Abstract: An experimental system a method for studying jet impact characteristics at a core outlet of a fast reactor are provided. The system includes a jet impact main loop including a water storage tank, plunger pumps, a filter, preheaters, a jet impact chamber, a heat regenerator, a condenser, valves, flow meters and pipelines connecting these facilities; a cooling loop including cooling tower, a cooling pump, a regulating valve and a flow meter; and a makeup water loop including a deionized water machine, a makeup water tank and a plunger pump. Water in the water storage tank flows to the heat regenerator via the plunger pump, is preliminarily heated by the heat regenerator and then is divided into three branches to flow to the jet impact container.

Abstract: The invention relates to a wide spectrum multi-band detection structure with selective absorption enhancement and its preparation method. The structure comprises a plurality of sub-pixel units capable of detecting incident light in different bands. Each sub-pixel unit is composed of a square well-shaped microstructure array and a metal lower electrode (2), a photosensitive layer (3) and an upper electrode (4) on the surface thereof. The size and array spacing of square well-shaped microstructures in different sub-pixel units are determined according to the detection bands of the sub-pixel units where they are located. The upper openings of the square well-shaped microstructures are hollow to form a resonant cavity, and the adjacent square well-shaped microstructures in the same sub-pixel unit form a resonant cavity, thus solving the problem that the detector structure in the prior art cannot simultaneously realize visible light-near infrared multi-band absorption enhancement detection.

Abstract: A non-invasive time domain reflection probe calibration method includes: using different volume ratio of ethanol and deionized water mixed solution to calculate a test target's medium weight coefficient and waveguide length of the non-invasive time domain reflection probes; using different concentrations of NaCl solutions to calibrate a waveguide geometric dimensioning of the non-invasive time domain reflection probes; preparing compacted soil samples with known different moisture contents and densities, and calibrating a correlation parameter of compacted soil samples' dielectric constant and conductivity with moisture content and density. The method not only determines the sensitivity of the test target medium of the non-invasive time domain reflection probes, but also obtains the waveguide length and geometric dimensioning of the probe, and realizes an accurate test of moisture content and density of the soil.

Abstract: Provided are a communication anti-interference detection method and device. The method includes: demodulating an input radio-frequency signal to acquire a demodulated signal; convolving a first signal and a second signal to acquire a detection signal, so as to detect whether there is an interfering signal in the input radio-frequency signal, wherein the first signal is a signal acquired by performing inverse Fourier transform on the demodulated signal, and the second signal is a signal acquired by performing phase inversion on a preset baseband signal; and performing anti-interference processing on an interfered signal, wherein a signal anti-interference method further includes: after deconvolving the interfering detection signal, performing subtraction or inverse superposition on the detection signal and the first signal, and filtering out the interfering signal to acquire a third signal; and modulating the third signal to acquire an output radio-frequency signal.

Abstract: Provided are a power level acquisition circuit and apparatus, used for solving the problem in the prior art, when conducting reinforced insulation testing, of work hour wastage and safety hazards.

Abstract: An assembly sleeve of a single crystal pulling apparatus, and the single crystal pulling apparatus are provided. The assembly sleeve includes inner and outer cylinders and a bottom cylinder. The outer cylinder is provided with openings at both ends and sleeved onto the inner cylinder. The bottom cylinder is arranged at the opening at a lower end of the outer cylinder, and includes an annular plate and a lower cylinder. Each of the inner lower cylinders is of an inverted-cone shape, an upper end of the inner cylinder is connected to an upper end of the outer cylinder, an outer edge of the annular plate is hermetically connected to the lower end of the outer cylinder, an inner edge of the annular plate is connected to an upper end of the lower cylinder, and a lower end of the inner cylinder is fixedly connected to an upper surface of the annular plate.

Abstract: The present disclosures discloses a precooler-based transcritical CO2 heat pump system and a control method of a waterway two-way valve thereof, in which a transcritical CO2 heat pump system is assisted by a precooler system. A circulating waterway is divided into two parts in the system through a three-way diversion valve and a three-way confluence valve and is connected to a waterway bypass valve through a waterway two-way regulating valve. An ambient temperature sensor, an evaporation fin temperature sensor and an evaporation pressure sensor are provided, and a programmable logic controller is used as a core for acquisition, operation and control.

Abstract: Provided are a database processing method and apparatus, and a computer readable storage medium. The database processing method comprises: after a lock wait is generated, writing lock wait related information into a lock wait log.

Abstract: Disclosed is a fusion network-based method for image super-resolution and non-uniform motion deblurring. The method achieves, for the first time, restoration of a low-resolution non-uniform motion-blurred image based on a deep neural network. The network uses two branch modules to respectively extract features for image super-resolution and non-uniform motion deblurring, and achieves, by means of a feature fusion module that is trainable, adaptive fusion of outputs of the two branch modules for extracting features. Finally, an upsampling reconstruction module achieves a non-uniform motion deblurring and super-resolution task. According to the method, a self-generated set of training data is configured to perform offline training on a network, thereby achieving restoration of the low-resolution non-uniform motion-blurred image.

