Abstract: Disclosed are a fluidized catalytic cracking reactor, a system and an application thereof. The fluidized catalytic cracking reactor comprises sequentially from bottom to top: a catalytic cracking reaction zone and an outlet zone, wherein the top end of the reaction zone is communicated with the bottom end of the outlet zone, wherein the reaction zone comprises at least one diameter contracting reaction section which has inner diameter continuously reduced from its bottom end to its top end, and has inner diameter at the top end which is greater than or equal to that of the outlet zone, and wherein the ratio of the total height of the at least one diameter contracting reaction section to the total height of the reactor is 0.15:1 to 0.8:1.

Abstract: Embodiments of this application provide a communication method and a related device. The method includes: receiving, by a radio access network device, first information sent by a terminal device, where the first information includes an identifier of a beam used by the terminal device for random access and random access information of the terminal device on the beam; and optimizing, by the radio access network device, a random access channel based on the first information.

Abstract: Embodiments of this application provide an information transmission method, an apparatus, and a system. A first network device sends, to a terminal device, conditional handover configuration information that includes information about candidate cells and a handover trigger condition; after receiving the conditional handover configuration information and performing a conditional handover, the terminal device sends, to a second network device, a first failure cause value corresponding to a candidate target cell and/or a second failure cause value corresponding to a to-be-determined cell during the conditional handover; and the second network device receives the first failure cause value and/or the second failure cause value from the terminal device, and sends the first failure cause value and/or the second failure cause value to the first network device.

Abstract: The present disclosure discloses a common-path high-repetition-frequency lunar laser ranging system and method. In the system, a kHz laser, a beam expanding negative lens, a beam expanding positive lens and a laser docking mirror are sequentially arranged along the optical path direction; the laser beam emitted by the kHz laser enters a telescope through the laser docking mirror after passing through the beam expanding negative lens and the beam expanding positive lens, and then is emitted to a lunar retro-reflector; the beam expanding negative lens and the beam expanding positive lens are arranged in a confocal manner; a beam splitter, a focusing lens, a rotating shutter, an adjustable diaphragm, a collimating lens, an optical filter and a detector are sequentially arranged along the optical path direction; the adjustable diaphragm is installed at the common focus of the focusing lens and the collimating lens.

Abstract: A preparation method of a heat-not-burn cigarette paper with boron nitride as a thermally-conductive filler includes: mixing potassium oleate, polyvinyl alcohol (PVA) and water, thoroughly stirring under an ultrasonic condition, aging, and filtering until there is no precipitate; thoroughly mixing a resulting mixed solution with a softwood pulp and a hardwood pulp to obtain a coarse pulp; and under stirring, adding boron nitride and calcium carbonate as a filler to the coarse pulp, heating to 60° C., and stirring for thorough mixing to obtain a pulp for sizing and papermaking. The present disclosure effectively improves the stability of a cigarette paper by improving a coefficient of thermal conductivity of the paper. Boron nitride, when used as a thermally-conductive filler in a thin-walled or paper product, enables high heat removal capacity. The preparation method retains the original whiteness and transparency of the cigarette paper, and provides high conductivity.

Abstract: A backlight module includes a back plate, a backlight component, and a rigid rear shell. The back plate includes a bottom plate and a vertical plate enclosing a mounting space. The backlight component is located in the mounting space and fixedly connected with the back plate. The rigid rear shell covers a side of the back plate away from the backlight component. The rigid rear shell includes a function part, a preset gap exists between the function part and the bottom plate. The bottom plate has a first connecting part including a first screw hole. The function part has a second connecting part including a second screw hole. The first connecting part and the second connecting part are connected through a fixing screw penetrating into the first screw hole and the second screw hole. A first gap exists between the first connecting part and the second connecting part.

Abstract: This application provides a wireless communication method and apparatus. The method includes: determining reference information, where the reference information includes information about first duration and/or information about a first cell, the first duration includes duration in which a terminal device is in an inactive state, and the first cell includes a cell in which the terminal device performs an RNAU; and sending the reference information.

