Abstract: A pyridine derivative and use thereof are provided. The compound has an obvious inhibitory effect on the activity of KRAS and PI3K proteins, can be used as a KRAS and/or PI3K protein inhibitor, and can be used for preparing a drug for treatment of diseases such as KRAS or PI3K protein-mediated cancer. The compound has an extremely strong inhibitory effect on a KRAS G12C inhibitor (e.g. AMG-510) drug-resistant cancer cells, and has a wide application prospect thereof.

Abstract: Aspects of the disclosure are directed to a method for use on a blockchain network that includes an accounting node subnetwork having accounting nodes configured to record a data block onto a blockchain and a service node having service nodes configured to verify data blocks recorded by the accounting nodes onto the blockchain. The method can include generating a signature based on transaction information to be included in a data block to be added onto the blockchain by using a key specific to the accounting node. The method can further include adding the transaction information and the generated signature to the data block and adding the data block onto the blockchain, and transmitting the signature to the service nodes in the service node subnetwork, so that the service nodes perform signature verification on the signature based on the key specific to the accounting node.

Abstract: A method for preparing a MOF of formula K2(M1xM21-x)3(Cit)2, where Cit is fully dehydrogenated citrate anion, M1 and M2 are metal cations of Zn, Co, Cu, Mg, Ni, Ca, Mn, Cr, Zr, and Fe, includes reacting 1 molar equivalent of citric acid with 0 to 1.0 molar equivalent of metal carbonate and/or metal oxide and 1.5 to 0.5 molar equivalent of a basic potassium compound (e.g., potassium carbonate, potassium bicarbonate and/or potassium hydroxide), where a total molar equivalent of the metal carbonate and potassium carbonate is 1.5. This step is followed by reacting with a metal salt aqueous solution. The total molar equivalent of the metal carbonate and/or metal oxide and metal acetate is 1 to 1.5. The reaction steps are conducted in DI water at a temperature below 100° C. and at ambient pressure. The MOF can be used to adsorb an acid gas from a fluid stream.

Abstract: There is provided a phase shifter having a phase shift region and a peripheral region, and including a first substrate, a second substrate and a dielectric layer between such two substrates; the first substrate includes a first dielectric substrate, a first electrode and a first auxiliary structure; the second substrate includes a second dielectric substrate, a second electrode and a second auxiliary structure; the phase shift region includes overlapping regions; the first electrode and the second electrode are located in the phase shift region, and have orthographic projections, on the first dielectric substrate, overlapped at least partially in the overlapping regions; the first auxiliary structure is in the peripheral region and on a side, close to the dielectric layer, of the first dielectric substrate; the second auxiliary structure is in the peripheral region and on a side, close to the dielectric layer, of the second dielectric substrate.

Abstract: A display panel, a mask used for evaporation, a mask assembly and a manufacturing method thereof are provided. The display panel includes: a base substrate; and a display area and a peripheral area; wherein, the peripheral area is provided with two types of dummy sub-pixel units, each type of dummy sub-pixel unit includes a dummy light-emitting material layer and a dummy auxiliary light-emitting layer, wherein, a first structure layer of a first dummy light-emitting material layer and a first dummy auxiliary light-emitting layer is arranged in the same layer as a second structure layer of a second dummy light-emitting material layer and a second dummy auxiliary light-emitting layer, and at least one of a size and a shape of an orthographic projection of the second structure layer on the base substrate is different from that of an orthographic projection of the first structure layer on the base substrate.

Abstract: Disclosed are an iron-based alloy strengthened by an intermetallic compound (IMC) phase-coated nano-rare earth oxide phase and a preparation method thereof. The preparation method includes the following steps: step S1, preparation of a pre-alloyed powder; step S2, first mechanical alloying; step S3, mixing by ball milling; step S4, second mechanical alloying; step S5, thermomechanical densification; and step S6, solid solution heat treatment and aging heat treatment.

Abstract: A phase shifter, a phase shifter array, an antenna array and an electronic device are provided and belong to the field of communication technology. The phase shifter includes: first and second dielectric substrates opposite to each other, a first transmission line and a second transmission line on a side of the first dielectric substrate close to the second dielectric substrate, patch electrodes on a side of the second dielectric substrate close to the first dielectric substrate, and a tunable dielectric layer between a layer where the transmission lines are located and a layer where the patch electrodes are located; wherein orthographic projections of two ends of each patch electrode on the first dielectric substrate overlap with orthographic projections of the first and second transmission lines on the first dielectric substrate, respectively; and at least two of the plurality of patch electrodes are connected to different first bias voltage lines.

