Abstract: A cold forging steel and a manufacturing method therefor. The cold forging steel comprises the following chemical elements in percentage by mass: C: 0.170-0.220%, Si: 0.10-0.30%, Mn: 1.00-1.20%, S: 0.010-0.020%, Cr: 1.10-1.30%, Al: 0.015-0.045%, N: 0.0100-0.0180%, and Ti: 0.040-0.100%, with the balance being Fe and inevitable impurities. The cold forging steel has excellent plasticity and cold working properties. Compared with a conventional cold forging steel, when the present cold forging steel is used to produce and manufacture a forged part (in particular a high-precision forged part, such as a gear), energy can be effectively saved, and environmental pollution is reduced.

Abstract: An electric pump is provided, including a connecting plate assembly. The connecting plate assembly includes a conductive member and an injection molded body; the injection molded body is formed by injection molding with at least part of the conductive member as an insert; the injection molded body includes a limiting member and an insertion connector which are of an integrated structure; the conductive member includes a body portion and pin portions which are fixedly connected or in limited connection; and the connecting positions of the body portion and the pin portions are at least partially located in the injection molded body. According to the electric pump, the deformation of the connecting plate assembly can be reduced.

Abstract: An HCC converter valve current measurement strategy, which includes installing a current transformer acquisition device on each arm of the current transformer configuration topology to measure the converter arm current. Each current transformer acquisition device is simultaneously connected to a valve control device and a polarization control device. The valve control device measures the DC bus current and the AC current on the converter transformer valve side for active shutdown judgment, while the polarization control device simultaneously measures the arm current, DC bus current, and AC current on the converter transformer valve side for valve fault judgment. This strategy meets the current measurement requirements of the composite HCC new high-voltage DC converter, serves as a control strategy criterion and equipment protection criterion, and ensures the normal operation of the converter.

Abstract: Device and methods for producing ammonium bicarbonate in an ammonia-based decarbonization system are provided. The device may include a cooling function zone, an ammonium bicarbonate generation zone, a carbon dioxide absorption zone and an ammonia removal function zone. The cooling function zone may remove heat from the decarbonization system. The ammonium bicarbonate generation zone may generate ammonium bicarbonate. The carbon dioxide absorption zone, which may use multi-stage absorption, may absorb carbon dioxide in process gas. The ammonia removal function zone may remove ammonia in decarbonized process gas. Absorbent ammonia for carbon dioxide removal may be mainly fed to the absorption zone. As a result of the zone control of ammonium bicarbonate generation, CO2 absorption and ammonia removal, the efficiency of decarbonization and absorption may be improved, and ammonia escape may be reduced. Meanwhile, carbon dioxide in flue gas can be used for producing ammonium bicarbonate as a nitrogen fertilizer.

Abstract: Apparatus and methods for controlling ammonia escape in an ammonia-based decarbonization system, wherein ammonia may be used as the desulfurization and decarbonization agent, the gas may first enter the desulfurization device for desulfurization to produce ammonium sulfate fertilizer, and the desulfurized gas may enter the decarbonization device to remove carbon dioxide in the gas, and may produce ammonium bicarbonate fertilizer. The decarbonized gas may include free ammonia, and the free ammonia in the gas may be absorbed with the acidic ammonium sulfate solution and acidic water washing liquid of ammonia-based desulfurization.

Abstract: Disclosed herein a workpiece, a workpiece processing method and a workpiece processing system. To achieve hermetic sealing in a workpiece, it is often desirable to remove contaminants from channels and to seal up the channels. The workpiece processing method comprising applying a low surface energy solution on a surface of the workpiece, the low surface energy solution includes a carrier solvent and a filler material dissolved in the carrier solvent; allowing the low surface energy solution to impregnate into a channel in the workpiece; removing the solvent from the low surface energy solution to remain the filler material in the channel to hermetically seal the channel.

Abstract: A control method, a control system, an aircraft, and a storage medium are provided. The control method includes: obtaining a target position point(s) of a slender obstacle, where the slender obstacle is located within a flight area of the aircraft; obtaining target data corresponding to the target position point(s); constructing a three-dimensional virtual volume of a space occupied by the slender obstacle based on the target data; generating a flight route for the aircraft within the flight area based on the three-dimensional virtual volume; and controlling the aircraft to fly along the flight route to circumvent the slender obstacle. This control method can improve both the efficiency and safety of the aircraft in circumventing slender obstacles.

Abstract: A method for controlling currents of a permanent magnet synchronous motor based on constrained model predictive control is provided. The stator current measurement data of the permanent magnet synchronous motor at sampling time are obtained; a current following error signal is generated based on the stator current measurement data and a stator current set value; it is determined whether an area where the current following error signal is located in a current plane state partition is a hexagonal interior area, a first area or a second area; in response to determining that the area where the current following error signal is located in the current plane state partition is the first area, the current following error signal is mapped to a side of the first area to obtain an updated current following error signal; and a current loop control voltage is generated.

Abstract: The present invention relates to a boron-containing drug and a preparation method thereof. The boron-containing drug is obtained by means of polymerizing dopamine and a derivative thereof with a boron-containing compound. The concentration of the boron-containing drug in tumors can reach up to 70 ?g/g. Furthermore, the boron concentration ratio of tumors to blood is significantly increased and can reach 70:1. Moreover, the boron-containing drug can be quickly cleared from blood and normal organs, drug dosage can be significantly decreased, side effects can be reduced, and tumor treatment effects can be significantly enhanced.

