Abstract: A method of preparing a high-aluminum boron-containing die steel for severe plastic deformation of zinc alloys at elevated temperature, in which a cast ingot is obtained by sand casting, and then subjected to homogenization, austenitization, hot-die forging and cooling to obtain a heat-treated piece. The heat-treated piece is quenched and tempered to obtain a forged piece, which is subjected to finish machining to obtain the high-aluminum boron-containing die steel. A high-aluminum boron-containing die steel prepared by such method is further provided.

Abstract: A method for preparing a biodegradable zinc alloy semi-solid billet is provided, in which a biodegradable Zn—Mg—Bi—Ca—Sr zinc alloy ingot is subjected to homogenization annealing and three-directional compression deformation to obtain a uniformly-deformed three-directional upset billet. The three-directional upset billet is subjected to semi-solid isothermal heat treatment to obtain the semi-solid billet. A biodegradable zinc alloy semi-solid billet prepared by such method is also provided.

Abstract: A method is provided that includes: creating a plurality of first model instances of a first service model to be deployed; allocating an inference service for each of a plurality of first model instances from the plurality of inference services; calling, for each first model instance, a loading interface of the inference service allocated for the first model instance to mount a weight file; determining, in response to a user request for a target service model, a target model instance from a plurality of model instances of the target service model to respond to the user request; and calling a target inference service allocated for the target model instance to use computing resources configured for the target inference service to run, in the target model instance, a base model mounted with a target weight file, and obtain a request result of the user request.

Abstract: An anisotropic bonded magnet and a preparation method thereof are provided. Through a method of stacking magnets which are different in content of SmFeN and/or have different densities, the magnets in the middle have high properties and the magnets at two ends and/or the periphery have low properties, thereby compensating for a property deviation caused by a difference in densities during a pressing process, and improving the property uniformity of the magnets in an axial direction. The method avoids the phenomenon of non-uniform magnetic field orientation and density in a height direction during orientation and densification as well as the phenomenon of low in the middle and high at two ends.

Abstract: Disclosed are an organic slurry for neodymium iron boron screen printing and a preparation method. The organic slurry includes a rare earth powder, an organic solvent, a resin, a dispersant, and/or a leveling agent, weight percentages of which are as follows: rare earth powder 50%-90%; organic solvent 8%-50%; resin 0.4%-6%; dispersant 0%-5%; and leveling agent 0%-3%. The preparation method includes: sequentially adding the weighed organic solvent, resin, dispersant, and/or leveling agent into a mixer, stirring at a constant temperature, and then cooling to room temperature to obtain an organic carrier; adding the organic carrier and the weighed rare earth powder into a vacuum high-speed disperser, and dispersing at a high speed to obtain a crude organic slurry; and transferring the crude organic slurry to a gap adjustable three-roll grinder, and grinding to obtain a fine organic slurry.

Abstract: Disclosed are an organic slurry with a gradient volatilization rate and a preparation method. The organic slurry includes a rare earth powder, an organic solvent, a resin, a dispersant, and/or an anti-settling agent, and/or a synergist, weight percentages of which are as follows: rare earth powder 50%-90%; organic solvent 8%-50%; resin 0.4%-6%; dispersant 0%-5%; anti-settling agent 0%-3%; and synergist 0%-3%. The preparation method includes: weighing the rare earth powder, organic solvent, resin, dispersant, and/or anti-settling agent, and/or synergist by weight percentage; sequentially adding the weighed ingredients into a mixer, stirring at a constant temperature, and then cooling to room temperature to obtain an organic carrier; adding the organic carrier and the weighed rare earth powder into a vacuum high-speed disperser to obtain a crude organic slurry; and transferring the crude organic slurry to a gap adjustable three-roll grinder for grinding to obtain a fine organic slurry.

Abstract: The invention relates to a method and system for improving PSA/VPSA plant energy efficiency during times of reduced production demand and capital efficiency through optimizing feed, vacuum, and centrifugal product compressors to achieve lower energy consumption and lower unit gas product production cost. More specifically, the present invention relates to a new energy efficient PSA/VPSA turn down process and system which employs high speed direct drive centrifugal product compressor to achieve desired production. Significant lower energy consumption can be achieved by employing lower flow, and lower adsorption top pressure in the lower production range.

Abstract: The present invention discloses an yttrium-added rare earth permanent magnet material and a preparation method therefor. The chemical formula of the material is expressed as (YxRe1-x)aFe100-a-b-cMbBc according to the mass percentage, wherein 0.05?x?0.5, 20?a?28, 0.5?b?2, 0.5?c?1.5, Re is Nd and/or Pr, and M is Al and/or Nb. According to the present invention, the relatively surplus and inexpensive rare earths yttrium and cerium are used to replace Nd and/or Pr in NdFeB. By controlling the ratio of the rare earth elements such as yttrium, cerium and neodymium, and adding an appropriate amount of Nb and/or Al element, the rare earth elements are used in a comprehensive and balanced manner while better magnetic properties are maintained.

Abstract: The present disclosure provides an image registration method and system for navigation in femoral neck fracture surgery, an electronic device, and a computer-readable storage medium. The method includes: obtaining femoral image data by a computed tomography (CT) imaging device before surgery and obtaining a surgical path planned by a doctor to generate a three-dimensional femoral image with the surgical path; obtaining, during the surgery, X-ray images photographed by an X-ray machine at different angles, and extracting feature points on each of the X-ray images; setting digitally reconstructured radiograph (DRR) virtual scene projection parameters based on a structure of the X-ray machine, projecting the three-dimensional femoral image with the surgical path to generate a plurality of DRR images, and extracting feature points on each of the DRR images; and automatically registering the DRR image and the X-ray image, and outputting a surgical path after registration.

