Abstract: The present invention belongs to the fields of insecticides and acaricides, and particularly relates to a piperonylic acid derivative and application thereof. The structure is shown in a general formula I, and the definition of each substituent in the formula is described in the description. The compound of the general formula I has excellent insecticidal and acaricidal activity and can be used for controlling various pests and mites.

Abstract: A power amplifier circuit includes a differential amplifier circuit configured to amplify a radio-frequency signal, a transformer disposed on an output side with respect to the differential amplifier circuit and including a primary winding and a secondary winding, and a dispersion circuit coupled to a midpoint of the primary winding of the transformer and configured to operate as an adjustment circuit. The dispersion circuit is configured to adjust, based on a supply voltage controlled in accordance with the envelope of the radio-frequency signal, a bias (bias current or bias voltage) to be supplied to the differential amplifier circuit.

Abstract: An audio service module is communicatively connected to an audio abstraction module. The audio abstraction module is communicatively connected to a codec driver. The codec driver is communicatively connected to a codec chip. The audio service module receives a headset insertion/removal message and sends the message to the audio abstraction module. The audio abstraction module determines a digital-to-analog converter DAC channel configuration policy in the codec chip based on the headset insertion/removal message, and sends the DAC channel configuration policy to the codec driver. A DAC channel is used to transmit earpiece or headset data, and transmit motor data to a class-D amplifier to drive the motor. The codec driver controls the codec chip to reconfigure the DAC channel based on the DAC channel configuration policy.

Abstract: A method for crystal pulling is provided. The method includes the following. The method includes performing an equal-diameter process. The equal-diameter process is performed as follows. From the first equal-diameter stage to the third equal-diameter stage, the crystal rotation rate is gradually increased after starting at a first initial crystal rotation rate, and then is kept at a constant rotation rate after gradually increasing the crystal rotation rate. The crucible rotation rate is gradually increased from a first initial crucible rotation rate to a maximum crucible rotation rate after starting at the first initial crucible rotation rate in the first equal-diameter stage, the crucible rotation rate is kept at the maximum crucible rotation rate in the second equal-diameter stage, and the crucible rotation rate is gradually decreased after the second equal-diameter stage. The method further includes a cooling process.

Abstract: A flexible circuit board for transmitting a signal in a frequency band includes an intermediate region in which a signal line is disposed as a transmission line for transmitting the signal in the frequency band, and a pad region extending from the intermediate region and disposed at one end or both ends of the flexible circuit board, a pad electrically connected to the signal line and formed to face a first direction of the flexible circuit board, and a ground pattern overlapping at least a portion of the pad and formed to face a second direction of the flexible circuit board and disposed in the pad region where the second direction is opposite to the first direction.

Abstract: Disclosed is a hydraulic damping device level riding platform with adjustable resistance, which comprises a frame body, a shaft mechanism, a flywheel and a hydraulic damping mechanism, the shaft mechanism is arranged on the frame body, one end of the shaft mechanism is connected with the hydraulic damping mechanism and another end of the shaft mechanism is connected with the flywheel. The hydraulic damping mechanism comprises: a cavity; a rotating disc provided with blades, the rotating disc is arranged in the cavity; and a liquid level height adjusting mechanism movably connected inside the cavity to control a liquid level height in the cavity. The liquid level height of the liquid in the cavity is controlled through the liquid level height adjustment mechanism, so as to realize the control of the resistance of the rotating disc to the liquid.

Abstract: An MRAM memory cell includes a substrate and a transistor. The transistor includes: first and second source regions; a drain region between the first and second source regions; a first channel region between the drain region and the first source region; a second channel region between the drain region and the second source region; a first gate structure over the first channel region; and a second gate structure over the second channel region. A magnetic tunnel junction is overlying the transistor. The drain region is coupled to the magnetic tunnel junction. A first metal layer is overlying the transistor, and a second metal layer is overlying the first metal layer. The second and first metal layers couple a common source line signal to the first and second source regions of the MRAM memory cell and to those of a neighboring MRAM memory cell.

Abstract: An electronic package is provided and includes a substrate structure, an electronic element disposed on the substrate structure and an encapsulation layer encapsulating the electronic element, where at least one functional circuit is formed on a surface of a substrate body of the substrate structure, and a wire having a smaller width is arranged on a boundary line at a junction between an encapsulation area and a peripheral area, so that when a mold for forming the encapsulation layer is formed to cover the substrate structure, the mold will create a gap around the wire to serve as an exhaust passage. Therefore, when the encapsulation layer is formed, the exhaust passage can be used to exhaust air, so as to avoid problems such as the occurrence of voids or overflows of the encapsulation layer.