Abstract: A method of preparing biodegradable Zn—Mg—Bi zinc alloy includes: melting magnesium under an inert atmosphere to obtain a magnesium melt; adding bismuth particles to the magnesium melt followed by reaction under stirring and heat preservation treatment to obtain a Mg—Bi alloy melt; allowing the Mg—Bi alloy melt to stand in a furnace; subjecting the Mg—Bi alloy melt to refining, slagging-off, casting and demoulding to obtain Mg-50 wt. % Bi alloy ingot; melting zinc to obtain a zinc melt; adding the Mg-50 wt. % Bi alloy ingot and pure magnesium or pure bismuth followed by heating to a preset temperature, stirring and heat preservation to obtain a Zn—Mg—Bi alloy melt; allowing the Zn—Mg—Bi alloy melt to stand in a furnace followed by refining, slagging-off, casting and demoulding to obtain the biodegradable Zn—Mg—Bi zinc alloy.

Abstract: A method for generating an image of an object with a magnetic resonance imaging (MM) system is presented. The method includes first performing a calibration scan of the object. The calibration scan is performed with a zero echo time (ZTE) radial sampling scheme to obtain calibration k-spaces for surface coil elements and a body coil of the MRI system. The calibration scan is performed in such a manner that the endpoints of calibration k-space lines in each calibration k-space follow a spiral path. A plurality of calibration parameters are then obtained from the plurality of calibration k-spaces. A second scan of the object is then performed to acquire the MR image data. The image of the object is then generated based on the plurality of calibration parameters and the MR image data.

Abstract: Transgenic silkworms stably expressing hagfish thread keratin genes or composite silkworm/hagfish thread keratin genes are disclosed. The exogenous hagfish thread keratin genes are stably integrated into a defined site of the fibroin heavy chain intron or a fibroin light chain intron of silkworms. Synthetic hagfish thread keratin proteins and composite hagfish thread keratin-silkworm genes and proteins are provided. The expression of exogenous hagfish thread keratin genes is driven by the endogenous fibroin heavy chain promoter, improving the genetic stability of transgenic silkworms. The composite silkworm/hagfish thread keratin fibers exhibit exceptional mechanical performance, compared to normal silkworm silk fibers and other transgenic silkworm fibers.

Abstract: In a method for resolving PCT conflicts in a new radio (NR) network, synchronization signal and PBCH (Physical Broadcast Channel) blocks (SSB) and corresponding physical cell identifiers (PCIs) are utilized. In the method, a first PCI corresponds to a first SSB and a second PCI corresponds to a second SSB. An access network device determines, based on the first PCI and the second PCT, that the first PCI conflicts with the second PCI. In this way, PCI conflicts in an NR system can be detected to improve the success rate and to reduce the call drop rate in a terminal handover.

Abstract: Disclosed in the present disclosure is a method for smelting a high-temperature alloy with an ultrahigh N content in a VIM furnace, and a high-temperature alloy with an ultrahigh N content. The VIM-furnace smelting method comprises a smelting step performed in a VIM furnace, and a casting step, wherein at a later stage of smelting, a nitrogen-containing substance is added to the VIM furnace to adjust the content of N. In the present disclosure, by comprehensively improving the raw materials, the smelting process, etc., the yield of N during a VIM-furnace smelting process is increased and accurate control over the content of N in the high-temperature alloy is achieved, such that a target content of nitrogen can be guaranteed, and an ideal product can thus be obtained.

Abstract: A process for producing light olefins from inferior oils includes the steps of: subjecting an inferior oil to a thermal conversion reaction in the presence of hydrogen to obtain a conversion product; separating the conversion product to obtain a first separated product; separating the first separated product to obtain an upgraded oil and a pitch; subjecting the upgraded oil to hydro-upgrading to obtain a hydro-upgraded oil; separating the hydro-upgraded oil to obtain a hydro-upgraded heavy oil; and subjecting the hydro-upgraded heavy oil to catalytic cracking to obtain a catalytic cracking product comprising a light olefin.

