Abstract: A method and system for matching image features is applied to mine machine vision. The method includes de-noising an image, performing super-pixel segmentation to obtain a plurality of image blocks, calculating the information entropy of each image block to obtain an image block with information entropy greater than a first preset threshold, extracting feature points of the image block, to obtain the feature point set of the image, using a wavelet method to describe the feature points in the feature point set to obtain a feature point descriptor set, and matching feature points in the feature point set with the feature points of a target image.

Abstract: A power delivery system includes a controller, configured to receive a voltage indication signal indicating a measured voltage of a battery management system and to determine whether first and second diodes of the battery management system are faulty based on the voltage indication signal. The controller is also configured to respectively receive first and second current indication signals from first and second current sensors of the battery management system and to determine whether the first and second diodes of the first battery management system are faulty based on the first and second current indication signals.

Abstract: To reduce crosstalk between bond wires, one illustrative integrated circuit includes an array of photoemitters arranged along a centerline, with adjacent photoemitters having contact pads on opposite sides of the centerline. An illustrative assembly includes an integrated circuit chip having an array of photoemitter contact pads; a printed circuit board having a recess in which the integrated circuit chip is mounted; and bond wires connecting the contact pads with respective contact pads on the printed circuit board. An illustrative cable connector includes a module that optically couples optical fibers to an array of photoemitters on an integrated circuit chip mounted to a printed circuit board. Each photoemitter has contact pads connected to the printed circuit board contact pads by bond wires, the bond wires for each photoemitter being routed in an opposite direction relative to the bond wires for any adjacent photoemitters in the array.

Abstract: Provided herein are GLP-1 receptor modulator compounds, pharmaceutical compositions, methods of their preparation, and methods of their use in treatment, and/or diagnosis.

Abstract: A thermoplastic composition comprising: a homopolycarbonate; a poly(carbonate siloxane) component present in an amount effective to provide 0.5-20 wt % total siloxane content; an antimicrobial agent comprising silver zirconium phosphate, silver phosphate glass, or a combination thereof; optionally, an additive composition; each based on the total weight of the composition which totals to 100 wt %.

Abstract: A thermoplastic composition comprising: a homopolycarbonate; a poly(carbonate siloxane) present in an amount effective to provide 0.5-10 wt % total siloxane content; an antimicrobial agent comprising silver silicate powder, silver silicate glass powder, or a combination thereof; each based on the total weight of the composition which totals to 100 wt %.

Abstract: A flip-to-side mount of the present disclosure includes a main shaft arranged in a left-right direction; a first frame body sleeved on the main shaft which is adapted to move left and right relative to the first frame body and to rotate synchronously with the first frame body; a second frame body rotatably arranged on an end of the main shaft, an end of the second frame body being provided with a plurality of clamping grooves along a circumferential direction; a first pin arranged on the main shaft and accommodated in corresponding ones of the clamping grooves, rotation of the second frame body driving the first pin to move towards right and out of the corresponding ones; and an elastic member adapted to drive the main shaft to move towards the first frame body. The present disclosure also provides a magnifier optic.

Abstract: The present disclosure discloses a method and apparatus for detecting a short-circuit capacity at a grid connection point of a wind turbine. The method includes: modulating, when a converter is in a grid-side no-load modulation state and a power grid is in a short-circuited state with respect to the converter, a reactive power reference value and a braking power reference value of the converter; collecting a modulated three-phase voltage signal and a modulated three-phase current signal at the grid connection point of the wind turbine; and obtaining, according to the modulated three-phase voltage signal and the modulated three-phase current signal at the grid connection point of the wind turbine as well as a rated line voltage at the grid connection point of the wind turbine, the short-circuit capacity at the grid connection point of the wind turbine.

Abstract: A power delivery system includes a controller, configured to receive a voltage indication signal indicating a measured voltage of a battery management system and to determine whether first and second diodes of the battery management system are faulty based on the voltage indication signal. The controller is also configured to respectively receive first and second current indication signals from first and second current sensors of the battery management system and to determine whether the first and second diodes of the first battery management system are faulty based on the first and second current indication signals.

Abstract: A method and system for matching image features is applied to mine machine vision. The method includes de-noising an image, performing super-pixel segmentation to obtain a plurality of image blocks, calculating the information entropy of each image block to obtain an image block with information entropy greater than a first preset threshold, extracting feature points of the image block, to obtain the feature point set of the image, using a wavelet method to describe the feature points in the feature point set to obtain a feature point descriptor set, and matching feature points in the feature point set with the feature points of a target image.

Abstract: Provided are anti-CD39 antibodies or antigen-binding fragments thereof, isolated polynucleotides encoding the same, pharmaceutical compositions comprising the same and the uses thereof.

Abstract: The present application provides a method for audio processing, an apparatus, an electronic device and a storage medium, the method includes: performing a segmentation processing on an audio to be processed to obtain N audio segments, N is an integer larger than or equal to 2; obtaining a target sequence according to maximum volume values of each of the audio segments, the target sequence includes: maximum volume values of M audio segments sorted in order of maximum volume values from large to small, M is a positive integer smaller than N; obtaining a volume adjustment parameter of the audio to be processed according to the target sequence, the volume adjustment parameter is used to adjust playing volume of the audio to be processed to target volume. The method avoids the problem that the user frequently adjusts the volume of the audio.

