Abstract: A data processing method including acquiring, by a first service node in a group forwarding layer, a service processing request related to a target group from an access layer, the service processing request comprising a first group identifier of the target group, determining, by the first service node, target service nodes caching basic group data of the target group from a plurality of second service nodes in a group logic layer according to the first group identifier, the target service nodes being some nodes among the plurality of second service nodes, and transmitting, by the first service node, the service processing request to the target service nodes, such that the target service nodes determine a member size of the target group according to the basic group data of the target group and perform processing on the service processing request according to the member size of the target group.

Abstract: An enhanced flash evaporation/electrospinning composite spinning equipment includes a flash spinning equipment, an electrospinning equipment, and a grounded receiving conveyor belt; the flash spinning equipment includes a flash spinning spinneret unit, the flash spinning spinneret unit includes a first spinneret, and the first spinneret is grounded; the electrospinning equipment includes a high-voltage power supply and an electrospinning spinneret unit, the electrospinning spinneret unit includes a second spinneret, and the second spinneret is connected to the high-voltage power supply; the first spinneret and the second spinneret are both located above the receiving conveyor belt at opposite positions with a distance of D, and the value range of D is 15-40 cm. The enhanced flash evaporation/electrospinning composite spinning equipment has a simple structure, and can prepare products that are not easy to delaminate, and excellent in waterproof performance and air permeability.

Abstract: The present application discloses a display panel and a display device. The display panel includes substrate, a plurality of pixel driving circuits, and a light-shielding layer. By disposing the light-shielding layer in a transition display region of the display panel, disposing the light-shielding layer between the substrate and an active layer of each of transistors of the pixel driving circuits, and configuring an orthographic projection of light-shielding portions on the substrate to cover an orthographic projection of overlapping portions on the substrate, the light-shielding layer can shield infrared light emitted by the transmitting sensor, thereby preventing the transistors from an interference of the infrared light.

Abstract: A gas permeable polytetrafluoroethylene stretched film is prepared by bending powder of a modified polytetrafluoroethylene resin and powder of a modified fluoropolymer resin and stretching the powder of the modified polytetrafluoroethylene resin and the powder of the modified fluoropolymer resin. The modified polytetrafluoroethylene resin is copolymerised by mixing a tetrafluoroethylene monomer and a modified monomer. The modified monomer is prepared by reaction of hydroxyethyl acrylate, perfluoroalkylethyl acrylate and isocyanate ethylacrylate. The crystallinity in the system is greatly reduced through the multi-branched structure of the modified polytetrafluoroethylene polymer, and at the same time, the strenching strength of the gas permeable polytetrafluoroethylene stretched film is greatly improved through adding the modified fluoropolymer powder. In this manner, the polytetrafluoroethylene stretched film has strong permeability and waterproofness, thereby having stronger safety.

Abstract: A preparation method of the polytetrafluoroethylene stretched film comprises: (1) uniformly mixing a modified polytetrafluoroethylene emulsion and a lubricant, and carrying out extrusion calendaring; and (2) longitudinally stretching and then transversely stretching at a high temperature, and sintering and curing at a high temperature for 5-15 minutes after stretching is completed, to obtain a product, namely the polytetrafluoroethylene stretched film. According to the method, a polymer AOI modified monomer is added, so that the prepared polytetrafluoroethylene stretched film is soft, good in tensile property, small in pore diameter, high in porosity and uniform in pore diameter distribution. In addition, an ammonium salt polymer dispersant is used as a preparation raw material, and a product of the ammonium salt polymer dispersant is green and clean, does not cause environmental pollution and does not participate in human metabolism.

Abstract: In the process of preparing nanofibers by using an electrospinning process and preparing micron fibers by using a flash-spinning process, an electrospinning nozzle and a flash-spinning nozzle are controlled to be located above a receiving conveyor belt, and are directly opposite to each other with a spacing of 15-40 cm, and the electrospinning nozzle is controlled to be connected to a high-voltage power supply, and the flash-spinning nozzle and the receiving conveyor belt are controlled to be grounded to prepare a product; the prepared product has a film-like structure and consists of nanofibers and micron fibers. The micron fibers are mutually entangled, curled and interpenetrated, and the nanofibers are uniformly interspersed and distributed within the micron fibers, some of the nanofibers and the micron fibers forming entangled and interpenetrated structures, with mutual bonding between the nanofibers, between the micron fibers and between the nanofibers and the micron fibers.

