Abstract: A method and a kit for detecting Mycobacterium tuberculosis are provided. The method includes a step of performing a nested qPCR assay to a specimen. The nested qPCR assay includes a first round of amplification using external primers and a second round of amplification using internal primers and a probe. The external primers have sequences of SEQ ID NOs. 1 and 2, and the internal primers and the probe have sequences of SEQ ID NOs. 3 to 5.

Abstract: A semiconductor structure includes a substrate, an isolation layer, a dielectric layer, an insulation layer, a conductor and a capping layer. The substrate has a concave portion. The isolation layer is located on a top surface of the substrate. The dielectric layer is located on the isolation layer. The insulation layer is located on a surface of the concave portion and extends to a sidewall of the isolation layer. The conductor is located on the insulation layer in the concave portion. The conductor has a first top surface and a second top surface, and the first top surface is closer to the dielectric layer than the second top surface. The capping layer is located in the concave portion and covers the conductor.

Abstract: The present invention provides a power factor correction circuit (21, 22), a power factor correction assembly (2) and an on-line uninterruptible power supply including the same. The power factor correction circuit (21) comprises a pulse width modulated rectifier (211, 221) and an isolated DC-DC converter (212, 222), wherein an output of the pulse width modulated rectifier (211, 221) is connected to an input of the isolated DC-DC converter (212, 222). The power factor correction assembly (2) comprises a plurality of power factor correction circuits (21, 22) described above, wherein inputs of pulse width modulated rectifiers (211, 221) in the plurality of power factor correction circuits (21, 22) are connected in series, and outputs of isolated DC-DC converters (212, 222) in the plurality of power factor correction circuits (21, 22) are connected in parallel.

Abstract: Disclosed is a millimeter wave-based switching power supply, including an input voltage circuit, an upper bridge inductor-inductor-capacitor (LLC) circuit and a lower bridge LLC circuit of a primary winding of a transformer, a millimeter wave switch control chip, and an output voltage circuit, where the upper bridge LLC circuit includes a first capacitor C1, an inductor L1, and an input end and an output end of the millimeter wave switch control chip; and the lower bridge LLC circuit includes a second capacitor C2, the inductor L1, and the output end and an earthing terminal of the millimeter wave switch control chip. By taking millimeter waves as a short distance transmission mode of carrier waves, either wireless transmission or signal isolation can be achieved through an antenna without an optocoupler and an extra isolation layer, so that high signal transmission speed, small delay and high efficiency can be guaranteed.

Abstract: An optical fiber connector includes a connecting unit, an adapter unit, and an attenuation unit. The adapter unit includes an insertion seat connected removably to a main housing of the connecting unit, and two guide frame bodies located respectively at two opposite sides of the insertion seat in a transverse direction. The insertion seat has two insertion holes spaced apart in the transverse direction and extending in a front-rear direction. Each guide frame body extends in the front-rear direction away from the connecting unit. The attenuation unit includes two attenuation components, two rear ferrules, and two front ferrules. The attenuation components are arranged in the transverse direction and disposed within the main housing. The rear ferrules respectively extend rearwardly from rear ends of the attenuation components into the insertion holes. The front ferrules respectively extend forwardly from front ends of the attenuation components through and outwardly of the main housing.

Abstract: A magnetic multi-pole propulsion array system is applied to at least one external cathode and includes a plurality of magnetic multi-pole thrusters connected adjacent to each other. Each magnetic multi-pole thruster includes a propellant provider, a discharge chamber, an anode and a plurality of magnetic components. The propellant provider outputs propellant. The discharge chamber is connected with the propellant provider to accommodate the propellant. The anode is disposed inside the discharge chamber to generate an electric field. The plurality of magnetic components is respectively disposed on several sides of the discharge chamber. One of the several sides of the discharge chamber of the magnetic multi-pole thruster is applied for one side of a discharge chamber of another magnetic multi-pole thruster.

Abstract: Provided are a binder composition, an electrode, a battery and a power consuming device. The binder composition comprises a fluoropolymer A and a copolymer B, wherein the copolymer B comprises a structural unit derived from a monomer containing a cyano group and a structural unit derived from a monomer containing an ester group. The binder of the present application has a strong bonding force, and the cycling performance of the secondary battery comprising same is excellent.

Abstract: An embedded circuit board, made without gas bubbles or significant internal gaps according to a manufacturing method which is provided, includes an inner layer assembly, an embedded element, and first and second insulating elements. The inner layer assembly comprises a first main portion with opposing first and second surfaces and a first groove not extending to the second surface is positioned at the first surface. A first opening penetrates the second surface, and the first opening and the first groove are connected. The first groove carries electronic elements for embedment. The first insulating element covers the first surface and a surface of the embedded element away from the second surface. The second insulating element covers the second surface and extends into the first opening to be in contact with the embedded element.

Abstract: Embodiments of this application provide a method for displaying a two-dimensional code and an electronic device. The method is performed by an electronic device, and includes: obtaining first sensor data, where the first sensor data is collected at a first moment; if it is determined, based on the first sensor data, that a first action of a user corresponding to the first moment is a preset action, determining whether the user performs a wrist turning action within a preset duration range starting from the first moment; and displaying a preset two-dimensional code page when the user performs a wrist turning action within the preset duration range. In the method, a process of presenting a two-dimensional code by the user can be simple and efficient.