Abstract: The present disclosure discloses a method and apparatus for detecting a short-circuit capacity at a grid connection point of a wind turbine. The method includes: modulating, when a converter is in a grid-side no-load modulation state and a power grid is in a short-circuited state with respect to the converter, a reactive power reference value and a braking power reference value of the converter; collecting a modulated three-phase voltage signal and a modulated three-phase current signal at the grid connection point of the wind turbine; and obtaining, according to the modulated three-phase voltage signal and the modulated three-phase current signal at the grid connection point of the wind turbine as well as a rated line voltage at the grid connection point of the wind turbine, the short-circuit capacity at the grid connection point of the wind turbine.

Abstract: The present application provides a method for audio processing, an apparatus, an electronic device and a storage medium, the method includes: performing a segmentation processing on an audio to be processed to obtain N audio segments, N is an integer larger than or equal to 2; obtaining a target sequence according to maximum volume values of each of the audio segments, the target sequence includes: maximum volume values of M audio segments sorted in order of maximum volume values from large to small, M is a positive integer smaller than N; obtaining a volume adjustment parameter of the audio to be processed according to the target sequence, the volume adjustment parameter is used to adjust playing volume of the audio to be processed to target volume. The method avoids the problem that the user frequently adjusts the volume of the audio.

Abstract: A three-dimensional analog simulation test system for gas-liquid countercurrent in an abandoned mine goaf includes a three-dimensional analog simulation device configured to simulate an analog environment of gas-liquid countercurrent in an abandoned mine goaf, a gas supply system, an automatic water pressure control system and a hydraulic loading system. The three-dimensional analog simulation device includes a reaction frame and a three-dimensional analog simulation chamber. The reaction frame includes a beam, a base and a column for connecting the beam and the base. The three-dimensional analog simulation chamber is arranged inside the reaction frame. The test system can be used to simulate the gas-liquid countercurrent in an abandoned mine goaf so as to study the evolution of water accumulation and gas enrichment in long-term abandonment of closed mines and the migration evolution rules of gas-liquid two-phase in abandoned mines with high gas density.

Abstract: The embodiments of the present disclosure provide a synchronous control method and a synchronous control system. The synchronous control method includes: acquiring respectively response durations during which multiple controlled components execute their corresponding control instructions; determining respectively instruction execution delay durations corresponding to the multiple controlled components according to the response durations during which the multiple controlled components execute their corresponding control instructions, and controlling the multiple controlled components to execute their corresponding control instructions according to the instruction execution delay durations corresponding to the multiple controlled components, such that the multiple controlled components are able to complete their corresponding operations synchronously.

Abstract: A kit for determining ctDNA concentration and a method for determining ctDNA concentration is disclosed, wherein the method comprising dissolving extracted ctDNA in Tris-HCl buffer with pH>7.0 and adding into the buffer 2,7-bis(1-methyl-4-vinylpyridine)-9-ethylcarbazole iodised salt as a molecular probe, calculating the concentration of ctDNA in the solution by measuring the Fluorescence intensity of the solution. It has extremely high sensitivity in the determination of 0 ?g/ml˜50 ?g/ml ctDNA solution.

Abstract: The application discloses a preparation method of monocrystal uranium dioxide nuclear fuel pellets, comprising: granulating and pelleting UO2 powder to obtain UO2 pellets; then coating surfaces of the UO2 pellets with monocrystal growth additive micro powder to form core-shell structure particles; and activated-sintering the core-shell structure particles at high temperature, liquefying the monocrystal growth additive on the surface of the core-shell structure particle at high temperature and then diffusing into UO2 pellets, dissolving the UO3 in the liquid monocrystal growth additive, and recrystallizing the UO2 to form the monocrystal UO2 nuclear fuel pellets.

Abstract: A three-dimensional analog simulation test system for gas-liquid countercurrent in an abandoned mine goaf includes a three-dimensional analog simulation device configured to simulate an analog environment of gas-liquid countercurrent in an abandoned mine goaf, a gas supply system, an automatic water pressure control system and a hydraulic loading system. The three-dimensional analog simulation device includes a reaction frame and a three-dimensional analog simulation chamber. The reaction frame includes a beam, a base and a column for connecting the beam and the base. The three-dimensional analog simulation chamber is arranged inside the reaction frame. The test system can be used to simulate the gas-liquid countercurrent in an abandoned mine goaf so as to study the evolution of water accumulation and gas enrichment in long-term abandonment of closed mines and the migration evolution rules of gas-liquid two-phase in abandoned mines with high gas density.

Abstract: The embodiments of the present disclosure provide a synchronous control method and a synchronous control system. The synchronous control method includes: acquiring respectively response durations during which multiple controlled components execute their corresponding control instructions; determining respectively instruction execution delay durations corresponding to the multiple controlled components according to the response durations during which the multiple controlled components execute their corresponding control instructions, and controlling the multiple controlled components to execute their corresponding control instructions according to the instruction execution delay durations corresponding to the multiple controlled components, such that the multiple controlled components are able to complete their corresponding operations synchronously.