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: An outdoor customer premises equipment (CPE) is disclosed. The out door CPE may include: a main body which includes a printed circuit board (PCB), a heat sink, a heater assembly, a SIM card holder, a radio frequency (RF) cable and a fifth generation (5G) communication module; and an antenna module which is detachably connected to the main body and includes a cable interface connected to the RF cable, where the antenna module is a high-gain antenna module or a low-gain antenna module.

Abstract: A screw compressor slide valve with gas pulsation attenuation function includes valve walls and internal through holes. A screw compressor includes the screw compressor slide valve. A part of exhausted gas of the screw compressor is directly discharged from an exhaust port to an exhaust chamber to form a main exhaust flow channel; another part of the exhausted gas is discharged from the exhaust port into the exhaust chamber after being delayed by the internal through holes, which forms a branched exhaust flow channel. Since the branched exhaust flow channel is longer than the main exhaust flow channel, when the gas pulsation in the branched exhaust flow channel lags behind that in the main exhaust flow channel by 180-degree in phase, two gas pulsations in the two flow channels are offset due to opposite gas pulsation phases, which attenuates the gas pulsation, thereby suppressing induced vibration and noise.

Abstract: A method for enhancing compressive strength of a lead smelting water-quenched slag-based cementitious material by mechanical activation is provided, belonging to the technical field of solid waste resource treatment. The method includes following steps: grinding and activating water-quenched slag from lead smelting, then mixing with calcium-based solid waste, magnesium-based solid waste, magnesium oxide, portland cement and water, and performing a steam curing and a curing at normal temperature on cementitious material slurry obtained to obtain the lead smelting water-quenched slag-based cementitious material.

Abstract: Disclosed are a method and an apparatus for determining a data transmission mode, and a computer storage medium. The method includes: determining, by a terminal, a small data transmission mode corresponding to service data based on a preset policy, where small data refer to data of which data amount is less than or equal to a preset value; acquiring, by the terminal, the small data transmission mode supported by the base station through a system message; and transmitting, by the terminal, the service data through the small data transmission mode; where the small data transmission mode comprises at least one of: the terminal migrates from an inactive state to a full connection state, and transmits the service data in the full connection state; or the terminal transmits the service data in the inactive state.

Abstract: A method for constructing a dynamic-like membrane to control membrane fouling of MBR includes: determining a critical pore size of a base material according to an average size of activated sludge in a membrane tank. The base material is detachably fixed on the outer layer of a conventional MBR module, which is placed into the membrane tank of a wastewater treatment system. Then the aeration rate of a membrane area in the MBR module is reduced. With the assistance of the driving pressure of the MBR module itself and the physical interception of the base material, the inherent activated sludge in the membrane tank is used to form a dynamic-like membrane on the surface of the base material.

Abstract: An in-situ dynamic settlement test bench and method for the foundation soil is provided. The in-situ dynamic settlement test bench includes a vibration table system, a sensor embedded in the foundation soil, and a water injection trench around the foundation soil. A horizontal vibration load is applied to the lower foundation soil at an in-situ testing site by means of a vibration table, and the dynamic response of the foundation soil is measured through the sensors embedded in different positions, to reflect the seismic settlement deformation of the soil body. Dynamic settlement tests on soils include indoor dynamic simple shear, triaxial and torsional shear tests. A method is proposed for measuring the dynamic response and settlement deformation of the foundation soil by using a vibrator's vibration action on an in-situ soil column. Measurements of the acceleration response and seismic settlement deformation are taken for the foundation soil under in-situ condition.

Abstract: The present invention discloses a flat heat pipe, comprising a bottom plate, a top plate, and a support plate located between the bottom plate and the top plate; a micron-level radial strip is processed on the inner surface of the bottom plate; the inner surface of the top plate is processed with superhydrophilic and superhydrophobic radial structures arranged at intervals to transport the condensate to the direction of the surrounding pipe wall; a wick is arranged on the inner side of the support plate. The present invention has the function of pumpless directional transport of liquid and convergence of refluxed condensate; thereby improving the heat exchange performance of the entire flat heat pipe.

Abstract: The embodiments of the present disclosure provide a control method, system, device, and medium of a unified playback control system. The control method of the unified playback control system includes: receiving a template request sent by a device, then, after receiving the template request, returning a preset template to the requesting device, and managing and controlling playback of the device by means of the template. In some implementations, the device obtains a unified template of the unified playback control system, and management and control is performed by means of the preset template so as to enable a licensee EPG platform on the device to present a consistent interface style and unified management and control process.

Abstract: The NVDIMM (200) comprises a DRAM (201), a NAND flash memory (202) and a NVDIMM controller (100), the NVDIMM controller (100) controlling the NVDIMM (200) and comprising a DDR controller (101), a NAND flash memory controller (102), a data backup module (103) and a data recovery module (104), and the DDR controller (101) using and enabling DBI. The backup method comprises: reading, by the DDR controller (101), N-bit DQ and 1-bit DBI from the DRAM (201) and sending the same to the data backup module; encoding, by the data backup module (103), the N-bit DQ and the 1-bit DBI into N-bit EDQ according to the values of the N-bit DQ and the 1-bit DBI, and sending the N-bit EDQ to the NAND flash memory controller; and receiving, by the NAND flash memory controller (102), the N-bit EDQ and writing the N-bit EDQ into the NAND flash memory (202).