Abstract: Provided are an audio/video processing method and apparatus, a device, and a storage medium. The method comprises: displaying text data corresponding to an audio/video to be edited, wherein the text data has a mapping relation with an audio/video timestamp of said audio/video; displaying said audio/video according to a time axis track; in response to a preset operation triggered for target text data in the text data, determining an audio/video timestamp corresponding to the target text data as a target audio/video timestamp; and processing, on the basis of the preset operation, an audio/video clip corresponding to the target audio/video timestamp in said audio/video.

Abstract: Disclosed herein, inter alia, are compounds, compositions, and methods of use thereof in the sequencing of a nucleic acid.

Abstract: A multi-tap Differential Feedforward Equalizer (DFFE) configuration with both precursor and postcursor taps is provided. The DFFE has reduced noise and/or crosstalk characteristics when compared to a Feedforward Equalizer (FFE) since DFFE uses decision outputs of slicers as inputs to a finite impulse response (FIR) unlike FFE which uses actual analog signal inputs. The digital outputs of the tentative decision slicers are multiplied with tap coefficients to reduce noise. Further, since digital outputs are used as the multiplier inputs, the multipliers effectively work as adders which are less complex to implement. The decisions at the outputs of the tentative decision slicers are tentative and are used in a FIR filter to equalize the signal; the equalized signal may be provided as input to the next stage slicers. The bit-error-rate (BER) of the final stage decisions are lower or better than the BER of the previous stage tentative decisions.

Abstract: The present disclosure provides a video processing method and apparatus, an electronic device, and a non-transitory computer readable storage medium. The method includes: displaying, when a predetermined application program enters a shooting mode, a predetermined shooting interface in a current interface of the application program, the shooting interface having a predetermined initial background; obtaining an image frame of a target object and the initial background; combining the image frame as a foreground with the initial background for displaying in the shooting interface; starting, in response to receiving a first shooting start instruction, generation of video data based on the image frame and the initial background; and stopping, in response to receiving a first shooting stop instruction, generation of video data to obtain first video data as generated.

Abstract: A method for determining a consistency coefficient of a power-law cement grout includes: determining a water-cement ratio of the power-law cement grout; according to engineering practice requirements, determining a time required to determine the consistency coefficient of the power-law cement grout; and obtaining the consistency coefficient of the power-law cement grout. The method is accurate and reliable, requires less calculation, etc.; and has very high practical value and popularization value in environmental protection and ecological restoration.

Abstract: The present disclosure discloses a blended ternary positive-electrode material, a preparation method thereof and a lithium ion battery, and relates to the field of lithium battery technologies. A temperature-sensitive precursor type material is taken as a raw material, a large-particle precursor, a small-particle precursor and lithium sources are presintered to obtain a first presintered material and a second presintered material, presintered materials and binders are then mixed, compacted and punctured to obtain a first to-be-sintered material block and a second to-be-sintered material block, the first to-be-sintered material block and the second to-be-sintered material block are loaded into a sagger together for primary sintering, and using a periphery-center regional mode or an upper-lower-layer distribution mode, the first presintered material is distributed at a periphery or an upper layer, and the second presintered material is distributed at a center or a lower layer.

Abstract: This application provides a method. The method may include: a transmit-side device determines frequency-domain positions of reference signals that are used for phase noise estimation and that are on a plurality of resource blocks, where there are a plurality of reference signals on at least one resource block in the plurality of resource blocks, the reference signals occupy consecutive frequency-domain resources on the at least one resource block, for example, occupy a plurality of consecutive subcarriers; the transmit-side device maps, based on the frequency-domain positions of the reference signals on the plurality of resource blocks, the reference signals to one or more symbols, and sends, to a receive-side device, the one or more symbols to which the reference signals are mapped; and the receive-side device performs phase noise estimation based on the reference signals.

Abstract: The embodiments of the present disclosure provide video shooting method and apparatus, electronic device and storage medium. The method comprises: receiving a first trigger operation for target content displayed in a target page, the target page comprising a webpage material display page and/or a video playing page; in response to the first trigger operation, acquiring a target picture containing the target content, starting a camera, and displaying a shooting page, wherein a preview picture of a target object acquired by the camera is displayed in the shooting page with the target picture as a background; receiving a video shooting operation acting in the shooting page; and in response to the video shooting operation, shooting a first video of the target object with the target picture as a video background.

Abstract: A voltage regulator having a multiple of main stages and at least one accelerated voltage regulator (AVR) bridge is provided. The main stages may respond to low frequency current transients and provide DC output voltage regulation. The AVR bridges are switched much faster than the main stages and respond to high frequency current transients without regulating the DC output voltage. The AVR bridge frequency response range can overlap with the main stage frequency response range, and the lowest frequency to which the AVR bridges respond may be set lower than the highest frequency to which the main stages respond.

Abstract: A video processing method and apparatus, a device, a storage medium, and a computer program product are provided. The video processing method includes displaying a combined photographing page in response to a preset combined photographing operation on a target video, the combined photographing page being provided with an album entry; displaying an album page in response to a trigger operation on the album entry; acquiring a user material based on the album page; and generating a combined photographing result video based on the user material and the target video.

Abstract: This application provides an information transmission method and apparatus. The method includes: receiving first indication information from a network device, where the first indication information indicates an association relationship between a plurality of branch networks in an artificial intelligence AI network and channel state information CSI measurement configuration information; and obtaining first quantization information based on a first branch network and channel information, where the first branch network is associated with current CSI measurement configuration information, and the first branch network belongs to the plurality of branch networks in the AI network.