Abstract: This application provides an uninterruptible power supply (UPS), an uninterruptible power supply control method, a related apparatus, and a system. In one example, the UPS determines a target value of a SOC of a battery of the UPS; and controls, based on the determined target value, a rectifier circuit and a direct current-to-direct current circuit in the UPS to charge the battery to make the SOC of the battery equal to the target value, or controls, based on the determined target value, an inverter circuit and a direct current-to-direct current circuit in the UPS to discharge the battery to make the SOC of the battery equal to the target value.

Abstract: The present invention provides a laminated sheet, a cylindrical filter element, and a filtration kit that are used to perform water filtration. Specifically, the laminated sheet used to perform water filtration includes: a pre-filtration layer, the pre-filtration layer including a first fiber having a diameter within a range of 1-5 ?m and a second fiber having a diameter within a range of 200-900 nm, and the pre-filtration layer having a pore diameter within a range of 0.2-1 ?m; and a fine filtration layer, the fine filtration layer having a pore diameter within a range of 0.02-0.5 ?m, wherein the pore diameter of the pre-filtration layer is greater than the pore diameter of the fine filtration layer. The laminated sheet used to perform water filtration and the cylindrical filter element and the filtration kit including the same according to the technical solution of the present invention have an extremely small pressure difference, high filtration efficiency, and a long service life.

Abstract: A system includes a housing, a terminal part, an input end, an output end and a switching device. The terminal part is arranged on the housing and is matched with a battery pack. The input end is electrically connected with the terminal part. The output end is configured to output energy to an outside. The switching device includes a first switching structure and a second switching structure arranged in the housing and electrically connected with the output end. The first/second switching structure may be switched between a first state and a second state to output a first voltage or a second voltage.

Abstract: An axle assembly having a brake drum and inboard and outboard wheels. The brake drum the inboard wheel may cooperate to inhibit movement of the inboard wheel in an inboard direction. An outboard wheel clamp and an outboard split ring may cooperate to inhibit movement of the outboard wheel in an outboard direction.

Abstract: A working method of a modular uninterruptible power supply (UPS) includes: obtaining working parameters of the modular UPS, where the working parameters include an input voltage parameter, a load parameter, and a battery parameter; and adjusting a working mode of a power module in the modular UPS according to at least one of the working parameters of the modular UPS, so that not all power modules are in a same working mode, where the modular UPS includes K working modules, and 2?K.

Abstract: This application provides an uninterruptible power system and a driving method for an uninterruptible power system, and relates to the field of power conversion technologies, to resolve output interruption of the uninterruptible power system. The uninterruptible power system includes a first power input end, a second power input end, a load end, and a bypass, where the bypass includes a first bidirectional switch, and the first bidirectional switch is connected to the first power input end and the load end, and is configured to control connection or disconnection between the first power input end and the load end; and at least one main circuit, where each main circuit includes a bus and an inverter output unit. An input end of the bus is connected to the second power input end, and an output end of the bus is connected to the inverter output unit.

Abstract: A preparation method of a molecularly imprinted polymer (MIP) for separation and concentration of 4-methylsterane compounds is provided. A template molecule, a functional monomer, a porogen, an initiator and a cross-linking agent are mixed and subjected to polymerization to prepare a polymer with the template molecule, which is then treated to remove the template molecule, so as to give the desired MIP. The template molecule is ?-sitosterol or deoxycholic acid. The obtained molecularly imprinted polymer has multiple stable hole structures and binding sites inside, and has memory and recognition functions for the 4-methylsterane compounds, exhibiting excellent specific adsorption performance. The MIP can contribute to the accurate identification of correlation between depositional environment and maturity of crude oils or source rocks. A molecularly imprinted polymer prepared by such method, a chromatographic column and an application thereof are also provided.

Abstract: A charging device includes a housing, a plurality of charging grooves, a handle, a first wheel and a supporting assembly. Wherein, the plurality of the charging grooves is arranged side by side inside the housing for accommodating an inserted battery pack. The handle is for a user to hold and is movably connected with the housing. The first wheel may be rotatably arranged at a bottom of the housing. The supporting assembly is arranged at the bottom of the housing. When the charging device is pulled, the handle is held, and the charging device is inclined and slides relative to a ground by the first wheel. When the charging device is placed horizontally, the first wheel and the supporting assembly are in contact with the ground.

Abstract: An information processing apparatus according to the present disclosure includes a memory, and a hardware processor coupled to the memory. The hardware processor is configured to: determine whether an update process of updating a program or data for providing a function of an in-vehicle device mounted on the vehicle is executable, based on position information of a vehicle, map information, and a prohibition condition indicating a condition for prohibiting execution of the update process; and cause the in-vehicle device to execute the update process when the determining that the update process is executable.

Abstract: The present disclosure provides a method for improving an induction rate of a luffa embryoid by radiation mutagenesis. The present disclosure belongs to the technical field of crop tissue culture and breeding. In the present disclosure, the method includes conducting radiation of pollens, conducting pollination of radiated pollens, conducting disinfection, and conducting cultivation. The method of the present disclosure provides a technical support for luffa haploid breeding and further improves a breeding efficiency.