Abstract: This present disclosure is directed to a method for using additive manufacturing to create gold and alumina materials that are highly resistant to oxidation and corrosion in extreme environments.

Abstract: The present invention discloses short-term prediction method, system, and device for urban low-altitude wind fields, relating to the field of urban wind field prediction. The scheme includes obtaining historical wind speed component data, combining a wind direction inference module to obtain a target incoming wind direction accordingly, and combining a time series prediction module to obtain predicted wind speed component data of A meteorological stations in a future time period; Selecting a target physical-informed spatial mapping module corresponding to the target incoming wind direction, and obtaining the predicted wind speed component data and the predicted pressure data corresponding to each grid node under the preset pedestrian-level structured grid according to the predicted wind speed component data, the preset pedestrian-level structured grid, the binary mask vector for buildings in the target city, and the target physical-informed spatial mapping module.

Abstract: The disclosure provides a method, an apparatus, a device, a storage medium and a program product for speech recognition. The method includes: extracting an audio feature representation of an audio to be recognized; extracting a visual feature representation of visual data associated with the audio, the visual data including an image or a video; and determining, using a trained machine learning model, a speech recognition result of the audio based on the audio feature representation and the visual feature representation.

Abstract: Disclosed in the present invention is a radio frequency front-end module for optimizing dynamic error vector magnitude, comprising at least one transmitting channel. Each transmitting channel comprises a driving amplifier, a first bias circuit, a first dynamic power supply, a power amplifier, a second bias circuit, a second dynamic power supply, a logic circuit and a TX timer; upon receiving a TX instruction, the logic circuit controls the transmitting channel to enter a TX working mode, and the TX timer starts timing; and on the basis of a plurality of set time periods, at least one of the first dynamic power supply and the second dynamic power supply outputs dynamic power supply voltages that sequentially increase or decrease, and provides the dynamic power supply voltages to the first bias circuit and/or the second bias circuit.

Abstract: Embodiments of this application provide a communication method and a related apparatus. The method is applied to a first communication device. The method includes: determining a bandwidth splitting ratio of each port of a second communication device; sending first indication information, where the first indication information includes the bandwidth splitting ratio of each port; and receiving traffic-split data from the second communication device. Multi-port transmission between the first communication device and the second communication device is thereby implemented, and bandwidth load balancing across ports of the first communication device is further facilitated, improving communication performance.

Abstract: A data encoding and decoding system, method, and apparatus for efficient feature data processing. The method obtains auxiliary encoding information of feature data and determines scale parameter values corresponding to feature elements. After quantizing these values to integers, the method selects a subset of scale parameter quantization values exceeding a preset threshold. Feature elements corresponding to these selected values are extracted from the feature data and undergo entropy encoding based on their corresponding quantization values. For unencoded feature elements, the method determines appropriate replacement elements. The process combines entropy encoded elements with replacement elements to create an efficient encoded data stream, which can later be decoded through a reverse process. This selective encoding approach significantly reduces data size while maintaining essential information for accurate reconstruction.

Abstract: A fluid assembly, a drive assembly, a fluid control apparatus and a manufacturing method therefor are provided. The fluid assembly includes a main housing, a pump assembly and a valve assembly. The main housing is provided with first chambers and a second chamber. The first chambers and the second chamber are arranged at an interval. At least part of one pump assembly is arranged in one first chamber in a sealed manner. Each pump assembly includes a rotor assembly. The valve assembly includes a valve core. At least part of the valve core is arranged in the second chamber in a sealed manner. Thus, the occupied space of the fluid control apparatus can be reduced.

Abstract: A control method of an aerosol generating device and an aerosol generating device. The aerosol generating device includes a heating element. The heating element is configured to heat an aerosol generating product to generate an aerosol. The control method includes turning on the aerosol generating device; determining a turn-off duration of the aerosol generating device, where the turn-off duration is a time interval from a previous turn-off moment to a current turn-on moment of the aerosol generating device; and determining, based on the turn-off duration, a preheating energy of the aerosol generating device, and controlling the heating element to output the preheating energy, to enable the aerosol generating device to reach a predetermined target temperature.

Abstract: The invention provides a method and system for targeted generation of drug molecules. The method includes: constructing a molecular representation base model to perform transformation, updating, pooling, and integration of chemical space information of drug molecular structures, generating a one-dimensional molecular encoding vector that reflects molecular structure and pharmacodynamic property information; constructing a molecular structure generation model and a molecular property prediction model, and performing segmented training based on the one-dimensional molecular encoding vector. The former restores the vector to a drug molecular structural formula through dimension expansion, feature transformation, and decoding, while the latter predicts molecular attributes. Based on the molecular property prediction results, targeted optimization and generation of new drug molecular structures with desired pharmacodynamic properties can be achieved.

Abstract: Provided is a rotary shaft mechanism including a curved base, a screen support plate, a curved slider, and a rotating block; the curved base includes a first centerline extending along X direction and two curved connecting portions symmetrically arranged around the first centerline; in the X direction, the screen support plates are on opposite sides of the curved base, each curved connecting portion is connected to the corresponding screen support plate through the curved slider and the rotating block; along the X direction, each curved connecting portion is divided into first and second curved guide grooves, the rotating block includes a curved connector connected to the first curved guide groove, and a sliding connector slidably connected to the screen support plate; the curved slider is rotatably connected into the second curved guide groove, and the curved slider is rotatably connected to the screen support plate through a pin-shape shaft.