Abstract: Disclosed are a method and a device for balancing crankshaft deformation e, a crankshaft with counterweights determined according to the method, and a scroll compressor using the crankshaft. The method includes: determining a component centrifugal force required by a counterweight to overcome the crankshaft deformation caused by both an orbiting scroll centrifugal force and a gas force; and determining the counterweight according to the component centrifugal force. The counterweight is arranged on the crankshaft.

Abstract: The disclosure provides a displaying substrate, a manufacturing method thereof, and a display panel, and relates to the technical field of display. The displaying substrate comprises a first supporting base (1), plurality of vibrating element modules (2), and a display module (3). The display module (3) comprises display units (31), connecting units (32) and hollowed-out units (33). Each connecting unit (32) is located between two adjacent display units (31). Each hollowed-out unit (33) is located between two adjacent display units (31) except an area where the corresponding connecting unit (32) is located. The hollowed-out units (33) are provided with cavities (40) corresponding to the vibrating element modules (2). Orthographic projections of the hollowed-out units (33) on a reference plane cover orthographic projections of the vibrating element modules (2) on the reference plane. The vibrating element modules (2) and the cavities (40) form a transducer.

Abstract: The present application discloses a class of guaianolide sesquiterpene lactone derivatives and pharmaceutical use thereof. The guaianolide sesquiterpene lactone derivative or a pharmaceutically acceptable salt thereof is shown as general formula I. In the present application, a class of novel guaianolide sesquiterpene lactone derivatives are found by structural optimization with abundant natural ingredients such as parthenolide and dehydrocostus lactone as raw materials, which derivatives have good inhibitory activity on the activation of the NLRP3 inflammasome, and the chemical stability, water solubility and oral bioavailability of which are significantly improved, and it is verified by experiments that the derivatives have inhibitory effects on the activity of the NLRP3 inflammasome and have potential pharmaceutical applications.

Abstract: The present disclosure relates to a backlight module, a method for designing the same, and a display device. The backlight module includes: a first substrate; a plurality of LED chips on the first substrate; and a light control structure on the first substrate. The backlight module includes a plurality of light control region groups in one-to-one correspondence with the plurality of light-emitting diode chips, each light control region group includes at least a first light control region and a second light control region. The light control structure includes a plurality of light control substructure groups respectively located in the plurality of light control region groups. Each light control substructure group includes at least a first light control substructure in the first light control region and a second light control substructure in the second light control region.

Abstract: The invention provides a continuous preparation method of 2,3,3,3-tetrafluoropropene, comprising the following steps: carrying out liquid-phase catalytic telomerization reaction on ethylene and carbon tetrachloride serving as initial raw materials in the presence of a composite catalyst to obtain a reaction product; performing two-stage membrane separation and purification on the reaction product, and then sequentially performing a primary high-temperature cracking reaction, a gas-phase chlorination reaction, a secondary high-temperature cracking reaction, a primary gas-phase catalytic fluorination reaction and a secondary gas-phase catalytic fluorination reaction to obtain a reaction product; condensing and rectifying the secondary gas-phase catalytic fluorination reaction product to obtain the 2,3,3,3-tetrafluoropropene product.

Abstract: Provided is a display backplate including an array substrate and a plurality of pairs of connection structures on the array substrate, wherein the array substrate includes a plurality of thin-film transistors and a common electrode signal line, wherein at least one of the plurality of thin-film transistors is connected to one of a pair of connection structures and the common electrode signal line is connected to the other of the pair of connection structures; and an area of a first section of the connection structure is negatively correlated with a distance between the first section and a surface of the array substrate, and the first section is parallel to the surface of the array substrate.

Abstract: An obtaining method and apparatus for a block group header, a storage medium, and an electronic device are disclosed. The method may include, performing a determination as to whether a target node in a blockchain system meets a preset condition, where the preset condition is indicative of at least one of, the target node receiving a block group header but failing to receive a preset number of legal blocks, or the target node failing to receive the block group header; identifying a cause of an event that the target node fails to receive the block group header, in response to the determination that the target node fails to receive the block group header, where the cause of the event comprises at least one of, the target node failing to receive the block group header, or the blockchain system failing to generate the block group header; and determining a method for acquiring by the target node, the block group header that fails to be received, according to the cause of the event.

Abstract: A petroleum drill-string shock absorber includes a drill collar nipple, a driving unit, an outer shell, a helical guideway, a drill bit base, a woven metal ring and a vibration-absorbing composite beam, the vibration-absorbing composite beam consists of a sheet metal and a flexible material gasket bonded by an adhesive; the drill collar nipple is connected with the helical guideway; the helical guideway is connected with the drill bit base; the driving unit rotates on the helical guideway; the outer shell is connected with the drill bit base; a metal seal ring is configured to seal a space formed between the outer shell and the drill collar nipple, a sealed space is formed among the drill collar nipple, the outer shell and the drill bit base; the woven metal ring is placed between the helical guideway and the drill bit base configured to absorb an axial impact vibration.

Abstract: Disclosed is a specific communication emitter identification method based on an instantaneous envelope equipotential constellation trace figure, including: selecting a specific communication emitter and acquiring its radio frequency signal fragment, performing instantaneous envelope extraction to the radio frequency fragment, and representing the instantaneous envelope with a constellation trace figure using a constellation trace figure two-dimensional visualization method, wherein the constellation trace figure serves as a radio frequency fingerprint of a transmitter, and inputting the radio frequency fingerprint into a classifier to identify. The disclosure overcomes drawbacks in conventional technologies.

Abstract: A location device for holding a number of probes is provided. The probes include a body, a first needle and a second needle respectively and coaxially disposed at opposite ends of the body. The location device includes a first support structure, a second support structure overlapping the first support structure and a number of through holes running through the first support structure and the second support structure. Each of the through holes includes a locating hole, a first aperture and a second aperture respectively disposed at opposite ends of and communicated with the locating hole and configured for respectively receiving the first, second needle of the probe. The first, second needle respectively extend out of the first, second aperture. The probes are clamped by the first, second support structure and located by the locating hole of the support device.

Abstract: A locating block holding device comprises a fixture floor, a magnet and a locating block. The fixture floor defines a channel and a coaxial receiving groove formed underneath the channel thereof, the receiving groove communicating with the channel with a shoulder formed between the receiving groove and the channel. The magnet is received in the receiving groove. The locating block, made from magnetic material such that the magnet is capable of firmly and stably holding the locating block on the shoulder in the channel, is disposed on the shoulder in the channel and above the magnet.

Abstract: A camera module includes a circuit board, an image sensor, a lens module, and a filter. The image sensor is mounted on the circuit board. The lens module is mounted on the circuit board and receives the image sensor therein. The lens module includes a barrel with at least one lens received therein and a holder. The holder defines a cavity. The cavity includes a first receiving portion, with the lens module received therein, and a second receiving portion, with the image sensor received therein. The filter covers an inner surface of the holder bounding the second receiving portion for trapping dust entered into the second receiving portion.