Abstract: Embodiments of this disclosure disclose a resource transfer data management method and apparatus, and a storage medium, which belong to the field of Internet technologies. The method includes: receiving transaction data transmitted by a first server, wherein the transaction data is obtained by the first server by signing resource transfer data according to a private key of the first server; verifying the transaction data according to a public key of the first server; and generating a second block according to the transaction data and a feature value of a first block in a blockchain when the verification succeeds, and adding the second block as a next block of the first block to the blockchain.

Abstract: The present disclosure provides a phase shifter, an antenna and an electronic device, and belongs to the field of communication technology. The phase shifter includes a plurality of phase shifting units, a first power division network and a second power division network; each phase shifting unit includes a first transmission structure and a second transmission structure; the first power division network includes a first feeding port and a plurality of second feeding ports; the second power division network includes a third feeding port and a plurality of fourth feeding ports; and the first transmission structure of the phase shifting unit is electrically connected to one second feeding port; the second transmission structure of the phase shifting unit is electrically connected to one fourth feeding port.

Abstract: Provided is a device for maintaining an equipment configured to maintain a to-be-maintained equipment (1). The to-be-maintained equipment (1) includes a first side and a second side opposite to the first side, and the device includes: at least one guide rail (3) extending in a first direction, wherein the first direction is a direction pointing from the first side to the second side; a sliding mechanism (4) arranged on the guide rail (3) and configured to support the to-be-maintained equipment (1); and a driving mechanism (5) configured to drive the sliding mechanism (4) and the to-be-maintained equipment (1) to move along the guide rail (3), wherein the device is configured to allow the to-be-maintained equipment (1) to move along the guide rail (3) to change a maintenance space on the first side or the second side.

Abstract: Disclosed are a high-voltage three-phase four-bridge-arm topology structure and an inverter. The topology structure includes four bridge-arm circuits and a converter; one end of first bridge-arm circuit is connected to an A-phase high voltage line and the other end is connected to a first conversion module, one end of second bridge-arm circuit to a B-phase high voltage line and the other end to a second conversion module; one end of third bridge-arm circuit to a C-phase high voltage line and the other end to a third conversion module; one end of fourth bridge arm circuit to a ground line and the other end to a fourth conversion module, and the fourth bridge arm circuit is used to perform voltage compensation on the output voltages of the first bridge arm circuit, second bridge arm circuit, and third bridge arm circuit when the three phase high voltage lines are unbalanced.

Abstract: The present disclosure provides a two-stage cavitation generator for organic wastewater treatment, including a shrouded impeller, a stator, and a rotor. The shrouded impeller includes a front cover plate, blades, and a rear cover plate. Several blades are evenly distributed between the front cover plate and the rear cover plate. A working surface of the blade is an arc surface, and a back of the blade protrudes locally, so that a flow channel between the back of the blade and a working surface of its adjacent blade is narrowed locally, forming a throat structure. An outlet of the shrouded impeller is provided with the stator and the rotor, and the stator is located at an outer edge of the front cover plate and fixed on an inner wall of a volute. The rotor is mounted on the rear cover plate.

Abstract: Disclosed are a high-voltage three-phase four-bridge-arm topology structure and an inverter. The topology structure includes four bridge-arm circuits and a converter; one end of first bridge-arm circuit is connected to an A-phase high voltage line and the other end is connected to a first conversion module, one end of second bridge-arm circuit to a B-phase high voltage line and the other end to a second conversion module; one end of third bridge-arm circuit to a C-phase high voltage line and the other end to a third conversion module; one end of fourth bridge arm circuit to a ground line and the other end to a fourth conversion module, and the fourth bridge arm circuit is used to perform voltage compensation on the output voltages of the first bridge arm circuit, second bridge arm circuit, and third bridge arm circuit when the three phase high voltage lines are unbalanced.

