Abstract: A network bandwidth estimation method and apparatus, an electronic device and a storage medium are provided. The method includes: sending a bandwidth test file to a service terminal, and respectively acquiring network state parameters before and after sending the bandwidth test file, wherein a volume of the bandwidth test file is less than a preset file volume threshold; determining a first network bandwidth and a second network bandwidth based on the network state parameters and the volume of the bandwidth test file; inputting the network state parameters, the first network bandwidth, and the second network bandwidth into a current latest network bandwidth estimation model to obtain a target network bandwidth estimation result.

Abstract: A LED includes: a metal substrate including a first metal layer; a semiconductor layer sequence disposed on the metal substrate, where the semiconductor layer sequence includes a first semiconductor layer, a second semiconductor layer and an active layer disposed between the first semiconductor layer and the second semiconductor layer; a first electrode, electrically connected to the first semiconductor layer; and a second electrode, electrically connected to the second semiconductor layer. A side of the metal substrate facing away the semiconductor layer sequence defines a groove, a second metal layer is disposed in the groove, the metal substrate includes a groove edge which is protruded, and the groove edge is no more than 0.5 ?m higher than the second metal layer, enhancing the reliability of the LED in the packaged bonding product.

Abstract: This application provides a communication method and apparatus. The method includes: A terminal device obtains first configuration information, where the first configuration information includes one or more of the following: a type of first information, a quantization granularity of the first information, a feedback resource of the first information, a feedback periodicity of the first information, a measurement resource corresponding to the first information, a reference signal corresponding to the first information, and a mapping relationship between the reference signal corresponding to the first information and the measurement resource corresponding to the first information. The terminal device sends the first information to a network device based on the first configuration information, where the first information is used to assist an artificial intelligence (AI) model of the network device. The network device assists the AI model of the network device based on the first information.

Abstract: A near-eye display apparatus, a display method thereof and a wearable device. The near-eye display apparatus comprises: at least one first display unit (31), the first display unit (31) being configured to form at an imaging position a first image; at least one second display unit (32), the second display unit (32) being configured to form at the imaging position a second image, the first image and the second image being spliced to form a display image; and an optical path adjustment structure (5), the optical path adjustment structure (5) being configured to transmit towards the direction of the imaging position at least part of emergent light rays of the first display unit (31), and to reflect towards the direction of the imaging position at least part of emergent light rays of the second display unit (32).

Abstract: An energy storage converter and an energy storage system are provide. The energy storage converter includes: a DC switching power supply circuit configured to provide a first power supply using DC power from the DC side port; an AC switching power supply circuit configured to provide a second power supply using AC power from the AC side port; a power supply circuit configured to supply power to the energy storage converter using the first power supply or the second power supply; and a control circuit configured to, based on an operation state of the energy storage converter, control the DC switching power supply circuit or the AC switching power supply circuit to provide the power supply circuit with power supply. A power supply mode is selected based on an operation state of the energy storage converter. The DC/AC switching power supply circuit independently supplies power at the same time.

Abstract: Provided are establishment and suspension acclimation of a Crandell Reese Feline Kidney (CRFK) adherent cell line, and its application. The CRFK cell line, named CRFK-BLA, is deposited at the China General Microbiological Culture Collection Center (CGMCC), with the address being Institute of Microbiology, Chinese Academy of Sciences, No. 3, Yard No. 1, Beichen West Road, Chaoyang District, Beijing, the deposit number being CGMCC NO: 45703; the CRFK cell line was classified and named CRFK cells, and was deposited on Aug. 17, 2023. A serum-free complete suspension culture type CRFK cell line obtained by acclimation on the basis of CRFK-BLA is named CRFK-BLS, and is deposited at the China General Microbiological Culture Collection Center (CGMCC), with the address being Institute of Microbiology, Chinese Academy of Sciences, No. 3, Yard No. 1, Beichen West Road, Chaoyang District, Beijing, the deposit number being CGMCC NO: 45704; the CRFK cell line was classified and named CRFK suspension cells.