Abstract: A LDMOS transistor and manufacturing method includes: forming an epitaxial layer on a substrate of a first doping type; forming a gate structure on an upper surface of the epitaxial layer; forming a source region of a second doping type in the epitaxial layer, the second doping type is opposite to the first doping type; forming a patterned first insulating layer on the upper surface of the epitaxial layer and the gate structure, and at least exposes part of the source region; forming a first conductive channel by using a sidewall as a mask, the first conductive channel extends from the source region to an upper surface of the substrate so as to connect the source region with the substrate; and forming a drain region of the second doping type in the epitaxial layer.

Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning a picture into a plurality of tiles. A number of the tiles are included in a tile group. The mechanism determines whether the tile group is a raster scan tile group or a rectangular tile group. The number of tiles in the tile group is determined based on whether the tile group is the raster scan tile group or the rectangular tile group. The tiles are encoded into a bitstream based on the tile group. The bitstream is stored for communication toward a decoder.

Abstract: A display device includes a display panel including a pixel arranged thereon, a data driver configured to modulate video data to supply a data voltage to the pixel through a data line, a switching component configured to be turned on in response to a parking voltage enable signal to supply a parking voltage to the pixel, and a timing controller configured to control the data driver and the switching component to apply the data voltage to the pixel during a refresh period of a frame and the parking voltage to the pixel during one or more hold periods following the refresh period, wherein the timing controller adjusts a parking period for applying the parking voltage based on the luminance of the video data.

Abstract: In response to request signals transmitted from a terminal, a server generates prediction information relating to pharmacokinetics of a peptide. The server then transmits the prediction information to the terminal.

Abstract: A power supply device with dual power source planes and a server. The device includes: a plurality of controllers connected in parallel; a first Power Supply Unit (PSU) power source group and a second PSU power source group each includes two PSU power sources connected in parallel, and the first PSU power source group and the second PSU power source group are respectively located on two independent power source planes; and a power source backboard, wherein the power source backboard includes a first copper skin layer and a second copper skin layer, which are not connected with each other, the first PSU power source group is connected to the input end of each controller by means of the first copper skin layer, and the second PSU power source group is connected to the input end of each controller by means of the second copper skin layer.

Abstract: A passenger boarding bridge includes: a rotunda rotatable about a vertical axis; a tunnel unit; a cab; a lifting/lowering mechanism; and a travel unit. A control method includes, at a time of docking the cab with an entrance of an aircraft: calculating relative positional information indicating a position of the entrance as seen from the cab when the travel unit is at a movement start position; calculating positional information of a destination position based on the movement start position and the relative positional information in a case where a distance from the movement start position to the destination position is less than a horizontal distance from the vertical axis to a center point of the travel unit; calculating a target travel angle; and controlling the travel unit such that a travel angle of the travel unit is kept to the target travel angle during traveling.

Abstract: A terahertz element of an aspect of the present disclosure includes a semiconductor substrate, first and second conductive layers, and an active element. The first and second conductive layers are on the substrate and mutually insulated. The active element is on the substrate and electrically connected to the first and second conductive layers. The first conductive layer includes a first antenna part extending along a first direction, a first capacitor part offset from the active element in a second direction as viewed in a thickness direction of the substrate, and a first conductive part connected to the first capacitor part. The second direction is perpendicular to the thickness direction and first direction. The second conductive layer includes a second capacitor part, stacked over and insulated from the first capacitor part. The substrate includes a part exposed from the first and second capacitor parts.

Abstract: Provided are a method and system for detecting an oil abrasive particle size. The method includes: acquiring a voltage signal of an oil abrasive particle in real time, where the voltage signal is generated in real time in a process that the oil abrasive particle passes through an electromagnetic abrasive particle sensor; establishing a voltage curve coordinate system with an amplitude of the voltage signal as a Y-axis and a time of the voltage signal as an X-axis, and obtaining a voltage curve; performing feature extraction on the voltage curve, and obtaining an area S defined by a voltage curve within a half voltage signal cycle T and the X-axis and a maximum absolute value A of a voltage signal value according to the voltage curve coordinate system; and inputting S and A to a trained back propagation neural network for prediction to obtain a predicted oil abrasive particle size.

Abstract: Provided by the present disclosure are a display device and a display method therefor. By detecting the position of a viewer, the display angle of the scene in an image to be displayed is adjusted according to the position of the viewer so as to adapt to the viewing angle of the viewer. Therefore, the image viewed by the viewer can better conform to the real objective scene, and when the viewing angle changes, different angle pictures of an object can be viewed, thereby improving the display effect.

Abstract: This application is directed to a data interface having an input interface for receiving a differential input signal and a reference interface for providing a predefined reference voltage. A high pass filter is coupled to the input interface, and configured to filter the differential input signal and generate a filtered differential input signal. A differential integrator is coupled to the high pass filter and reference interface, and configured to receive the filtered differential input signal and generate a differential output signal including a first output signal and a second output signal. Each of the first and second output signals has a common mode output voltage substantially equal to the predefined reference voltage. In some embodiments, the data interface includes a connector including a plurality of data lanes and a pair of command pins that are distinct from the data lanes and coupled to the input interface.