Abstract: Described herein are systems, methods, and computer-readable medium for magnetic resonance (MR) based thermometry. A method for magnetic resonance based thermometry includes: acquiring, by a variable flip-angle T1 mapping sequence, MR data in an area of interest of a subject that is heated by the application of focused ultrasound (FUS) to the brain of the subject, where the MR data includes T1 values over time, and where the acquisition of the MR data includes applying an accelerated three-dimensional ultra-short spiral acquisition sequence with a nonselective excitation pulse; tracking changes in proton resonance frequency and determining, based at least in part on a mathematical relationship established by T1 mapping thermometry, a temperature change in the area of interest over time, and where the temperature change is caused at least in part by a change in the applied FUS.

Abstract: A waveguide probe structure, a calibration device for an antenna array and a calibration method for an antenna array are provided. The waveguide probe structure includes a waveguide coaxial converter, a tapered waveguide and a first straight waveguide. The waveguide coaxial converter is configured to transmit and receive two orthogonal linearly-polarized signals; the tapered waveguide includes a first waveguide cavity including a first waveguide port and a second waveguide port, the first waveguide port is connected to the waveguide coaxial converter, the second waveguide port is connected to the first straight waveguide, and a size of a cross section of the first waveguide cavity increases monotonically in a direction from the first waveguide port to the second waveguide port; the first straight waveguide includes a second waveguide cavity, a size of a cross section of the second waveguide cavity is equal to a size of the second waveguide port.

Abstract: The present disclosure relates to a lithium-ion secondary battery, a battery apparatus, an electrical apparatus, and preparation methods for a positive electrode active material and a positive electrode plate. The battery includes a positive electrode plate, a negative electrode plate, and an electrolyte. The positive electrode plate comprises a current collector and a film layer disposed on at least one side of the collector. The film layer comprises a positive electrode active material including lithium-containing transition metal phosphate particles, at least part of the surfaces of which are coated with a carbon material. In a cross-section along the electrode plate thickness direction, the DA90 of the particles ranges from 1400 nm to 2100 nm, and the particle size concentration ratio (DA90?DA10)/DA50 ranges from 1.855 to 2.375, wherein DA90, DA50, and DA10 respectively denote the particle sizes corresponding to 90%, 50%, and 10% of the area cumulative distribution.

Abstract: The present application provides an adjustable radio frequency unit, a filter, and an electronic device. The adjustable radio frequency unit includes a first tunable dielectric layer and a second tunable dielectric layer; a first conductive layer located between the first tunable dielectric layer and the second tunable dielectric layer; a second conductive layer located on the side, away from the first conductive layer, of the first tunable dielectric layer; and a third conductive layer located on the side, away from the first conductive layer, of the second tunable dielectric layer; wherein orthographic projections of the first conductive layer, the second conductive layer and the third conductive layer on the first tunable dielectric layer at least partially overlap with one another. The adjustable radio frequency unit has the characteristic of passband adjustability and with high adjustment precision, good controllability, wide working frequency range, and low loss and cost.

Abstract: The present application relates to the technical field of power system fault detection, discloses a high-speed location method for high impedance fault in distribution network based on directional frequency scanning. The high-speed location method includes, intercepting a zero-sequence current signal I0j collected by each of monitoring points of the distribution network and a bus zero-sequence voltage signal U0 of the distribution network, determining the fault occurrence time tf, extracting a first natural mode function to directly reconstruct a original fault signal, projecting a first natural mode function signal to the reference orthogonal vector group respectively, distinguishing the upstream and downstream of a fault point by a clustering algorithm.

Abstract: Method of at least partially inhibiting the function of Klebsiella pneumoniae carbapenemase-2 (KPC-2) or a variant thereof, the method including contacting the KPC-2 with a benzoxaborole selected from the group consisting of 5-chloro-1,3-dihydro-1-hydroxy-2,1-benzoxaborole, 5-fluoro-1,3-dihydro-1-hydroxy-2,1-benzoxaborole, and mixtures thereof useful in the treatment of beta-lactam antibiotic resistant bacteria infections in a subject.

Abstract: Methods of treating a hypervirulent Klebsiella pneumoniae (hvKp) infection in a subject in need thereof, the method involving co-administering a therapeutically effective amount of an antibiotic and a non-steroidal anti-inflammatory drug or a signal transducer and activator of transcription 1 inhibitor to the subject.

Abstract: An ultraviolet differential optical absorption spectroscopy (UV-DOAS) and open path (OP) based long-distance detection device for a chlorine gas, and a method are provided.

Abstract: A model processing method includes: obtaining a sample data set of a sample subject including a sample image, a sample reference image, and a sample portrait; inputting the sample data set into a neural network model for image processing to obtain a predicted portrait, where the image processing includes: performing feature extraction on the sample image and the sample reference image to obtain facial and hairstyle features of the sample subject; generating a reference portrait of the sample subject based on the facial and hairstyle features; determining a sample portrait feature based on the reference portrait and the facial and hairstyle features; and generating the predicted portrait based on the sample portrait feature; and adjusting parameters of the neural network model based on the sample image, the predicted portrait, the sample portrait and the reference portrait.