Abstract: Disclosed in the present invention is a thermoplastic composite solid propellant, which comprises, by mass: 5-16% of a thermoplastic elastomer having a bonding function; 5-25% of a plasticizer; 5-18% of a metal fuel; 50-70% of an oxidizing agent; and 0.4-5% of a functional auxiliary agent. In the thermoplastic composite solid propellant, a thermoplastic elastomer grafted or copolymerized with a bonding functional group is used as an adhesive, and an adhesive matrix and a solid filler have relatively strong interaction, such that an interfacial effect is enhanced, and the phenomenon of “dehumidification” in the tensile failure process can be slowed down. Further disclosed is a method for preparing the thermoplastic composite solid propellant. The method overcomes defects in the prior art, safely and efficiently prepares the thermoplastic composite solid propellant in an acoustic resonance mixing manner, and meets the requirements of a solid engine for rapid charging.

Abstract: An uninterruptible power supply includes a first power input, a second power input, a load end, a bypass, a main circuit, and a controller. The bypass includes a bidirectional switch, and the main circuit includes a rectifier circuit and an inverter circuit. The controller is configured to control a voltage that is output by the inverter circuit to be greater than a voltage that is input to the bypass, so that when currents are input to the bypass and the inverter circuit separately, a current that is output by the inverter circuit is transmitted to the load end. In response to a fault at the load end, the voltage that is output by the inverter circuit suddenly drops below the voltage that is input to the bypass, and a current that is output by the bypass is transmitted to the load end.

Abstract: A data transfer method includes that a first device displays a first interface. The first interface includes image information of a first file. When a distance between a Near-Field Communication (NFC) chip of the first device and an electronic tag of a second device is less than a preset threshold, the first device obtains a BLUETOOTH address of the second device. The electronic tag includes device information of the second device, and the device information includes the BLUETOOTH address or a tag identifier (ID) used to obtain the BLUETOOTH address. The first device exchanges a WI-FI connection parameter with the second device through a BLUETOOTH connection corresponding to the BLUETOOTH address. The first device establishes a WI-FI connection to the second device. After the WI-FI connection is established, the first device automatically transfers the first file to the second device through the WI-FI connection.

Abstract: A target used for heavy water reactor production of C-14 isotopes, which comprises: a target tube, which has a target material and/or an absorber material, the target material being a nitrogen-containing solid material; end plates, which are arranged at two ends of the target tube; a connection rod, which is provided with a connection component that is connected to a positioning mechanism used for positioning the target, wherein the connection rod passes through the target tube along the axial direction of the target tube, and the target tube is fixedly connected to the connection rod by means of the end plates. The present invention can be adapted to be placed at different locations such as at a guide tube, an inspection passage, or a fuel channel to undergo irradiation and produce C-14 isotopes.

Abstract: This application relates to the technical field of automatic vending, and provides a vending machine that includes a control device, a measuring device, a bucket, a bucket driving mechanism configured for driving the bucket into motion, and a storage column configured to store items. The control device controls the measuring device to measure a first distance and a second distance, calculates a difference between the first distance and the second distance, and calculates a number of items in the storage column based on the difference.

Abstract: A flame arrester includes a flame arrester housing that has a fluid channel defined therein and an inlet and an outlet which are communicated with the fluid channel. The fluid channel is internally provided with a flame arresting unit for preventing flame propagation One side of the flame arresting unit is provided with a deformation unit configured to deform when the internal temperature of the fluid channel reaches a preset temperature to reduce the flow area of the fluid channel towards the outlet. The deformation unit is provided on one side of the flame arresting unit, and when continuous combustion is formed at the flame arresting unit, the deformation unit deforms to reduce the flow area of the fluid channel on the surface of the flame arresting unit to increase a gas flow rate to move the flame is away from the surface of the flame arresting unit.

Abstract: A charger and a charging system are provided, where the charger includes: a charger body, and an auxiliary support assembly, mounted on the charger body, where the auxiliary support assembly is configured such that when the charger body is plugged into a socket, the auxiliary support assembly is capable of generating a mutual acting force with the socket or an interface on which the socket is located, and the acting force generated by the socket or the interface on the auxiliary support assembly is capable of counteracting or weakening torque generated by the charger body due to gravity of the charger body or an external force. The auxiliary support assembly is disposed on the charger body, so that the mutual acting force generated between the auxiliary support assembly and the socket or the interface on which the socket is located can be used to fasten the charger.

Abstract: Disclosed is a banknote accumulating device, including a storage chamber and a limiting mechanism arranged above the storage chamber; the storage chamber includes an inlet for inputting banknotes; the limiting mechanism includes a reset member, a driving mechanism and multiple limiting members which can move independently of each other; the reset member is configured to enable each of limiting members to have a tendency to move to a first position; the driving mechanism is configured to selectively drive one of the multiple limiting members to move from a first position to a second position, so that the limiting part of the limiting member reaches in the moving path of the banknotes in the storage chamber; the distances between the positions of the limiting parts of multiple limiting members in the moving path and the inlet are different. Further disclosed are a limiting mechanism and a cash recycling and handling device.

Abstract: A charging device and an application thereof are provided. The charging device includes a housing, defining a receiving cavity; a circuit board, arranged in the receiving cavity; an input part, provided on the housing and configured for connection to an external power supply; and a plurality of output parts, provided on the housing, the input part and the output part being electrically connected via the circuit board. Each of the output parts includes at least one terminal, and the terminal is arranged in the receiving cavity and passes through the housing to a surface of the housing. The charging device can be applied to charge a wide range of electronic devices.

Abstract: The disclosure provides a battery pack, a power tool system and a charging system. The battery pack includes a battery pack housing in which a battery cell assembly and a circuit board are mounted. The circuit board is electrically connected with the battery cell assembly. A plurality of Type-C connectors are arranged on the circuit board and electrically connected to the circuit board to realize an electrical connection between the battery cell assembly and the Type-C connectors, and are configured to connect external devices.