Abstract: A gas permeable polytetrafluoroethylene stretched film is prepared by bending power of a modified polytetrafluoroethylene resin and power of a modified fluoropolymer resin and stretching the power of the modified polytetrafluoroethylene resin and the power of the modified fluoropolymer resin. The modified polytetrafluoroethylene resin is copolymerised by mixing a tetrafluoroethylene monomer and a modified monomer. The modified monomer is prepared by reaction of hydroxyethyl acrylate, perfluoroalkylethyl acrylate and isocyanate ethylacrylate. The crystallinity in the system is greatly reduced through the multi-branched structure of the modified polytetrafluoroethylene polymer, and at the same time, the strenching stength of the gas permeable polytetrafluoroethylene stretched film is greatly improved through adding the modified fluoropolymer powder. In this manner, the polytetrafluoroethylene stretched film has strong permeability and waterproofness, thereby having stronger safety.

Abstract: In a method for preparing a nanofiber based oil-water separation and purification material having a shifted inclined-hole structure, firstly, a melt-spinning method is used for preparing a multi-layer fiber membrane, and then according to the requirements of the size, number and arrangement of holes on each layer of fiber membrane, a puncher is used for punching inclined frustum cone-shaped through holes on the fiber membrane. Finally, according to the requirements of relative positions of the inclined frustum cone-shaped through holes on fiber membranes in different layers, multiple layers of fiber membranes are composited to prepare a nanofiber based oil-water separation and purification material having a shifted inclined-hole structure. The oil-water separation and purification material is a multi-layer composite fiber membrane. Each layer of fiber membrane has a plurality of uniformly distributed inclined frustum cone-shaped through holes.

Abstract: The present invention provides a polyurethane nanofiber waterproof moisture-permeable film, a preparation method thereof and application thereof. The polyurethane nanofiber waterproof moisture-permeable film is prepared from two kinds of isothiocyanate and two kinds of polyethylene glycol as raw materials, and the polyurethane nanofiber waterproof moisture-permeable film has good water pressure resistance, tensile property, and moisture permeability. In addition, the polyurethane nanofiber waterproof moisture-permeable film is prepared by adopting an electrostatic spinning method, is low in cost, simple to operate and high in production efficiency, and has a good application prospect in the fields of clothing, medical treatment, electronic appliances, and the like.

Abstract: An apparatus for wireless communication includes a receiver configured to receive a request for data associated with an Internet-of-things (IoT) service session with an IoT cloud server. The apparatus further includes a transmitter configured to transmit, based on receiving the request and prior to transmitting a response to the request, a message indicating a timing parameter associated with availability of the data. The receiver is further configured to receive an uplink grant at a time that is based on the timing parameter, and the transmitter is further configured to transmit the response to the request based on the uplink grant. The response includes at least a subset of the data.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may activate a first bandwidth part (BWP), of a set of candidate BWPs, having a first bandwidth size. The UE may receive, based at least in part on satisfaction of a buffer status report (BSR) threshold for a time period, an indication to activate a second BWP, of the set of candidate BWPs, having a second bandwidth size. Numerous other aspects are described.

Abstract: A display panel and a preparation method thereof are provided. A first display region and a second display region are defined on the display panel, and the display panel includes: a substrate, a driving device layer, and a light-emitting device layer. In the second display region, the driving device layer is further provided with a dummy through hole located within an orthographic projection range of at least one of the light-emitting subpixels on the substrate, and the dummy through hole and the at least one light-emitting subpixel are insulated from each other. The display panel can ensure the electrical uniformity between thin film transistors (TFTs) in the second display region, thereby alleviating non-uniform display.

Abstract: The present application discloses a display panel and a display device. The display panel includes substrate, a plurality of pixel driving circuits, and a light-shielding layer. By disposing the light-shielding layer in a transition display region of the display panel, disposing the light-shielding layer between the substrate and an active layer of each of transistors of the pixel driving circuits, and configuring an orthographic projection of light-shielding portions on the substrate to cover an orthographic projection of overlapping portions on the substrate, the light-shielding layer can shield infrared light emitted by the transmitting sensor, thereby preventing the transistors from an interference of the infrared light.

