Abstract: The present invention relates to a pyrimidine derivative, a method for preparing same and use thereof in medicine. In particular, the present invention relates to a pyrimidine derivative represented by general formula (I), a method for preparing same and a pharmaceutically acceptable salt thereof as well as use thereof as a therapeutic agent, in particular as a FGFR4 kinase inhibitor, definitions of each substituent in the general formula (I) being the same as those defined in the description.

Abstract: A vapor generation device includes a housing. The housing includes a near end and a far end opposite to each other in a length direction, the near end being provided with a first opening, and the far end being provided with a second opening. The housing is internally provided with: a cavity, located between the first opening and the second opening; and a heater, extending in an axial direction of the cavity and surrounding at least a part of the cavity, and configured to heat an inhalable material received in the cavity, at least a part of the heater close to the far end including an inner diameter-reduced region, to provide a stop for the inhalable material received in the cavity during use. In the foregoing vapor generation device, an inner diameter-reduced part of the heater abuts against the inhalable material to provide support.

Abstract: An electronic vaporization device includes a shell; a vaporizer, including a liquid storage unit configured to store a liquid, and a vaporization core configured to heat the liquid to generate an aerosol; a battery; a circuit board, including a first electrical contact portion and a second electrical contact portion; a first conductive connector, where an end of the first conductive connector abuts against the vaporization core to form an electrical connection, and the other end of the first conductive connector abuts against the first electrical contact portion to form an electrical connection; and a second conductive connector, spaced apart from the first conductive connector, where an end of the second conductive connector abuts against the vaporization core to form an electrical connection, and the other end of the second conductive connector abuts against the second electrical contact portion to form an electrical connection.

Abstract: A robot for transporting cargo boxes includes a drive unit, a cargo box storing unit and a cargo box delivery unit. The drive unit carries the cargo box storing unit and the cargo box delivery unit and moves them jointly therewith. The cargo box storing unit includes a plurality of cargo box storing spaces. The cargo box delivery unit is coupled to the cargo box storing unit and configured to move along the cargo box storing unit in a vertical direction and transfer the cargo boxes between the cargo box storing spaces and a shelf.

Abstract: A polycrystalline diamond compact including a polycrystalline diamond layer and a cemented carbide substrate. The polycrystalline diamond layer is in the form of a cylinder including an upper surface, a bottom surface, and a side wall connecting the upper surface and the bottom surface. The cemented carbide substrate is bonded to the bottom surface of the polycrystalline diamond layer. The upper surface includes a center part and an edge part. The edge part includes a plurality of radially distributed cutting edges and cutting removal grooves. The plurality of cutting edges and cutting removal grooves are alternately distributed on the upper surface. One end of each of the plurality of cutting edges and cutting removal grooves extends to communicate with the center part, and the other end of each of the plurality of cutting edges and cutting removal grooves extends to communicate with the side wall.

Abstract: Provided are a linear driver for electric furniture and electric furniture. The linear driver for electric furniture includes a housing, a worm with one end extending into the housing, a worm wheel disposed in the housing and meshing with the worm, and a lead screw. The lead screw penetrates through the worm wheel and is in threaded connection with the worm wheel. At least one end of the lead screw extends out of the housing. At least one end of the worm wheel is provided with a guide structure. The guide structure is sleeved around the lead screw and is in clearance fit with the lead screw. The guide structure is fixed relative to the worm wheel or the housing.

Abstract: A magnetic dielectric resin composition, and a prepreg and a copper clad laminate comprising same. The magnetic dielectric resin composition comprises a resin and a magnetic filler. The absolute value of the temperature drift coefficient of the magnetic filler under the conditions of ?55° C. to 150° C. is 0-1000 ppm/° C. Preparation raw materials of the magnetic filler comprise a combination of iron oxide and a metal oxide. By means of mutual synergy of the resin and the specific magnetic filler, and on the premise of ensuring good dielectric properties, the magnetic dielectric resin composition has a high magnetic permeability, a low magnetic loss, and a proper cut-off frequency, and can also reduce a temperature drift coefficient and improve stability.

Abstract: A Bluetooth network establishing system and method are provided. The system includes a plurality of node devices and a gateway device. The gateway device is used to connect a Bluetooth network to an external network and broadcast a first connectable undirected advertising packet. A first node device among the node devices executes a first scan operation to receive a first advertising packet, wherein the first advertising packet includes the first connectable undirected advertising packet. The first node device determines whether to establish a first communication connection with the gateway devices to join the Bluetooth network according to the first advertising packet. After joining the Bluetooth network, the first node device broadcasts a second connectable undirected advertising packet.

