Abstract: Disclosed is a method for partially regenerating a catalyst for methanol and/or dimethyl ether-to-olefin. The method comprises: introducing a mixed gas into a regenerated region containing a catalyst to be regenerated, and subjecting same to a partial regeneration reaction to obtain a regenerated catalyst, wherein the mixed gas contains water vapor and air; and in the regenerated catalyst, the coke content of at least part of the regenerated catalyst is greater than 1%. The method utilizes the coupling of a mixed gas of water vapor and air to activate a deactivated catalyst, selectively eliminate part of a coke deposit in the catalyst to be regenerated, and obtain a partially regenerated catalyst for methanol-to-olefin. Another aspect of the present invention is that further provided is a method for methanol and/or dimethyl ether-to-olefin by using the partially regenerated catalyst for methanol-to-olefin regenerated by means of the method.

Abstract: An active control method and device for large deformation of a deep thin-bedded surrounding rock, the active control method includes: drill holes in the surrounding rock of a tunnel against a tunnel face, add the active control device containing a sleeve, a high-strength prestressed anchor bolt, a resin anchoring agent and a grouting device into drill holes, apply a preload to the anchor bolt when the resin anchoring agent has a certain strength, and carry out lag grouting in the surrounding rock through the grouting device after stress adjustment, and the high-strength prestressed anchor bolt and the grouting device are inserted in the sleeve with holes on the side. The active control device or method of the invention can effectively reduce the fracture depth and degree of a thin-bedded soft rock in deep engineering, and effectively inhibit the occurrence of large deformation disasters.

Abstract: Described herein are MAT2A inhibitors and pharmaceutical compositions comprising said inhibitors. The subject compounds and compositions are useful for the treatment of a disease or disorder associated with MAT2A.

Abstract: Provided are an auxiliary alloy casting piece, a high-remanence and high-coercive force NdFeB permanent magnet, and preparation methods thereof. The method for preparing the auxiliary alloy casting piece includes the following steps: providing an auxiliary alloy material including, by mass percentage, 40% to 45% of Pr, 1% to 2% of Co, 0.5% to 1% of Ga, 0.6% to 0.8% of B, 0.1% to 0.2% of V, 0.3% to 0.7% of Ti, and a balance of Fe; smelting the auxiliary alloy material to obtain a smelted material; and subjecting the smelted material to a quick-setting casting to obtain the auxiliary alloy casting piece; where the quick-setting casting includes a refining and a casting in sequence.

Abstract: A back drilling processing method for a circuit board includes: obtaining a board to be back drilled, wherein the board includes a target signal layer and at least two conductive reference layers; drilling a through hole at a set position of the board, and obtaining an actually measured spacing between two conductive reference layers; in response to a hole to be back drilled being of a first type, determining a target back drilling depth; controlling a drilling bit to drill for the target back drilling depth towards the target signal layer; in response to the hole to be back drilled being of a second type, determining a target relative height of a back drilling end point relative to a machine; and controlling the drilling bit to drill for the target relative height towards the target signal layer. The back drilling does not drill through the target signal layer.

Abstract: There is provided a holographic optical element including: a hologram portion including a plurality of groups of unit regions, each group of unit regions of the hologram portion being configured to produce a respective holographic image under a respective light illumination having a respective predetermined wavelength; and a colour filter portion formed on the hologram portion, the colour filter portion including a plurality of groups of unit regions, each group of unit regions of the colour filter portion being arranged on a corresponding group of the plurality of groups of unit regions of the hologram portion, whereby the plurality of groups of unit regions of the colour filter portion is spatially arranged to form a predetermined colour image. There is also provided a method of forming the holographic optical element. There is further provided an article having optical security incorporated therein.

Abstract: A ranging method and an apparatus thereof, a storage medium, and a terminal device. By adding a processing unit into a hardware abstraction layer of the terminal device, a software method is thus used to replace a physical proximity sensor (Psensor); in addition, costs are effectively reduced.

Abstract: The present disclosure provides a scalable and cost-effective method of purifying recombinant viruses, such as recombinant lentiviruses. Also provided herein are recombinant viruses (e.g., lentiviruses) purified using the methods provided herein, which have a low level of impurities and high activity retention.

Abstract: There is provided a method of forming a patterned structure on a substrate. The method includes: forming a resist layer on the substrate, the resist layer being a negative tone resist; exposing a first portion of the resist layer to a focused electron beam to form a modified first portion, the modified first portion defining a boundary of a second portion of the resist layer; performing a plasma treatment on a surface of the resist layer, including on a surface of the second portion of the resist layer to form a modified surface portion of the second portion of the resist layer, resulting in a plasma treated resist layer; and performing development of the plasma treated resist layer to form the patterned structure on the substrate corresponding the second portion of the resist layer.

Abstract: Disclosed are an extendable and retractable fairing for a container ship and a control method thereof. The extendable and retractable fairing includes a controller, a support skeleton, a wind velocity detector, a first flexible deflector, second and third flexible deflectors, and accommodation mechanisms. The third flexible deflectors are sequentially arranged between the first and second flexible deflectors; the support skeleton includes guide-track grooves; the second and third flexible deflectors each are slidably provided in a corresponding guide-track groove; the accommodation mechanisms each include an accommodation winding tube and a drive motor; the accommodation winding tube is provided at one side of a deck at the bow; the drive motor is connected to the accommodation winding tube; the wind velocity detector is provided on the first flexible deflector; and the second and third flexible deflectors each are provided in the accommodation winding tube.

