Abstract: This application provides a communication method and a communications apparatus, where the communication method includes: receiving, by a terminal device, downlink control information, where the downlink control information is used to indicate the terminal device to receive or send a first channel on a first resource; receiving, by the terminal device, first indication information, where the first indication information is used to indicate a second resource; when the first resource and the second resource overlap in time domain, receiving or sending, by the terminal device, the first channel on a third resource, where the third resource and the second resource do not overlap in time domain.

Abstract: The present disclosure discloses a fan blade structure, a fan and a fan lamp, belonging to the field of household appliances. A fan blade structure includes: an inner edge located at a windward side, where the inner edge at least partially protrudes towards a leeward side, and the inner edge extends obliquely upwards, gradually, from one end of the fan blade structure close to a rotational axis to one end of the fan blade structure facing away from the rotational axis; an outer edge located at the leeward side, where the outer edge protrudes towards the leeward side, and the outer edge extends obliquely upwards from the end of the fan blade structure close to the rotational axis to the end of the fan blade structure facing away from the rotational axis; and a cambered surface connected between the inner edge and the outer edge.

Abstract: This application provides an image processing method and an electronic device. The image processing method includes: acquiring a plurality of frames of original images; adding a reference coordinate image layer to a second field-of-view image; obtaining an image layer set according to a first field-of-view image, the second field-of-view image, and the reference coordinate image layer; processing, by using a deep learning network model, the image layer set to obtain a first enhanced image; and obtaining a second enhanced image according to the first enhanced image. In the method, since the added reference coordinate image layer reflects a mapping relationship between a field of view corresponding to the first field-of-view image and a field of view corresponding to the second field-of-view image, through the addition of the reference coordinate image layer, priori information can be added, so that different adjustments can be made subsequently according to different field-of-view relationships.

Abstract: A combustion-gas supply system and a combustion-gas supply method thereof, a device equipped with a turbine engine, and a fracturing system are provided. The combustion-gas supply system includes a main pipeline and a multi-functional pipeline; the main pipeline includes a first sub-pipeline and a second sub-pipeline; the first sub-pipeline includes a first gas intake pipe, a first gas supply valve and a first gas outlet pipe arranged in sequence; the second sub-pipeline includes a combustion-gas supply valve and a gas supply pipe, the first gas outlet pipe is connected with the combustion-gas supply valve, the gas supply pipe is configured to be connected with a turbine engine, the multi-functional pipeline includes a second gas intake pipe, a second gas supply valve and a second gas outlet pipe arranged in sequence, and the second gas outlet pipe is communicated with the first gas outlet pipe.

Abstract: The present disclosure discloses a method and a system for controlling a switching power supply, the switching power supply comprising a power factor correction circuit which comprises at least one electrolytic capacitor, the method comprising: detecting a ripple voltage of the electrolytic capacitor; controlling an actual output power of the switching power supply to be equal to a reference output power based on the ripple voltage of the electrolytic capacitor, wherein the reference output power equals to a compensated output power or an upper limit output power, and wherein the compensated output power is obtained by comparing the ripple voltage of the electrolytic capacitor with a reference voltage and subjecting to a compensation calculation. The reference output power is a smaller one of the compensated output power and the upper limit output power.

Abstract: The three-stage axial flow degassing device adopts an efficient degassing technology including a vertical high speed swirling field, a horizontal rapid axial flow field and a vertical reversing scrubbing field formed by a combination of vertical tubes; the first-stage degasser performs the first-stage segmental vertical high speed swirling degassing operation, removes the gas phase carried by the gas-containing fluid, and forms a primary gas and a primary fluid; the microporous uniform mixer breaks bubbles of the primary fluid and forms a gas-liquid uniform mixed flow; the second-stage degasser performs the second-stage horizontal vane wheel swirling generating rapid axial flow degassing operation, removes the gas phase carried by the gas-liquid uniform mixed flow, and forms a secondary gas and a secondary fluid; the third-stage degasser performs the third-stage vertical reversing deep degassing operation, removes liquid phase carried by the secondary gas, and forms a tertiary gas and a tertiary fluid.

