Abstract: The embodiments of the present disclosure provide a cell culture composition and a use thereof, and the cell culture composition includes a culture medium and mitochondria. The cell culture composition including mitochondria can promote cell growth and improve the function of the damaged or aged stem cells, thereby improving overall cell growth.

Abstract: A parallel charging-discharging management system of multiple batteries comprises a main control module, a charging dual-MOS control module, a discharging dual-MOS control module, a communication module, a voltage sampling module, a current sampling module, a temperature sampling module, an electric quantity display module and batteries; the main control module is connected with a charging dual-MOS control module, a discharging dual-MOS control module, a communication module, a voltage sampling module, a current sampling module, a temperature sampling module and an electric quantity display module; the charging dual-MOS control module is connected with a power supply, batteries and a main control module, the discharging dual-MOS control module is connected with the batteries; the main control module and the load, the current sampling module is connected with the batteries and the main control module; the temperature sampling module is connected with the main control module; it prevents battery discharging and

Abstract: A mounting bracket and motor including same have mounting bracket arranged on side of the motor's casing away from front end cover, and includes bracket body. A bearing mounting portion for mounting motor's bearing is on bracket body's side close to casing; and protective cover and at least one of protective cover mounting portion and encoder bracket mounting portion on bracket body's side away from casing. Protective cover mounting portion is configured to fixedly connect bracket body and protective cover. Accommodation space for accommodating encoder is defined between bracket body and protective cover; or encoder bracket mounting portion includes first encoder bracket mounting portion, and first encoder bracket mounting portion is fixedly connected to protective cover by encoder bracket.

Abstract: Embodiments of the present disclosure are directed to a flexible flat cable. Two insulating material layers are sandwiched with a plurality of conductors therebetween by two adhesive layers, and a metal shielding layer is attached to an outer side of the two insulating material layers by a laminated adhesive layer. The conductors are bare conductors, and the laminated adhesive layer is a laminated adhesive layer with bubbles. The flexible flat cable is small in size, which not only meets the requirements of characteristic impedance and insertion loss in industry, but also significantly reduces the cost compared with the conventional flexible flat cable made of traditional electronic round wires.

Abstract: This application discloses a chip package assembly, an electronic device, and a preparation method of a chip package assembly. The chip package assembly includes a package substrate, a chip, and a heat dissipation part. The package substrate includes an upper conductive layer, a lower conductive layer, and a conductive part connected between the upper conductive layer and the lower conductive layer. The chip includes a front electrode and a back electrode that are disposed opposite each other, the chip is embedded in the package substrate, the conductive part surrounds the chip, the front electrode is connected to the lower conductive layer, and the back electrode is connected to the upper conductive layer. The heat dissipation part is connected to a surface of the upper conductive layer that is away from the chip. The upper conductive layer, the lower conductive layer, and the conductive part each conduct heat.

Abstract: A gradient doped cobalt-free positive electrode material and a preparation method therefor, a lithium-ion battery positive electrode, and a lithium battery. The positive electrode material consists of LiNixMnyAzO2. The content of element A in the positive electrode material decreases in a direction from a surface layer of the positive electrode material to the center, and A is one or more of Al, Zr, Ti, B, and W. The preparation method is easy to implement, simplifies roasting condition requirements, and provides a cobalt-free positive electrode material having good cycle performance.

Abstract: A positioning method and apparatus, a WLAN device, and a storage medium are disclosed, and relates to the field of positioning technologies. The positioning method includes: a WLAN device obtains an uplink scheduling parameter sent by another WLAN device to a plurality of to-be-positioned WLAN devices, where the uplink scheduling parameter is used to indicate radio resources allocated to the plurality of to-be-positioned WLAN devices; the WLAN device receives uplink signals; and the WLAN device measures respective positioning data of the plurality of to-be-positioned WLAN devices based on the radio resources of the plurality of to-be-positioned WLAN devices and the received uplink signals. The embodiments can improve positioning timeliness of the to-be-positioned WLAN devices.

Abstract: This application provides a base station switching method and an apparatus. The method includes: A terminal sends one piece of binding signaling that carries SIM card binding information to a source base station; the terminal switches a plurality of SIM cards from being connected to the source base station to being connected to the target base station; and the terminal sends radio resource control reconfiguration complete information to the target base station, where the radio resource control reconfiguration complete information includes information about the plurality of SIM cards that complete the switching operation.

Abstract: This application relates to the field of communication technologies, and provides a communication method and apparatus, to determine a measurement periodicity in which a communication device performs layer 1 signal to interference plus noise ratio (L1-SINR) beam measurement based on a channel measurement resource (CMR) and an interference measurement resource (IMR). The method includes: A communication device receives a CMR and an IMR corresponding to the CMR. A terminal measures an L1-SINR of a receive beam based on the CMR and the IMR, to determine an optimal receive beam of the terminal. The CMR and the IMR are channel state information reference signal (CSI-RS) resources in different CSI-RS resource sets. The communication device determines a value of a first parameter based on repetition corresponding to a CSI-RS resource set corresponding to the CMR, and determines, based on the value of the first parameter, a measurement periodicity for measuring the L1-SINR.

