Abstract: Described herein is a method for preparing acesulfame potassium, comprising: pressing an acetoacetamide-N-sulfonic acid triethylamine salt solution and a cyclizing agent solution into a Venturireactor via different inlets, mixing same at a mixing section and a diffusion section of the Venturireactor, and then injecting the obtained mixture into a flow reactor, wherein the cyclizing agent solution is formed by dissolving sulfur trioxide in a first organic solvent; subjecting the mixture passing through the flow reactor to a sulfonation cyclization reaction under the action of a supported solid base heterogeneous catalyst preset in the flow reactor, and entering the obtained sulfonated cyclized product into a hydrolysis reactor; subjecting the sulfonated cyclized product and a hydrolysis agent preset in the hydrolysis reactor to a hydrolysis reaction to obtain a hydrolysis product solution; and adding potassium hydroxide into an organic phase of the hydrolysate solution for a salt-forming reaction to obtain the

Abstract: In an embodiment, a magnetic assembly includes: an inner permeance annulus; and an outer permeance annulus connected to the inner permeance annulus via magnets, wherein the outer permeance annulus comprises a peak region with a thickness greater than other regions of the outer permeance annulus.

Abstract: Isolated power supply control circuits, isolated power supply and control method thereof are disclosed, the control circuit for controlling an isolated power supply includes a secondary-side control signal generator and a primary-side control signal generator. The secondary-side control signal generator produces a secondary-side transistor switch control signal containing information about a turn-off instant of a secondary-side synchronous rectification transistor, which serves as a second turn-on instant. The primary-side control signal generator derives, from a feedback signal, a supposed turn-on instant for a primary-side transistor switch, which serves as a first turn-on instant. The primary side turn-on signal generator further derives a turn-on instant for the primary-side transistor switch from the second or first turn-on instant whichever is later and responsively generates a primary-side transistor switch control signal.

Abstract: An automatic seismic facies identification method based on combination of Self-Attention mechanism and U-shape network architecture, including: obtaining and preprocessing post-stack seismic data to construct a sample training and validation dataset; building an encoder through an overlapped patch merging module with down-sampling function and a self-attention transformer module with global modeling function; building a decoder through a patch expanding module with linear upsampling function, the self-attention transformer module, and a skip connection module with multilayer feature fusion function; building a seismic facies identification model using the encoder, the decoder, and a Hypercolumn module, where the seismic facies identification model includes a Hypercolumns-U-Segformer (HUSeg); and building a hybrid loss function; iteratively training the seismic facies identification model with a training and validation set; and inputting test data into a trained identification model to obtain seismic facies co

Abstract: A sound generator provided in the present disclosure includes a frame, a magnetic circuit unit, and a first vibration unit and a second vibration unit arranged on two sides of the magnetic circuit unit. The magnetic circuit unit includes a first central magnetic yoke in the middle, a central magnet fixed to the first central magnetic yoke, a magnetic component arranged around the central magnet and fixed to the frame, and a connecting portion connecting the first central magnetic yoke to the magnetic component. The central magnet includes a first magnet portion fixed to the first central magnetic yoke and a second magnet portion fixed to the side of the first magnet portion away from the first central magnetic yoke, a projection area of the first magnet portion along a vibrating direction is greater than a projection area of the second magnet portion along the vibrating direction.

Abstract: The present disclosure discloses a sound device includes a frame, a magnet system, and a first vibration system and a second vibration system arranged on two sides of a magnet system. The magnet system includes a first central yoke, a central magnet mounted on the first central yoke, a side yoke surrounding the central magnet and fixed to the frame, and a connection portion connecting the first central yoke and the side yoke. The side yoke includes a first side yoke fixed to the frame and a second side yoke bending and extending from an edge of the first side yoke towards the central magnet; the connection portion connects the first central yoke and the second side yoke. The sound device in the present disclosure has higher magnetic ability and miniaturization ability.

Abstract: Provided are a lane line recognition method, an electronic device and a storage medium, relating to a technical field of artificial intelligence, in particular to technical fields of intelligent transportation, automatic driving and deep learning. The lane line recognition method includes: extracting a basic feature of an original image; recognizing at least one lane line node in the original image by using the basic feature of the original image; extracting a local feature from the basic feature of the original image by using the at least one lane line node; fusing the basic feature and the local feature; and recognizing a lane line in the original image based on a fused result.

Abstract: This disclosure discloses a radiative cooling optical filter, comprising a substrate. One side of the substrate is polished, and the rough side of the substrate is provided with a metal reflective layer. The polished side of the substrate is subsequently provided with the intermediate layers and a top layer. The intermediate layer comprises alternatingly arranged layers A and layers B. The thickness of each layer A and layer B is 50-400 nm. The material of the layer A is silicon dioxide or aluminum oxide, and the material of the layer B is titanium dioxide, silicon nitride or silicon carbide. The material of the top layer is ytterbium fluoride, yttrium fluoride or zinc sulfide. The intermediate layer and the top layer jointly constitute a multi-resonant absorption enhancer in the atmospheric transparent window.