Abstract: A three-stage tubular T-shaped degassing device with microbubble axial flow and spiral flow fields is provided, which is applied to quick degassing of a gas-liquid two-phase flow. The three-stage tubular T-shaped degassing device adopts a quick degassing technology combining a microbubble uniform mixed rotational axial flow field and a spiral runner conical spiral flow field with layered jet collision reversing depth degassing. A microbubble uniform mixer is configured to adjust gas-liquid two-phase flow containing big bubbles into microbubble uniform mixed axial flow. A microbubble cyclone is configured to adjust the microbubble uniform mixed axial flow into multiple strands of rotational axial flows containing microbubbles. A rotational axial flow degasser implements the horizontal type microbubble uniform mixed multiple strands rotational axial flow degassing operation to remove most microbubbles to form axial flow gas and axial flow liquid.

Abstract: A continuous high-power turbine fracturing equipment may include a lubrication system, which may include a first lubrication unit configured to lubricate a plunger pump. The first lubrication unit may further include a high pressure lubrication unit. The high pressure lubrication unit may include a high pressure motor, a high pressure pump, and a high pressure oil line. The high pressure motor may be configured to drive the high pressure pump, which may be configured to pump high pressure lubricating oil into the high pressure oil line. The high pressure oil line may be configured to lubricate at least one of connecting rod bearing bushes or crosshead bearing bushes in the plunger pump.

Abstract: A system for supplying combustion gas to a turbine engine for fracturing operation by fracturing manifold equipment is disclosed. The system may include a gas supply device, a gas delivery manifold, a filtering device, a gas detecting system and a connecting device. The gas delivery manifold, and the filtering device, and the gas detecting system are integrated on the fracturing manifold equipment. The gas supply device is connected to the gas delivery manifold through the filtering device. The gas delivery manifold supplies gas to the turbine engine through the connecting device. The disclosed system help reduce operational risk, save floor space, reduce wiring/routing of on-site delivery manifold, enhance connection efficiency, and reduce the complexity of wellsite installation.

Abstract: A high-power turbine fracturing system may include a lubrication system, which may include a first lubrication unit configured to lubricate a plunger pump. The first lubrication unit may further include a high-pressure lubrication unit. The high-pressure lubrication unit may include a high-pressure motor, a high-pressure pump, and a high-pressure oil line. The high-pressure motor may be configured to drive the high-pressure pump, which may be configured to pump high-pressure lubricating oil into the high-pressure oil line. The high-pressure oil line may be configured to lubricate at least one of connecting rod bearing bushes or crosshead bearing bushes in the plunger pump.

Abstract: A method and device for controlling viscosity of asphalt rubber based on a current variation are provided. The method includes processing asphalt rubber raw materials with a first preset proportion, and shearing the processed asphalt rubber; obtaining a shearing current, pumping and discharging the sheared asphalt rubber; obtaining a discharging current, and obtaining the viscosity of the pumped asphalt rubber according to the discharging current and the viscosity-discharging current correlation relationship. The method includes comparing the viscosity with a preset viscosity; outputting the pumped asphalt rubber as finished asphalt rubber when the viscosity is equal to the preset viscosity. The method includes adjusting the viscosity according to the discharging current. Double-current control is adopted, so that the whole-process control of the processing viscosity of the asphalt rubber is realized, and the control accuracy of the viscosity is improved.

Abstract: A startup control method for a DC/DC converter is used for starting the DC/DC converter with energy transferred from a low-voltage side to a high-voltage side, and includes: acquiring a voltage spike measurement value of a power switch at the low-voltage side; determining a duty cycle or a frequency of a driving signal according to the voltage spike measurement value and a preset voltage; and outputting the driving signal to a power switch at the high-voltage side, thereby charging a clamping capacitor of the power switch at the low-voltage side. The startup control method for a DC/DC converter of the disclosure can improve a reverse charging power of the converter to the maximum extent and reduce the time needed for charging a bus capacitor during a reverse startup process while ensuring voltage stress on the power switch not to exceed a limit.

Abstract: A voltage spike measurement circuit for a power switch includes a rectifier unit, a capacitive divider unit and a discharge unit, the rectifier unit configured to receive a voltage signal at both ends of a power switch and output a rectified signal; the capacitive divider unit includes at least two capacitors connected in series and configured to receive the rectified signal, divide the rectified signal based on a capacitance ratio of the at least two capacitors, and output a divider signal to a digital signal processor to calculate a voltage spike measurement value of the power switch; and the discharge unit connected in parallel to the capacitive divider unit.

