Abstract: A display device and an electronic device are provided. The display device includes a backlight module and a display panel which are stacked. The backlight module includes a back plate, at least one near-infrared light-emitting element, and at least one diffuser. The back plate includes a bottom plate and multiple side plates. The multiple side plates encircle and are connected to the bottom plate to form a receiving space. The at least one near-infrared light-emitting element is disposed in the receiving space. Each of the at least one near-infrared light-emitting element is disposed corresponding to one side plate. The near-infrared light-emitting element is inclined relative to the display panel, and configured to emit near-infrared light that can heat the skin of a user. The diffuser is disposed corresponding to a light-exiting surface of the near-infrared light-emitting element and configured to diffuse the near-infrared light emitted by the near-infrared light-emitting element.

Abstract: Embodiments of this application provide a random access method and an apparatus, and relate to the field of communication technologies, to reduce impact on an ongoing service of a terminal device, and improve service quality, thereby improving user experience. The method includes: a terminal device sends a random access preamble; the terminal device receives a random access response message, where the random access response message carries a timing advance TA value; and when the TA value is greater than a first preset threshold, the terminal device resends the random access preamble.

Abstract: A positive electrode material comprises: a porous material, a lithium-containing compound, metal nanoparticles, and a positive electrode active material, wherein the lithium-containing compound comprises an inorganic lithium source material and/or an organic lithium source material; and the metal nanoparticles comprise one or more of Al, Ti, Mn, Co, Ni, Cu, Zn, Zr, Mo, Ge, and Sn.

Abstract: The secondary battery functional material comprises a carrier material and an active material. The carrier material is a porous material having a catalytic effect on the active material at a voltage of 2.0-4.8 V, and the carrier material comprises one or more of porous metal materials, porous ceramic materials, porous carbon materials, porous plastics, and molecular sieves. The active material comprises a compound containing lithium element or a compound containing sodium element, the active material uniformly distributed in the form of fine particles in pores or the surface of the carrier material; and the particle size of the active material being between 0.1 nm and 10 ?m. The particle size of the carrier material is between 1 nm and 100 ?m.

Abstract: Implementations relating to a back contact solar cell and its preparation method are provided in this disclosure. In an implementation, a back contact solar cell includes a silicon substrate having a first surface. The first surface comprises a first conductive region, a second conductive region, and an insulation region located between the first conductive region and the second conductive region. The back contact solar cell further comprises a first transport layer located on the first conductive region and a second transport layer located on the second conductive region. The second transport layer extends from the second conductive region through the insulation region to the first conductive region, and partially covers the first transport layer, wherein a thickness of a first portion of the second transport layer located on the insulation region is greater than a thickness of a second portion of the second transport layer located on the second conductive region.

Abstract: A display apparatus and an electronic device are provided. The display apparatus includes a display panel, a protection housing, an ignition assembly, and a protection assembly. The display panel is arranged in the protection housing, and the protection housing includes a cooperating chamber, the protection assembly includes a compressible airbag and an ignition material, the cooperating chamber includes a gas chamber and a storage space, the gas chamber is communicated with the storage space, the storage space is configured to accommodate the ignition material, and the compressible airbag seals an opening of the gas chamber. The ignition assembly is connected to the protection housing, the ignition assembly includes an ignition leading-wire and an ignition leading-ball, one end of the ignition leading-wire is connected to the storage space, and the ignition leading-ball is configured to contact with the other end of the ignition leading-wire.

Abstract: An equalization training method and apparatus are described. The method includes obtaining a training rate of each of a master chip and a slave chip in a target phase of equalization training. The method also includes determining a target rate threshold interval within which the training rate in the target phase falls, determining, based on a correspondence between N+1 rate threshold intervals and N+1 equalization timeout periods, a target equalization timeout period corresponding to the target rate threshold interval, and configuring the target equalization timeout period as an equalization timeout period in the target phase.