Abstract: A synchronous rectification controller and a switching power supply are provided. The synchronous rectification controller includes: a power switch transistor, a drive circuit, a power supply control circuit, and a switch circuit including a plurality of power supply switch transistors; wherein the drive circuit is configured to control an on or off state of the power switch transistor, to make the synchronous rectification controller perform synchronous rectification or stop synchronous rectification; and the power supply control circuit is configured to control an on or off state of each power supply switch transistor in the switch circuit. With embodiments of the present disclosure, energy conversion efficiency may be improved to realize efficient power supply.

Abstract: The present invention relates to the production of steviol glycoside rebaudiosides D4, WB1 and WB2 and the production of rebaudioside M from Reb D4.

Abstract: Disclosed are anisotropic samarium-iron-nitrogen magnetic alloy powder and a preparation method therefor. The anisotropic samarium-iron-nitrogen magnetic alloy powder has a chemical formula of Sm2Fe17N3, and has a Th2Zn17 crystal structure. In the alloy powder, the granularity is: D90?5 ?m and D10?0.5 ?m, the average sphericity ?0.7, the coercivity Hcj?10 kOe, and the square degree Q?0.5. The preparation method includes: S1: mixing iron powder, samarium oxide powder and calcium granules uniformly; S2: placing the mixture into a rotating heat treatment furnace, adding high-temperature-resistant balls, performing vacuumizing, introducing a reductive diffusion protective gas, and heating a furnace body; S3: cooling the furnace body, performing vacuumizing, and introducing a nitriding gas; and S4: taking out and separating the cooled powder and balls, washing the powder, and drying the powder in a vacuum environment to obtain the anisotropic samarium-iron-nitrogen magnetic alloy powder.

Abstract: Disclosed are a gradient ring-shaped bonded magnet and a preparation method therefor, and a motor. The gradient ring-shaped bonded magnet includes: a magnet body and at least one reinforcement layer. The magnet body is a ring-shaped cylinder; the reinforcement layer is in pressing fit with a surface of the magnet body; a material of the magnet body is a first permanent magnet, and a material of the reinforcement layer is a second permanent magnet; and the coercivity property, the remanence property and/or the maximum working temperature of the second permanent magnet are/is higher than those of the first permanent magnet.

Abstract: An imaging lens assembly includes lens elements, a metal spacing structure and at least one blocking sheet. At least one lens element is a plastic lens element. The metal spacing structure is for maintaining the plastic lens element in a space between two sides thereof and two of the lens elements adjacent thereto, respectively. The metal spacing structure includes, in order from an object side to an image side, a first spacing ring having a first through hole and a second spacing ring having a second through hole, wherein the second through hole is larger than the first through hole. At least one of the first spacing ring and the second spacing ring is made of metal material. The blocking sheet is disposed between two of the lens elements, and is not disposed between the first spacing ring and the second spacing ring.

Abstract: A thermal system includes a system component, a working medium, a second-level thermal component, and a working medium transmission component. The system component includes a first-level thermal component and a working medium driver. The working medium driver is configured to drive the working medium to flow through a primary flow-through structure, a secondary flow-through structure, and a transmission channel in the working medium transmission component, and the thickness of the working medium driver is less than or equal to 5 mm.

Abstract: A method for preparing a rare earth anisotropic bonded magnetic powder, comprises the following steps: (1) preparing raw powder with RTBH as the main component, wherein, R is Nd or Pr/Nd, and T is a transition metal containing Fe; (2) adding La hydride or Ce hydride and copper powder to the raw powder to form a mixture; (3) subjecting the mixture to atmosphere diffusion heat treatment to give the rare earth anisotropic bonded magnetic powder.

Abstract: The invention discloses a composite rare earth anisotropic bonded magnet and a preparation method thereof. The composite rare earth anisotropic bonded magnet comprises a Nd—Fe—B magnetic powder, a Sm—Fe—N magnetic powder, a binder and an inorganic nano-dispersant. The preparation method comprises steps of preparing a Nd—Fe—B magnetic powder by a HDDR method, preparing a Sm—Fe—N magnetic powder by a powder metallurgy method, mixing the Nd—Fe—B magnetic powder, the Sm—Fe—N magnetic powder, the binder and the inorganic nano-dispersant at a specific ratio to finally obtain the composite rare earth anisotropic bonded magnet. The invention, by adding an inorganic nano-dispersant, enables the full dispersion of the fine Sm—Fe—N powder during the mixing process of the binder, the Nd—Fe—B magnetic powder and the Sm—Fe—N powder, and thus makes the fine Sm—Fe—N powder and the binder evenly coated on the surface of the anisotropic Nd—Fe—B magnetic powder.

Abstract: The present invention relates to the production of steviol glycoside rebaudiosides D4, WB1 and WB2 and the production of rebaudioside M from Reb D4.

Abstract: In some examples, with respect to asymmetric-man-in-the-middle capture based application sharing protocol traffic recordation, a dynamic-link library that alters application programming interface calls with respect to communication between an application sharing protocol client and an application sharing protocol server may be injected into the application sharing protocol client. Based on the injected dynamic-link library, data from the communication between the application sharing protocol client and the application sharing protocol server may be ascertained. Further, based on the ascertained data, a test script may be generated to test operation of an application associated with the communication between the application sharing protocol client and the application sharing protocol server.