Abstract: Provided are a sound gathering device for voiceprint monitoring and a preparation method. The sound gathering device is a cone structure and includes a front end portion (1) and a rear end portion (2), the front end portion (1) is trumpet-shaped, an inner wall surface of the front end portion (1) is present a pattern array of a microstructure (3), and the microstructure (3) presenting the pattern array is formed through laser etching. A sound wave frequency monitored by the sound gathering device is 50 Hz˜10 kHz, and a sound wave enters the sound gathering device from an entrance of the front end portion (1), is reflected through the pattern array of the microstructure (3) on the inner wall surface of the front end portion (1), and is transmitted from an exit of the rear end portion (2), and a sound pressure of the exit of the rear end portion (2) is 4 times˜8 times a sound pressure of the entrance of the front end portion (1).

Abstract: An automatic detection function-integrated detection apparatus includes a drill rod and an elastic water storage bag; two sides of the drill rod are a head region and a tail region, respectively; an interior of the drill rod has a water supply channel, a side wall of the drill rod is provided with a first channel, and a first valve is disposed in the first channel. The automatic detection function-integrated detection apparatus and method for the water flowing fractured zone may complete the detection of the water flowing fractured zone while drilling, and thus the labor intensity of workers may be reduced.

Abstract: An inspection system and method, the inspection system includes: a carrying device, at least one ray source and a detector assembly. The ray source and the detector assembly are lifted or lowered along a central axis of the carrying device relative to the carrying device. When viewed along the central axis, the ray source is translatable between scanning positions relative to the carrying device. When the ray source is at one of the scanning positions the ray source and the detector assembly are lifted or lowered relative to the carrying device along the central axis, and the ray source emits X-rays; and when the ray source and the detector assembly are lifted or lowered a predetermined distance the ray source translates to another scanning position. The inspection system further reconstructs a three-dimensional scanning image of the object to be inspected based on detection data of the detector assembly.

Abstract: Provided is a substrate supporting device, including a susceptor and a rotating tube. The susceptor is arranged in the process chamber of a substrate processing apparatus for supporting the substrate; the bottom surface of the susceptor is provided with a first limiting portion; the rotating tube, having a cylindrical structure, is arranged below the susceptor and supports the susceptor, the side wall of the rotating tube is provided with a second limiting portion corresponding to the first limiting portion in position, and relative movement between the rotating tube and the susceptor in the horizontal direction is limited when the two rotate through cooperation of the first limiting portion and the corresponding second limiting portion. The present invention also provides a substrate processing apparatus.

Abstract: A single-phase permanent magnet synchronous motor and dust collector. The single-phase permanent magnet synchronous motor includes a plurality of stator teeth, the plurality of stator teeth include at least: a first-type and second-type stator tooth; the first-type and second-type stator teeth enclose an annular working cavity for accommodating a rotor part, where the size of a central angle corresponding to a first contour line of an end face of the first-type stator tooth facing the rotor part is different from the size of a central angle corresponding to a second contour line of an end face of the second-type stator tooth facing the rotor part. The motor has a significantly reduced cogging torque, a greatly reduced torque ripple, and an obviously increased motor output torque. The single-phase permanent magnet synchronous motor is small in size, light in weight, simple in structure, convenient for large-scale manufacture and low in manufacturing cost.

Abstract: The present invention relates to the technical field of naked-eye 3D display, and provides a flicker-free directional backlight naked-eye 3D display device for multi-person viewing. An image control module converts image data into a 3D image, and a parallax 3D image is output to a first or Nth viewer through the cooperation of a display unit, a triangular prism-shaped microstructural directional beam-splitting film, and a directional backlight module, a quantity of viewers is determined by a human eye position signal in a display area collected by a human eye tracking module. The directional backlight module provides motion parallax, and the triangular prism-shaped microstructural directional beam-splitting film provides binocular parallax, so that the resolution is lost by only half in a horizontal direction and remains unchanged in a vertical direction, so that ultra HD 3D images can be implemented for one or more persons.

Abstract: A preparation method of a rare earth permanent magnetic material comprises one or more times of cryogenic treatment and tempering treatment. When the preparation method comprises one time of cryogenic treatment and tempering treatment, the cryogenic treatment is performed between sintering treatment and the tempering treatment, or is performed after the tempering treatment. When the preparation method comprises two or more times of cryogenic treatment and tempering treatment, at least one time of cryogenic treatment is performed between sintering treatment and the tempering treatment, and at least one time of cryogenic treatment is performed after the tempering treatment. The preparation method can refine and homogenize the structure and realize quick and convenient treatment, and can effectively improve the mechanical performance of the rare earth permanent magnetic material and maintain good magnetic performance.