Abstract: Certain aspects of the present disclosure provide techniques for dynamic slot management for radio frames. A method that may be performed by abase station (BS) includes determining a physical resource block (PRB) utilization of each active slot of a plurality of active slots over a first monitoring period of time. The method also includes calculating, based on the PRB utilization of each of the plurality of active slots, a PRB average utilization value over the first monitoring period of time. The method further includes determining whether the PRB average utilization value satisfies a first PRB threshold value. The method also includes in response to determining that the PRB average utilization value fails to satisfy the first PRB threshold value, deactivating a set of active slots of the plurality of active slots resulting in a modified plurality of active slots over the first monitoring period of time.

Abstract: The disclosure provides a method for preparing a structured hydrogel and a method for preparing a hydrogel heart valve. In the disclosure, the method includes: providing a photocurable hydrogel ink; establishing a three-dimensional digital model, and conducting photocuring 3D printing on the photocurable hydrogel ink to obtain a printed hydrogel; and immersing the printed hydrogel in water to obtain the structured functional hydrogel, wherein the photocurable hydrogel ink comprises: a high-density hydrogen-bonded unsaturated monomer, a photoinitiator, a dye, and a solvent; and the solvent comprises water and dimethyl sulfoxide.

Abstract: One example method includes receiving a digital image of a needle core prostate biopsy, displaying, using a display device, a magnified portion of the digital image, obtaining, from a deep learning model, Gleason scores corresponding to patches of the magnified portion of the digital image, and displaying, using the display device, a superimposed overlay on the magnified portion of the digital image based on the Gleason scores and corresponding confidence values of the Gleason scores, the superimposed overlay comprising one or more outlines corresponding one or more Gleason scores associated with the magnified portion of the digital image and comprising image patches having colors based on a Gleason score of the Gleason scores corresponding to an underlying portion of the magnified portion of the digital image and a confidence value of the corresponding Gleason score.

Abstract: The present invention relates to the field of 3D printing technology, and provides a photocurable 3D printing polyimide ink, and a preparation method and application thereof. The photocurable 3D printing polyimide ink includes the following components in the following weight percentages: 40 to 60% of a photocurable polyamic acid, 5 to 40% of an organic solvent, 10 to 50% of a reactive diluent, 1 to 10% of a chain extender, and 1 to 3% of a photoinitiator. The photocurable 3D printing polyimide ink provided by the present invention has excellent mechanical properties, thermal stability, relatively high printing accuracy and relatively low shrinkage; a molded device obtained by 3D printing has excellent properties including high accuracy, great dimensional stability, high strength and corrosion resistance, excellent flexibility, high temperature resistance and relatively low shrinkage. The method for preparing the photocurable 3D printing polyimide ink has a simple process and lower energy consumption.

Abstract: An unmanned aerial vehicle is provided and includes: an unmanned aerial vehicle body, including an airframe and an articles storing device; an arm, including at least two front arms symmetrically arranged with respect to a central axis of the airframe along a front-rear direction and at least two rear arms symmetrically arranged with respect to the central axis of the airframe; and a rotor-wing electric motor, including a front electric motor and a rear electric motor. A first end of the front arm is connected with a front end of the airframe, and a second end of the front arm is provided with the front electric motor to drive the unmanned aerial vehicle. A first end of the rear arm is connected with a rear end of the airframe, and a second end of the rear arm is provided with the rear electric motor to drive the unmanned aerial vehicle.

Abstract: The present invention relates to the field of 3D printing technology, and provides a photocurable 3D printing polyimide ink, and a preparation method and application thereof. The photocurable 3D printing polyimide ink includes the following components in the following weight percentages: 40 to 60% of a photocurable polyamic acid, 5 to 40% of an organic solvent, 10 to 50% of a reactive diluent, 1 to 10% of a chain extender, and 1 to 3% of a photoinitiator. The photocurable 3D printing polyimide ink provided by the present invention has excellent mechanical properties, thermal stability, relatively high printing accuracy and relatively low shrinkage; a molded device obtained by 3D printing has excellent properties including high accuracy, great dimensional stability, high strength and corrosion resistance, excellent flexibility, high temperature resistance and relatively low shrinkage. The method for preparing the photocurable 3D printing polyimide ink has a simple process and lower energy consumption.