Abstract: Disclosed are an extendable and retractable fairing for a container ship and a control method thereof. The extendable and retractable fairing includes a controller, a support skeleton, a wind velocity detector, a first flexible deflector, second and third flexible deflectors, and accommodation mechanisms. The third flexible deflectors are sequentially arranged between the first and second flexible deflectors; the support skeleton includes guide-track grooves; the second and third flexible deflectors each are slidably provided in a corresponding guide-track groove; the accommodation mechanisms each include an accommodation winding tube and a drive motor; the accommodation winding tube is provided at one side of a deck at the bow; the drive motor is connected to the accommodation winding tube; the wind velocity detector is provided on the first flexible deflector; and the second and third flexible deflectors each are provided in the accommodation winding tube.

Abstract: The invention provides a suspended catamaran target boat, including a deck, a suspension structure and two buoyancy units, the suspension structure is connected to upper sides of the two buoyancy units, and the deck is mounted on the suspension structure; the suspension structure includes at least two suspension assemblies including an upper base, a lower base and two support rods. The support rods are hinged between the upper base and the lower base, and the upper base, the lower base and the two support rods form a four-bar linkage mechanism, where a shock absorber and a restricting mechanism are installed between the upper base and the lower base. The deck is provided with a main controller, an acceleration sensor and a heel sensor, and the main controller is respectively electrically connected with the acceleration sensor, the heel sensor and each of the restricting mechanisms of the two suspension assemblies.

Abstract: Hub lifting and pick-and-place equipment includes a fixed plate. The lower portion of the fixed plate is connected with a vertical plate. One side of the bottom of the vertical plate is fixedly connected with a fixed frame. The bottom of the vertical plate is hinged with a safety plate. The safety plate and the vertical plate are also connected with each other through shielding oil cylinders. A wire holder is mounted on one side of the vertical plate.

Abstract: The present disclosure is directed to a degradable 3D-printable scaffold for use in tissue engineering, which scaffold has a combined gradient and staggered structure. Further provided is a medical device for use in tissue engineering, comprising such a scaffold. The present disclosure also provides a method for preparing a scaffold by additive manufacturing, e.g. 3D-printing, a method for in vivo tissue engineering, use of the scaffold in an in vitro cell culture system, in an in vitro method for culturing of cells and/or in an in vitro method for regenerating tissue. Also provided is a scaffold and a medical device for use in a method for in vivo tissue engineering. Further disclosed is a novel degradable copolymer of ?-caprolactone and p-dioxanone, which can be printed without degradation and which is particularly suitable for use as scaffold material in the scaffold and method according to the present disclosure.

Abstract: The positioning detection device includes a positioning detection combination, a plurality of positioning sheets, an origin position, a negative limit, a positive limit, a controller and an encoder. The positioning material moving system is provided on the basis of the positioning detection device.

Abstract: A diversified assembly printed circuit board includes a first printed circuit board provided with a multiple first conductive metals protruding from a surface of the first printed circuit board, and a multiple second printed circuit boards each provided with a multiple second conductive metals protruding from a surface of the each of the second printed circuit boards. At a connection position, solidified conductive metal paste is arranged between each of the first conductive metals and a corresponding second conductive metal to electrically connect each of the first conductive metals and the corresponding second conductive metal. A laminated adhesive sheet is arranged between each of the second printed circuit boards and the first printed circuit board to physically connect the second printed circuit boards and the first printed circuit board.

Abstract: Provided is a double-station cleaning system comprising a cleaning machine, wherein workpieces are placed into the feeding frames, the feeding frames are placed into trays, the bracket assembly is pushed to drive the trays to move along the guide rail assembly, the feeding frame in one of the trays is conveyed to a feeding inlet of the cleaning machine, the feeding frame is pushed to move along two rows of nylon wheels and linear guide rails inside the cleaning machine, and the feeding frame and the workpieces in the feeding frame are pushed into the cleaning machine so as to be cleaned. The double stations work alternately, so that the work time is saved, and the work efficiency is increased.

Abstract: There is provided a method of forming a patterned structure on a substrate. The method includes: forming a resist layer on the substrate, the resist layer being a negative tone resist; exposing a first portion of the resist layer to a focused electron beam to form a modified first portion, the modified first portion defining a boundary of a second portion of the resist layer; performing a plasma treatment on a surface of the resist layer, including on a surface of the second portion of the resist layer to form a modified surface portion of the second portion of the resist layer, resulting in a plasma treated resist layer; and performing development of the plasma treated resist layer to form the patterned structure on the substrate corresponding the second portion of the resist layer.

Abstract: There is provided a holographic optical element including: a hologram portion including a plurality of groups of unit regions, each group of unit regions of the hologram portion being configured to produce a respective holographic image under a respective light illumination having a respective predetermined wavelength; and a colour filter portion formed on the hologram portion, the colour filter portion including a plurality of groups of unit regions, each group of unit regions of the colour filter portion being arranged on a corresponding group of the plurality of groups of unit regions of the hologram portion, whereby the plurality of groups of unit regions of the colour filter portion is spatially arranged to form a predetermined colour image. There is also provided a method of forming the holographic optical element. There is further provided an article having optical security incorporated therein.

Abstract: A diversified assembly printed circuit board includes a first printed circuit board provided with a multiple first conductive metals protruding from a surface of the first printed circuit board, and a multiple second printed circuit boards each provided with a multiple second conductive metals protruding from a surface of the each of the second printed circuit boards. At a connection position, solidified conductive metal paste is arranged between each of the first conductive metals and a corresponding second conductive metal to electrically connect each of the first conductive metals and the corresponding second conductive metal. A laminated adhesive sheet is arranged between each of the second printed circuit boards and the first printed circuit board to physically connect the second printed circuit boards and the first printed circuit board.