Abstract: A case for an electronic device can include a case body including an exterior surface and an interior surface, the interior surface being positioned opposite the exterior surface. The case can additionally include a button body positioned at least partially within the case body between the exterior surface and the interior surface, the button body being movable inward and outward relative to the case body along an axis of button travel. The case can further include a biasing structure having a contact surface configured to contact the button body, the biasing structure configured to bias the button body toward the interior surface along the axis of button travel.

Abstract: Provided are establishment and suspension acclimation of a Crandell Reese Feline Kidney (CRFK) adherent cell line, and its application. The CRFK cell line, named CRFK-BLA, is deposited at the China General Microbiological Culture Collection Center (CGMCC), with the address being Institute of Microbiology, Chinese Academy of Sciences, No. 3, Yard No. 1, Beichen West Road, Chaoyang District, Beijing, the deposit number being CGMCC NO: 45703; the CRFK cell line was classified and named CRFK cells, and was deposited on Aug. 17, 2023. A serum-free complete suspension culture type CRFK cell line obtained by acclimation on the basis of CRFK-BLA is named CRFK-BLS, and is deposited at the China General Microbiological Culture Collection Center (CGMCC), with the address being Institute of Microbiology, Chinese Academy of Sciences, No. 3, Yard No. 1, Beichen West Road, Chaoyang District, Beijing, the deposit number being CGMCC NO: 45704; the CRFK cell line was classified and named CRFK suspension cells.

Abstract: The present disclosure relates to a production process and device for synthesizing bisphenol A by a resin method, including a condensation reaction unit for performing a catalytic condensation reaction between phenol and acetone to generate bisphenol A, a first-stage adduct crystallization unit for mixing a concentrated solution with adduct crystals recycled after melting and then performing adduct crystallization, a liquid-phase dephenolization unit for melting an adduct to yield a bisphenol A product, a secondary adduct crystallization unit for recycling phenol and bisphenol A from a mother solution, a solvent recycling unit for recycling unreacted phenol and unreacted acetone, and discharging phenol-containing process water for sewage treatment, and a cracking and rearrangement unit for recycling the phenol from the mother solution, and convert bisphenol A, 2,4-bisphenol A and the like therein in the mother solution into the bisphenol A.

Abstract: Provided are a data processing method and apparatus applied to a target device in which a Linux operating system is running. A first program is deployed in the Linux operating system. The method includes: loading a target loading and invasion machine into a first memory space of the first program, and creating, in the first memory space, a second memory space for the target loading and invasion machine, where the second memory space is simply available to the target loading and invasion machine and to a program loadable by the target loading and invasion machine; configuring a second runtime environment for a second program, where the second runtime environment is isolated from a first runtime environment of the first program; and loading the second program into the second memory space based on the second runtime environment, and running the second program in a threaded manner.

Abstract: The present invention relates to the field of coal mine concealed fire zone detection, in particular to a coal spontaneous combustion downhole detection system and method based on a self-potential method. The coal spontaneous combustion downhole detection system comprises a self-potential detection apparatus and a self-potential processing apparatus; the self-potential detection apparatus comprises measuring electrodes, a reference electrode and metal anchor rods; the measuring electrodes are arranged on a top plate of a goaf roadway, are fixed to the metal anchor rods, and are in wireless connection with the reference electrode through the metal anchor rods; the self-potential processing apparatus comprises a data processing sensor for processing potential data and an imaging sensor for converting data into images; and the measuring electrodes and the reference electrode are in wireless connection with the data processing sensor.

Abstract: Embodiments of the present application disclose a photonic chip, a LiDAR, and a mobile device. The photonic chip has a substrate, a cladding layer, a first coupler, a first beam splitter, an emitting waveguide module, and a first optical adjusting monitoring module. The first beam splitter includes a first port, a second port, a third port, and a fourth port. The first beam splitter is configured to output the optical signal input through the first port through the third port and the fourth port, and to output the optical signal input through the third port through the first port and the second port. The first optical adjusting monitoring module includes a first photodetector. Monitors the optical power of the return light received by the emitting waveguide module through the first optical adjusting monitoring module integrated on the photonic chip, making the process more time-saving and labor-saving.