Abstract: An audio processing method applied to a first terminal is described, and includes: in response to receiving of audio data input by a user at the first terminal, and determination that a voice change function is turned on, determining change parameters; and based on the change parameters, performing change processing on the audio data.

Abstract: A wireless communication method for use in a first wireless device is disclosed. The method comprises transmitting, to a second wireless device, configuration information associated with reserved resources within a plurality of resources.

Abstract: A voltage mode transmitter circuit includes a low-dropout (LDO) regulator and an output circuit. The LDO regulator generates a driving voltage. The output circuit generates an output signal, and includes: a termination resistor, transmitting the output signal; a data processing circuit, driven by the driving voltage and adjusting a level of a node according to first and second data signals; a pre-emphasis circuit, transmitting a supply voltage to the node according to a control signal to adjust a transition edge of the output signal; a voltage protection circuit, providing an overvoltage protection according to a bias voltage, and coupling the node to the termination resistor. The data processing circuit, the pre-emphasis circuit, and the voltage protection circuit include at least one transistor, and a highest level of the output signal is higher than a withstand voltage of the at least one transistor.

Abstract: The present disclosure relates to a method of synthesizing cyclosporine derivatives. The method includes: providing a precursor fluid of the cyclosporine derivative, an alkaline fluid and a ClCH2OCOCl solution; premixing the precursor fluid and the alkaline fluid to obtain a premixed solution; feeding the premixed solution into a first reaction chamber, reacting to prepare a first reaction liquid; feeding the first reaction liquid into a second reaction chamber, reacting the first reaction liquid with a CO2 fluid to prepare a second reaction liquid; and reacting the second reaction liquid with the ClCH2OCOCl solution.

Abstract: A multi-sector data correction method for gamma imaging while drilling includes the steps of: (a) dividing each gamma imaging sector into a plurality of counting zones; (b) counting a number of valid counting pulses for each counting zone at a predetermined time interval during MWD; (c) constructing a plurality of measurement vectors based on a value of recording times of each counting zone; (d) establishing a correction matrix with a conditional number less than a set value through an optimization algorithm; and (e) calculating a gamma intensity of each measured sector with the plurality of measurement vectors and the correction matrix as constructed, so as to complete the correction on the measurement data of each measured sector for each predetermined time interval. This method eliminate problems such as rotational measurement distortion of the gamma imaging while drilling tool and improve the accuracy of calculating the formation dip angle.

Abstract: A method for preparing a Bainite hot-working die, includes: 1) weighing and mixing alloy raw materials including: C: 0.50-0.60%, Si: 0.20-0.25%, Mn: 1.00-1.50%, W: 2.10-3.00%, Mo: 3.50-5.00%, V: 0.50-1.00%, Co: 0.60-1.10%, P?0.02%, rare earth (RE): 0.01-0.10%, (RE)/(S)>3.0, (RE)×(S)<0.004%, the balance being Fe and impurities; smelting, casting, annealing the alloy raw materials, to yield steel billets; 2) forging the steel billets to obtain Bainite die billets; 3) mechanically roughening the Bainite die billets, to yield die inserts; 4) tempering the die inserts, to yield hardened Bainite die inserts through secondary strengthening of Bainite; 5) mechanically machining the hardened Bainite die inserts to yield precisely sized die inserts; 6) nitriding the precisely sized die inserts; and 7) assembling the die inserts to yield a Bainite hot-working die.

Abstract: A transmitter includes a level shifter circuit, an edge adjustment circuit and a driver. The level shifter circuit generates first signals and second signals based on an input signal, wherein a voltage range of the input signal, a voltage range of the first signals, and a voltage range of the second signals are different from each other. The edge adjustment circuit adjusts a level of a first node and a level of a second node according to the first signals and the second signals, and provides an overvoltage protection during the adjustment of the level of the first node and the level of the second node. The driver generates an output signal according to the level of the first node and the level of the second node.

Abstract: Method, device and computer program product for wireless communication are provided. A method includes: transmitting, by a first wireless communication node to a second wireless communication node, a demodulation reference signal (DM-RS) in first physical resource blocks (PRBs) of a plurality of PRBs according to an indictor provided by the first wireless communication node or the second wireless communication node.

Abstract: A wireless communication method for use in a wireless terminal is disclosed. The method comprises receiving, from a wireless network node, a measurement configuration including a beam indication; and receiving at least one reference signal based on the beam indication of the measurement configuration.

Abstract: A signal processing method and apparatus, an information configuration method and apparatus, a device, and a storage medium are provided. The signal processing method includes: receiving reference signal configuration information, the reference signal configuration information including a reference signal generation mode; and processing a signal on the basis of the reference signal configuration information.