Abstract: An automobile hub fixture includes a fixture body and a positioning apparatus. The fixture body includes a fixed platform and a plurality of clamping claws arranged at intervals in a circumferential direction of the fixed platform. The clamping claws are configured to clamp an outer rim of a hub. The plurality of clamping claws are connected to a driving member by using a linkage, and the driving member drives the clamping claws to radially move along the fixed platform. The positioning apparatus includes a movable platform slidably connected to the clamping claws. A positioning module configured to position an inner rim or the outer rim of the hub is mounted to the movable platform. The machining device includes a fixture, a machine tool, and a minimal quantity lubrication apparatus. The production line includes a machining device, a loading system, a loading and unloading manipulator, and a catching table.

Abstract: A video based maintenance method, a maintenance terminal, a server, a system, and a storage medium. The method includes: receiving, by a maintenance terminal, a maintenance order sent by a server, wherein the maintenance order is generated according to a maintenance request sent by a client, and the maintenance order comprises customer information, faulty product information and fault information; and wherein the fault information comprises one or more troubleshooting points; receiving, by the maintenance terminal, a video stream sent by the client; and recording, by the maintenance terminal, troubleshooting information of the troubleshooting points, and sending the troubleshooting information to the server.

Abstract: Provided in the present disclosure are a positive electrode material used for a lithium ion battery. The positive electrode material comprises substrate particles, a first cladding layer that covers the substrate particles, and a second cladding layer that covers the first cladding layer; the substrate particles contain LiNixMny CozM1-x-y-zO2; the first cladding layer contains lithium cobalt oxide; and the second cladding layer contains an oxide of a transition metal.

Abstract: Embodiments of this application provide a communication method, apparatus, and system, and a storage medium. The method includes: sending first indication information, where the first indication information is used to configure a candidate spatial parameter information set of a first uplink channel; and sending second indication information, where the second indication information indicates at least one piece of first spatial parameter information in the candidate spatial parameter information set, the at least one piece of first spatial parameter information is used to transmit a second uplink channel and/or an uplink signal, and the first uplink channel and the second uplink channel are of different types.

Abstract: Embodiments of this application provide a multicast/broadcast service communication method and an apparatus, and relate to the communication field, to reduce network resource overheads. The method is as follows: A terminal device determines a first multicast/broadcast service, where the first multicast/broadcast service is a multicast/broadcast service that the terminal device is to leave. The terminal device sends a first message, where the first message carries identification information of the first multicast/broadcast service. Embodiments of this application are applied to a mobile communication system such as 5G.

Abstract: A detection method and an apparatus, applied to the field of communication technologies. The method includes: a terminal-side device performs detection on a plurality of monitoring occasions before a start time of DRX on duration; if the terminal-side device detects first indication information from a network-side device, determining a first time period based on an Nth monitoring occasion in the plurality of monitoring occasions before the start time of the DRX on duration, and performing BWP switching in the first time period. The first indication information indicates the terminal-side device to perform BWP switching. N is an integer greater than 0.

Abstract: Disclosed is a method and device for dynamically adding a consensus node in a blockchain. The method comprises: receiving a registration request, initiated by a new participant, for registration as a new consensus node in a consensus network, wherein the registration request is used for initiating a registration to the consensus network; generating, according to the registration request, a network update block in which topological information of a new consensus network is written, wherein the new consensus network comprises consensus nodes in the consensus network and the new consensus node; and synchronizing block information in the consensus network and the network update block to the participant and the consensus nodes so as to obtain the new consensus network.

Abstract: An image processing method includes: acquiring a fixation point position on a respective screen viewed by each of dominant eye(s); determining a fixation area of a left-eye screen and a fixation area of a right-eye screen according to fixation point position(s) corresponding to the dominant eye(s); rendering a first part of a left-eye image to be displayed on the left-eye screen at a first resolution, and rendering a second part of the left-eye image at a second resolution; rendering a first part of a right-eye image to be displayed on the right-eye screen at a third resolution, and rendering a second part of the right-eye image at a fourth resolution. A resolution of an image to be displayed in a fixation area of the respective screen is greater than resolutions of images to be displayed in other areas of the left-eye screen and the right-eye screen.

Abstract: An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. At least one lens among the first to the sixth lenses has positive refractive force. The seventh lens can have negative refractive force. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

Abstract: A busway connector is provided including a base, a drive member, a connection component, and a locking member. The locking member is disposed through the base and fastened to the drive member, and the locking member fits with the base to drive the drive member to move in a first direction. The connection component includes a connection block and connection units connected in series in a row, each connection unit includes a first insulation sheet, a first conductive sheet fastened to the first insulation sheet, a second insulation sheet, and a second conductive sheet fastened to the second insulation sheet. A slot is formed between the first conductive sheet and the second conductive sheet, the first insulation sheet is elastically connected to the second insulation sheet by using an elastic member, and the connection block is slidably connected to the base.

Abstract: A service implementation method, apparatus, and system are disclosed. The service implementation method includes: receiving, by a serving gateway, a data packet of a terminal device sent by a packet data network gateway; if the data packet is a data packet with a serving priority and the serving gateway has sent a paging trigger message with a serving priority to a mobility management element, skipping, by the serving gateway, sending a paging trigger message to the mobility management element; or if the data packet is a data packet with a serving priority and the serving gateway has sent no paging trigger message with a serving priority to a mobility management element, sending, by the serving gateway, a paging trigger message to the mobility management element; wherein the paging trigger message is used to enable the mobility management element to page the terminal device.