Abstract: A vehicle-mounted controller includes: a GNSS module, an MPU and an MCU. The GNSS module transmits a pulse signal to the MPU via the rigid line and transmits recommended positioning information to the MPU via the serial port line at the moment when a change occurs in high and low levels of the pulse signal; the MPU determines first absolute time according to first reception time when the pulse signal is received, second reception time when the recommended positioning information is received, and the recommended positioning information, and broadcasts the first absolute time to Ethernet network for absolute time synchronization; the MCU determines second absolute time according to time when the pulse signal is received, time when the first absolute time is received, and the recommended positioning information, and broadcasts the second absolute time to a CAN bus for absolute time synchronization.

Abstract: Presented are systems and methods for augmented reality (AR) communication based on data channel. A first wireless communication device may communicate with a wireless communication node to share computer-generated perceptual information via a data channel. A media content can be rendered with the computer-generated perceptual information.

Abstract: Disclosed is a near eye display apparatus, comprising a display screen and an imaging system. The imaging system comprises a biconvex lens, a transflective plane mirror and a transflective curved mirror. The biconvex lens is configured to magnify a display image of the display screen; the transflective plane mirror is configured to receive imaging light from the biconvex lens and reflect same to the transflective curved mirror; and the transflective curved mirror is configured to converge the imaging light and reflect same to the position(s) where human eyes are located.

Abstract: A mesoporous cerium oxide nano-material and a preparation method and an application thereof are provided in the present disclosure, belonging to the technical field of porous materials. The preparation method includes the following steps: using porous organic frameworks material as a templating agent, impregnating and adsorbing cerium salt precursor under an action of alkali, and removing the templating agent by roasting pyrolysis to obtain the mesoporous cerium oxide nano-material. POFs is carbonized into mesoporous carbon materials by calcination in inert atmosphere, which supports the mesoporous channels of cerium oxide, and then the carbonized carbon materials of POFs are removed by calcination in air atmosphere, forming the mesoporous structure of cerium oxide. The mesoporous cerium oxide nano-material prepared by the present disclosure has a high specific surface area and mesoporous structure, and is used as a catalytic material or catalyst carrier.

Abstract: A lightning protection apparatus for a wind generator blade, including a lightning arrester and a lightning arrester base. The lightning arrester includes a connecting portion, a lightning arresting portion, and a positioning portion, wherein the lightning arresting portion is configured to arrest a lightning, an external thread is formed on a surface of the connecting portion and configured to be connected to the lightning arrester base, and the positioning portion is disposed between the connecting portion and the lightning arresting portion, such that after the connecting portion is screwed into a threaded hole, the positioning portion can fit with a recess in the threaded hole in shape. The lightning arrester base is configured to be connected to the lightning arrester and lead out a lightning current received by the lightning arrester during lightning arresting, and includes an insulation layer and at least one the threaded hole.

Abstract: A system may include a memory and a processor in communication with the memory. The processor may be configured to perform operations. The operations may include calculating a priority factor with a node autonomous center in a node and computing a node service capability with the node autonomous center. The operations may further include selecting, with the node autonomous center, a task based on the priority factor and the node service capability. The operations may further include directing the task to the node.

Abstract: A light emitting module includes: a light emitting element array provided on a first substrate, including a plurality of light emitting elements arranged in an array in a row direction and a column direction, each of which includes a first electrode and a second electrode, wherein a driving current of the light emitting element is greater than or equal to 1 mA; and a plurality of row driving chips and a plurality of column driving chips provided on the first substrate. At least one row driving chip and at least one column driving chip are spaced apart in the row direction and the column direction. At least one row driving chip and at least one column driving chip are respectively electrically connected to the first electrodes of at least one row of light emitting elements and the second electrodes of at least one column of light emitting elements.

Abstract: The disclosure includes a terminal device determining first information. The terminal device sends the first information and second information to a network device, where the second information is used to determine at least one of a modulation scheme of the first information or a code rate of the first information. The network device receives the first information and the second information that are sent by the terminal device. The network device decodes the first information based on the second information.