a control terminal connected to a second signal wire to provide a second control signal. When the light emitting unit is turned off, the first control switch disconnects the cathode of the light emitting unit and the common terminal in response to the first control signal, and the second control switch disconnects the anode of the light emitting unit and the charging terminal in response to the second control signal.

Abstract: A positioning method, a method for generating a visual map and an apparatus thereof includes: obtaining a current parking space number corresponding to a parking space image; obtaining a three-dimensional (3D) coordinate and a 3D pose of the current parking space number under a world coordinate system based on the current parking space number and a visual map, in which the visual map is generated based on current parking space numbers; obtaining a first conversion matrix from a camera coordinate system to a current parking space number coordinate system, in which the current parking space number coordinate system is generated based on the current parking space number; and determining a 3D coordinate and a 3D pose of a camera under the world coordinate system based on the first conversion matrix and the 3D coordinate and 3D pose of the current parking space number.

Abstract: Disclosed are a plasma processing device and a retractable sealing part thereof. The retractable sealing part is arranged in or near a radio-frequency circuit of the plasma processing device. The retractable sealing part includes a bellows assembly having a first end and a second end. Isolation rings are added to an upper part and a lower part of the bellows assembly to weaken longitudinal radio-frequency coupling. Metal sleeves are added to an inner side and an outer side of the bellows assembly to shield transverse radio-frequency coupling. The present disclosure effectively shields radio-frequency coupling on the basis of maintaining the functions of vacuum isolation and extension and retraction of the retractable sealing part, thereby obtaining the stable radio-frequency circuit and etching rate.

Abstract: Embodiments of the present disclosure provides a method and apparatus for constructing a map. The method may include: determining pose information of each panoramic image frame from a panoramic image sequence of a target area, and determining a perspective image sequence from each panoramic image frame; determining a feature track corresponding to the panoramic image sequence based on perspective image sequences corresponding to adjacent panoramic image frames; and constructing a visual map of the target area based on the feature track and the pose information of each panoramic image frame.

Abstract: The present disclosure describes the engineering of microbial cells for fermentative production of 2-oxoadipate and provides novel engineered microbial cells and cultures, as well as related 2-oxoadipate production methods.

Abstract: The present disclosure describes the engineering of microbial cells for fermentative production of 1,5-diaminopentane and provides novel engineered microbial cells and cultures, as well as related 1,5-diaminopentane production methods.

Abstract: Provided are a tour guiding method and apparatus, an electronic device and a storage medium. The method includes receiving a video stream collected by a user in a current location area of a target scenic spot and sent by an application device; determining, based on the collected video stream and prestored three-dimensional point cloud data of the target scenic spot, an augmented-reality-based content resource package corresponding to the current location area, where the augmented-reality-based content resource package includes at least six-degrees-of-freedom attitude data of the application device; and sending the augmented-reality-based content resource package corresponding to the current location area to the application device to enable the application device to provide the augmented-reality-based content resource package corresponding to the front location area for the user.