Abstract: A high-initial-efficiency negative electrode material comprises a porous carbon matrix, metallic lithium particles, nano silicon particles, and a carbon shell; the porous carbon matrix is a porous carbon microsphere containing through holes with an average hole size of 1 nm-50 nm; the mass of the metallic lithium particles accounts for 10%-50% of the total mass of the high-initial-efficiency negative electrode material; the particle size of the nano silicon particles is between 0.1 nm and 45 nm, and the mass of the nano silicon particles accounts for 20%-70% of the total mass of the high-initial-efficiency negative electrode material. The use of the high-initial-efficiency negative electrode material in the lithium-ion secondary battery can improve the initial Coulombic efficiency of the battery, and the initial Coulombic efficiency of the battery is 99%-105%.

Abstract: The composite lithium storage material comprises: a spherical porous hard carbon material and nano silicon, which grows in pores of the spherical porous hard carbon material. The nano silicon is gasified from a powder by a high-frequency plasma treatment and then grows in the pores of the porous hard carbon material; and the particle size of the nano silicon is 0.1-50 nm, and the mass percentage of the nano silicon in the material is 1-70%. The porous hard carbon material is used as a matrix, and more nano silicon particles can be deposited in penetrating pores, increasing a higher compaction density, improving the charging specific capacity of the material, and facilitating the intercalation and deintercalation of lithium ions during the charging and discharging process; the damage of the volume expansion thereof to the structure is relieved, and the cycle performance and charging performance of the material are improved.

Abstract: A three-dimensional netted structure composite material comprises: a porous carbon microsphere containing netted structure through holes, silicon nanowires distributed in the through holes of the porous carbon microsphere, and a carbon shell. The silicon nanowires are formed by catalyzing, by means of Au or Ag, a silicon-containing gas and depositing same in the through holes; or the silicon nanowires are formed by depositing a silane gas in the through holes to form silicon oxide nanoparticles, then electrolyzing the silicon oxide nanoparticles in the through holes under a molten salt system. The silicon nanowires form three-dimensional netted structures in through holes of the porous carbon microsphere. Applying the three-dimensional netted structure composite material as a negative electrode active material in a lithium battery can endow the lithium battery with a relatively low volume expansion rate, a relatively high mass specific capacity, and good conductive performance and cycling stability.

Abstract: A display module is provided and includes: a backplane, defining a receiving slot; a light source assembly, arranged at a bottom of the receiving slot; an optical substrate, snapped to an upper portion of the accommodation slot, wherein a sealing cavity is defined between the optical substrate and the optical source assembly; a coolant, received in the sealing cavity; and a self-sealing fixation assembly, rotatably arranged on a slot wall of the receiving slot. In a first state, the optical substrate abuts against the self-sealing fixation assembly in a direction towards the bottom of the receiving slot; and, in a second state, the self-sealing fixation assembly is in an interference fit with the optical substrate, the self-sealing fixation assembly and the optical substrate are locked with each other to cooperatively define the sealing cavity.

Abstract: This application provides a communication method, an electronic device, and a computer-readable medium. The method includes: User equipment accesses a first network system via a first network device, where the user equipment and the first network device perform paging based on a first paging cycle; the user equipment receives a first instruction for handover from the first network system to a second network system; and the user equipment sends a paging cycle change instruction, where the paging cycle change instruction is used for causing a paging cycle of the user equipment to be the same as a paging cycle of a second network device corresponding to the user equipment after the user equipment accesses the second network system. This application can avoid call missing because the paging cycle of the user equipment and the paging cycle of the second network device of the second network system are different.

Abstract: A memory module, an electronic device, and a signal transmission method are provided. The memory module is a dual in-line memory module. A foolproof bayonet and a locking bayonet are disposed on a circuit board of the memory module, and a plurality of memory chips are separately disposed on board surfaces on two sides of the circuit board. The plurality of memory chips are connected to a processing chip through a parallel bus, and the processing chip is connected to a gold finger interface through a serial bus. Through this arrangement, the memory module can implement a serial interconnection relationship by using a connector, so that a data transmission rate can be reliably improved, crosstalk and simultaneous switching noise that are generated because high-speed transmission is performed based on the parallel bus can be avoided, and SI can be effectively improved.