Abstract: The application provides a current detecting circuit, including a current transformer having a primary winding for receiving a current to be detected and a secondary winding for generating a sampling current; a demagnetizing circuit for demagnetizing the current transformer; a chip selection circuit electrically connected to the demagnetizing circuit, and operably switched between a first mode and a second mode; a sampling circuit electrically connected to the chip selection circuit to sample the sampling current, and outputting a sampling signal to a controller; and a clamping circuit electrically connected between the sampling circuit and the controller, and configured for providing a reference potential. The application further provides a converter including the current detecting circuit.

Abstract: A startup control method for a DC/DC converter is used for starting the DC/DC converter with energy transferred from a low-voltage side to a high-voltage side, and includes: determining a duty cycle or a frequency of a driving signal based on at least a voltage spike reference value and a voltage spike measurement value of a power switch at the low-voltage side; and outputting the driving signal to the power switch, thereby controlling the on and off of the power switch. The startup control method for a DC/DC converter of the disclosure can improve a reverse charging power of the converter to the maximum extent and reduce the time needed for charging a bus capacitor during a reverse startup process while ensuring voltage stress on the power switch not to exceed a limit.

Abstract: The present disclosure provides a light-weight flexible high-thermal-conductivity nano-carbon composite film and a method for preparing same. The nano-carbon composite film includes a plurality of composite units laminated sequentially. The composite unit includes flexible adhesive layers and a graphene film layer, and the flexible adhesive layers are disposed on both sides of the graphene film layer. The preparation method includes sequentially laminating the composite units and hot pressing to obtain the nano-carbon composite film. The nano-carbon composite film has the characteristics of high thermal conductivity, light weight and flexibility, and has an in-plane thermal conductivity of up to 500 W/m·K or higher, a density of 2.0 g/cm3 or less, and still a thermal conductivity of 500 W/m·K or higher after the nano-carbon composite film is repeatedly bent by 180° for 50 times while there is no peeling of graphene from the surface.

Abstract: The present invention relates to a circuit structure for realizing real-time pre-distortion calibration of broadband IQ modulation, comprises a baseband generation module, for the calibration signal generator to generate two orthogonal sine cosine calibration signals respectively according to the calibration bandwidth and the order of the pre-distortion filter, and the data switch is switched to the relevant data channel; a digital-to-analog conversion module, for converting the signals into analog I and Q baseband signals; a frequency synthesis module, for generating signals in a certain frequency range; a IQ modulation module, for mixing the analog baseband signal with the local oscillator signal; an amplitude control module, for continuous adjustment of the RF signal power. The present invention also relates to a method for realizing real-time pre-distortion calibration processing of broadband IQ modulation.

Abstract: Disclosed are a pressure control method and a pressure control device for a braking cylinder of a rail vehicle, and the rail vehicle. The method includes the following steps: acquiring the air charge-release volume of the braking cylinder of the rail vehicle and the air flowrate of the braking cylinder; determining the charge-release duration according to the air charge-release volume of the braking cylinder and the air flowrate of the braking cylinder, and controlling the charge-release working duration of the air charge-release solenoid valve according to the air charge-release duration; when the working duration of the air charge-release solenoid valve reaches the charge-release duration, acquiring the predictive pressure of the braking cylinder, and controlling the working state of the air charge-release solenoid valve according to the predictive pressure.

Abstract: The present invention relates to a targeted protease degradation (TED) platform, and specifically to a conjugate of target molecule-linker-E3 ligase ligand as shown in formula I, RT-L1-RE3 (formula I), wherein RT is a monovalent group of the target molecule, RE3 is a monovalent group of the E3 ligase ligand, L1 is the linker linking A and B, and L1 is as shown in formula II below: —W-L2-W2— (II).

Abstract: The present disclosure discloses a lighting device and a lamp apparatus. The lighting device includes a light source supply assembly and a curved light guide element. The light source supply assembly includes a fixing base and a light source module. The fixing base has two opposite first accommodating areas, and the light source module is disposed in at least one of the two first accommodating areas, two ends of the curved light guide element are inserted into the two first accommodating areas, and one end of the curved light guide element corresponding to the light source module has a light source introduction bump, the light source introduction bump has a light incident surface corresponding to the light source module, the light source module supplies a light source, the light source enters from the light incident surface and propagates along the curved light guide element.