Abstract: A method for producing light aromatics, includes the steps of: i) contacting a feedstock comprising heavy aromatic(s) with a catalyst in a fluidized reactor for aromatics lightening reaction in the presence of hydrogen to obtain a product rich in C6-C8 light aromatic(s) and a spent catalyst, wherein the heavy aromatic is one or more selected from C9+ aromatics; ii) separating the resulted product rich in C6-C8 light aromatic(s) to obtain hydrogen, a non-aromatic component, C6-C8 light aromatic(s) and a C9+ aromatic component; and iii) recycling at least a part of the C9+ aromatic component to the fluidized reactor. The method has strong adaptability to feedstocks and high flexibility in operation and allows a long-period stable operation. The method can produce high-value light aromatics from heavy aromatics that are difficult to be treated and utilized.

Abstract: A tunneling system includes a bolter miner, a bolter-integrated transportation machine, a transfer machine, a self-moving tail and a belt conveyor. The bolter miner includes a rack, a cutting device, and a bolt support device. The bolt support device includes a lifting assembly, a work platform, a first drilling frame assembly and a stabilizing assembly. The lifting assembly is arranged between the rack and the work platform. The first drilling frame assembly and the stabilizing assembly are arranged on the work platform. The bolter-integrated transportation machine is arranged behind the bolter miner and configured to transfer coal rock cut and conveyed by the bolter miner. One end of the transfer machine is connected with the bolter-integrated transportation machine, and the other end of the transfer machine is lapped with the self-moving tail. The belt conveyor is arranged behind the self-moving tail.

Abstract: A ferrite nano-composites with synergistic enhancement of liver specificity and preparation method and application thereof, wherein the ferrite nano-composites have both manganese ions and ethoxybenzyl group, and the molar percentage of ethoxybenzyl group to manganese ions is 25-60%. The molar percentages of manganese and ferric ions in the ferrite nanoparticles are 40-80%, and the ferrite nano-composites with manganese ions and ethoxybenzyl groups on the surface are in the particle size range of 0.2-5 nm, with preferred particle size range of 2-4 nm. With the preparation method and the application for magnetic resonance T1 imaging, the ferrite nano-composites enhance hepatocyte specificity due to the synergistic effect of manganese ions and ethoxybenzyl groups, thus achieving enhanced T1 imaging of the liver with high specificity in magnetic resonance imaging.

Abstract: A tunnel tunneling system includes a bolter miner, a bolter-integrated transportation machine, a transfer machine, a self-moving tail and a belt conveyor. The bolter miner includes a rack, a cutting device, a drilling device and a control device. The cutting device is arranged on the rack and is swingable in an up-down direction, and has a lowest swing angle and a highest swing angle. The drilling device is arranged on the rack, and includes a drilling rig and a sensor. The drilling rig is configured to drill a tunnel floor and/or a tunnel roof, and the sensor is configured to monitor a set parameter of the drilling rig and generate a monitoring data signal when the drilling rig is drilling. The control device is configured to receive and analyze the monitoring data signal.

Abstract: A soil conditioner spreader and an operation method thereof are provided. The soil conditioner spreader includes a spreader body, a ridger, a solid tank, two spiral drills, a rotary tillage wheel and a mulching device, where the spreader body is provided with a hopper in a front part. The hopper stores a conditioner. The solid tank is arranged above the spiral drills. The spreader body is connected to the solid tank through a feeding track. The ridger, the spiral rills, the rotary tillage wheel and the mulching device are successively arranged at the bottom of the spreader body from the rear to the front. The ridger ridges first, and then the spiral drills perform deep plowing, rotary tillage and scarification and apply the conditioner to a ridge. The rotary tillage wheel performs rotary tillage, and a nozzle sprays a nutrient solution or an herbicide/insecticide. Finally, the mulching device mulches.

Abstract: The invention provides designs and methods for a heavy vehicle operations and control system for heavy automated vehicles, which facilitates heavy vehicle operation and control for connected automated vehicle highway (CAVH) systems. The heavy vehicle management system provides heavy vehicles with individually customized information and real-time vehicle control instructions to fulfill the driving tasks such as car following, lane changing, route guidance. The heavy vehicle management system also realizes heavy vehicle related lane design, transportation operations, and management services for both dedicated and non-dedicated lanes. The heavy vehicle management system consists of one or more of the following physical subsystems: (1) Roadside unit (RSU) network, (2) Traffic Control Unit (TCU) and Traffic Control Center (TCC) network, (3) vehicles and onboard units (OBU), (4) traffic operations centers (TOCs), and (5) cloud platform.