Abstract: A use of SRT2104 in preparation of a drug for treatment of bronchial asthma is provided, relating to the field of bronchial asthma treatment. The comprehensive analysis of the activation effect of SRT2104 on silent information regulator 1 (SIRT1) in the airway epithelium under asthma conditions and its alleviation effect on asthma airway inflammation is conducted. It is demonstrated that SRT2104 can be activated in the airway epithelium under asthma condition and effectively control asthma airway inflammation. A foundation is laid for the discovery of clinical drug targets and the development of drugs for the treatment of bronchial asthma.

Abstract: The provided is a day-ahead and intra-day multi-time-scale optimal control method for a microgrid of a charging-swapping station. The day-ahead optimal scheduling is aimed at minimizing a net electricity purchase cost. The intra-day rolling optimal scheduling is aimed at minimizing a sum of the net electricity purchase cost and energy deviation penalty costs for energy storage systems and a charging-swapping station between a day-ahead scheduling plan and an intra-day rolling scheduling plan. The real-time feedback adjustment control is aimed at minimizing a sum of power deviations of distribution transformers, the energy storage systems, and the charging-swapping station between the intra-day rolling scheduling plan and a real-time feedback control.

Abstract: A mosaic distributed combined interval magnetization method includes: arranging a magnetization module including magnetic sources disposed at both ends of a yoke and having opposite magnetic properties; arranging a magnetic sensor disposed between the two magnetic sources, where the magnetic sensor is used to detect changes in a direction of a magnetic field of the test piece under detection; wrapping the yoke and the magnetic source to form a non-metallic wrapped structure of a detection component, where the magnetization module is divided into a first magnetization module and a second magnetization module which is symmetrically disposed about a center of the first magnetization module. The method solves the problem of inaccurate detection signals caused by defect diversity, thereby ensuring that defect classification and defect quantification will not occur during subsequent data analysis, which otherwise leads to problems such as unclear defect classification and inaccurate defect quantification.

Abstract: The present application provides an automatic method for forecasting strong cold waves from horizontal-to-vertical trough transition using wave truncation, which includes: reading geopotential height data within a 500 hPa forecast key region in forecasting operations, and converting a screen coordinate system into a Cartesian coordinate system; analyzing contour lines of the geopotential height field; repeatedly truncating and splitting waves to extract truncation points; selecting trough candidate nodes from a set of truncation points; screening trough candidate nodes and organizing and constructing a trough line; detecting a slope of the trough fitting line to find a horizontal trough; calculating a north-south extension distance of the found horizontal trough; comparing this north-south extension distance with a north-south extension distance at a next time; and in a case where an increase amount exceeds a preset threshold, determining the start of a horizontal-to-vertical trough transition, thereby foreca

Abstract: A pipeline in-line inspection tool based on distributed magnetic uniformity sensing includes a mobile carrier and a probe inspection assembly. The mobile carrier moves in a pipeline, a plurality of probe inspection assemblies are arranged on an outer side of the mobile carrier, and the plurality of probe inspection assemblies are distributed in sequence along an axis of the mobile carrier. The probe inspection assembly includes a plurality of elastic inspection ends, and the plurality of elastic inspection ends are distributed and arranged around the axis of the mobile carrier. The elastic inspection end is provided with an excitation structure, an inspection component and a wear-resistant structure. During inspection, the elastic inspection end is in abutment with an inner wall of the pipeline, the pipeline is magnetized through the excitation structure, and pipeline defects in magnetized areas are detected through the inspection component.

Abstract: An eddy current testing circuit, method and system, a storage medium, and a terminal belong to the technical field of eddy current non-destructive testing. A dual-path differential probe is formed mainly by combining a differential bridge and a transformer conditioning circuit, and relationships between amplitudes, phase parameters and lift-off respectively generated under alternating magnetic fields are analyzed by using signal parameters generated by a first differential signal and a second differential signal under respective alternating magnetic fields. Multi-parameter signal fusion is performed, so that the lift-off can be suppressed, and dual-path differential output achieves a high testing capability for defects under high lift-off change.

Abstract: Related to the field of mobile communication technologies, a communication method, an apparatus, and a chip are provided. The method includes: detecting that an electronic device is handed over from a first cell to a second cell; initiating a first communication cell update request; and in response to a call hold condition being satisfied, holding a calling state of the electronic device, where the call hold condition includes that the electronic device is currently in the calling state. This method can reduce a call drop probability of a terminal device.