Abstract: A clean storage system for a home ventilator includes a body with a ventilator placement region, a storage device, an air purification system, and a display control component, where air outlets are at least formed in the ventilator placement region or a portion of the body proximal to the ventilator placement region; the storage device is provided with a storage chamber, exhaust ports, and a storage opening capable of being opened or closed, and the storage chamber communicates with an air supply device; the air purification system is provided with a fan, an air purification device, the air outlets, and air inlets; and an airflow channel in an air outflow direction of the air purification device in the body is a clean air region, and the air outlets communicate with the airflow channel.

Abstract: The present disclosure discloses a home ventilator. The home ventilator includes a body with a respiratory function assembly, a storage device, an air purification system, and a display control component, where the storage device is provided with a storage chamber, exhaust ports, and a storage opening capable of being opened or closed, and the storage chamber communicates with an air supply device; the air purification system is provided with a fan, an air purification device, and air outlets; and external air of the body is introduced from air inlets, an airflow channel in an air outflow direction of the air purification device in the body is a clean air region, and the respiratory function assembly and the air supply device respectively draw in clean air.

Abstract: Provided is use of a compound represented by Formula (I), or a stereoisomer, tautomer, solvate or pharmaceutically acceptable salt of the compound represented by Formula (I) in the manufacture of a medicament for treating and/or preventing an immune system disease.

Abstract: Disclosed are a method and system for verifying a low-frequency oscillation damping control effect of a governor power system stabilizer (GPSS), relating to the technical field of power systems. The method includes: selecting a wiring working condition for a fault-free disconnection test, and constructing a unit test working condition; performing the fault-free disconnection test on an outgoing line of a power plant, and collecting an electromagnetic power fluctuation recording curve; and comparing low-frequency oscillation damping effects under different GPSS settings, evaluating the effects, and performing a cyclic test. A success rate of the test is increased, safety of the test is improved, and the overall stability and anti-oscillation capacity of the system are improved in the disclosure.

Abstract: A display panel and a display device are provided in the embodiment of the present application. The display panel includes: a driving substrate; at least two light-emitting units, stacked on the driving substrate in sequence along the light-emitting direction of the display panel; and a reflecting layer, disposed between two adjacent light-emitting units. The reflecting layer includes a first reflecting unit and a second reflecting unit disposed at an interval. The first reflecting unit is disposed between two adjacent light-emitting units. The second reflecting unit is disposed at the periphery of the first reflecting unit. The first reflecting unit and the second reflecting unit cooperate to make part of the light of the light-emitting unit emit in a direction perpendicular to the driving substrate after secondary reflection.

Abstract: A control method includes determining an actual capacity requirement and a target evaporation temperature of each indoor unit of a multi-split air conditioning system, calculating a total capacity requirement of an outdoor unit of the multi-split air conditioning system according to the actual capacity requirements of the indoor units, and determining an initial frequency of a compressor of the outdoor unit according to the total capacity requirement, and adjusting a frequency of the compressor based on the initial frequency, and according to temperature characteristic values of evaporator coils of all the plurality of indoor units and a reference evaporation temperature if all the indoor units operate in an air blowing mode or according to the temperature characteristic values and a preset evaporation temperature threshold if not all the indoor units operate in the air blowing mode.

Abstract: In a control method, a first degree of superheat of a target indoor unit is determined according to a temperature characteristic value of an evaporator coil and an evaporation outlet temperature value of the target indoor unit, and an air blowing correction coefficient when a preset condition is met or a second degree of superheat of the target indoor unit is determined according to the temperature characteristic value and the evaporation outlet temperature value when the preset condition is not met. An opening degree of a throttling element of the target indoor unit is adjusted according to the first or second degree of superheat. The air blowing correction coefficient is related to an air blowing mode of the target indoor unit. The evaporation outlet temperature value is measured at a point on an outdoor unit side.

Abstract: An airspace flow prediction method based on an ensemble learning algorithm is provided, which includes the steps: collecting historical airspace flow data and related spatial structure data, and preprocessing; constructing a GNN model, and calculating an influence degree of each node and an influence degree between the nodes in an airspace network by using the GNN model, the node being any airport or any waypoint; performing, by the GNN model, feature conversion and attention fusion on the influence degree of the node, the influence degree between the nodes and time series data to acquire a fused feature vector; and inputting the fused feature vector into an LSTM model to acquire a predicted airspace flow of the node.

Abstract: Disclosed are a method and system for verifying a low-frequency oscillation damping control effect of a governor power system stabilizer (GPSS), relating to the technical field of power systems. The method includes: selecting a wiring working condition for a fault-free disconnection test, and constructing a unit test working condition; performing the fault-free disconnection test on an outgoing line of a power plant, and collecting an electromagnetic power fluctuation recording curve; and comparing low-frequency oscillation damping effects under different GPSS settings, evaluating the effects, and performing a cyclic test. A success rate of the test is increased, safety of the test is improved, and the overall stability and anti-oscillation capacity of the system are improved in the disclosure.