Abstract: A Bluetooth internet protocol packet transmitting device and method are provided. The device includes a Bluetooth protocol stack, a Bluetooth controller and a host control interface. The Bluetooth protocol stack is configured to store an internet protocol stack and a host control interface driver. The Bluetooth controller generates at least one data packet based on an internet protocol packet, wherein the at least one data packet corresponds to an asynchronous connection data format. The Bluetooth controller transmits the at least one data packet to the host control interface driver. The host control interface driver determines whether the at least one data packet is an asynchronous connection data packet. When the host control interface driver determines that the at least one data packet is the asynchronous connection data packet, the at least one data packet is transmitted to the internet protocol stack.

Abstract: A Bluetooth network establishing system and method are provided. The system includes a plurality of node devices and a gateway device. The gateway device is used to connect a Bluetooth network to an external network. A first node device of the node devices broadcasts a first inquiry operation. In response to the first inquiry operation, the gateway device in a first inquiry scan state sends a first extended inquiry response and executes a first page scan state. The first node device executes a first page operation, wherein the first page operation determines whether to establish a first communication connection with the gateway device to join the Bluetooth network according to the first extended inquiry response. After the first node device joins the Bluetooth network, the first node device executes a second inquiry scan state.

Abstract: A method and apparatus used for extracting a feature point of an environmental target, which relate to the field of vehicles. The method comprises: acquiring the position of each corner point of an environmental target; and determining a feature point of the environmental target according to the position of each corner point of the environmental target. Thus, the problem wherein target identification is not precise may be solved, which is particularly suitable for the identification of a large target.

Abstract: A data processing method and device based on a positive pressure ventilation therapy machine is described. The method comprises: acquiring a current operating parameter and a current pressure value of a draught fan in the positive pressure ventilation therapy machine; finding a target relational expression corresponding to the current pressure value in a preset list according to the current pressure value, wherein the preset list comprises a plurality of pressure values and relational expressions corresponding to the plurality of pressure values, and each of the relational expressions corresponding to the plurality of pressure values is a relational expression between operating parameters of the draught fan and a gas flow output by the positive pressure ventilation therapy machine; and determining a current gas flow output by the positive pressure ventilation therapy machine according to the current operating parameter and the target relational expression.

Abstract: The present invention discloses a dynamic strain field measuring method and system for a rotor blade based on blade tip timing. The method includes the following steps: establishing a three-dimensional finite element model of a to-be-measured rotor blade, and extracting modal parameters of the three-dimensional finite element model; determining the number and circumferential mounting positions of blade tip timing sensors; establishing a mapping relationship between single-point displacement and full-field dynamic strains of the blade; acquiring blade tip single-point displacement of the rotor blade based on the blade tip timing sensors; and realizing, by the single-point displacement, dynamic strain measurement in any position and direction of the rotor blade based on the mapping relationship.

Abstract: A battery swap device includes a movable base configured to carry a battery that is provided with a connector configured to transfer electric energy, and a protective apparatus provided on the movable base, configured to protect the connector, and including a drive mechanism and a covering member. The drive mechanism is configured to drive the covering member to move to cover or uncover the connector.

Abstract: Provided are a method for reprogramming a cell in the presence of one or more reprogramming factors, a reprogrammed cell obtained by using the method and use thereof, and a kit comprising the reprogramming factors.

Abstract: A polycrystalline element includes a table formed of polycrystalline diamond. The table includes a first surface; a second surface spaced apart from the first surface; and at least one side extending between the first surface and the second surface. The table also includes a plurality of extensions also formed of polycrystalline diamond, wherein at least one extension of the plurality of extensions extends away from at least one of the first surface and the at least one side. A radial line extends radially outward from a center axis of the first surface intersects each of a long axis of a subset of a plurality of extensions. Optionally, the polycrystalline diamond of at least one extension of the plurality of extensions is contiguous with the polycrystalline diamond of the table. The polycrystalline element may be used in downhole tools for boring and well drilling, machine tools, and bearings.

Abstract: A polycrystalline element includes a table formed of polycrystalline diamond. The table includes a first surface; a second surface spaced apart from the first surface; and at least one side extending between the first surface and the second surface. The table also includes a plurality of extensions also formed of polycrystalline diamond, wherein at least one extension of the plurality of extensions extends away from at least one of the first surface and the at least one side. The at least one extension of the plurality of extensions includes a first portion that is polyhedral shaped. Optionally, the polycrystalline diamond of at least one extension of the plurality of extensions is contiguous with the polycrystalline diamond of the table. The polycrystalline element may be used in downhole tools for boring and well drilling, machine tools, and bearings.

Abstract: A showerhead with a water passage switching structure is provided according to the present application. The showerhead includes a seat body, a water outlet body assembly, a water distribution valve and a knob. The water distribution valve is provided with at least one water distribution hole, and a water inlet end face of the water outlet body assembly is provided with several water-passing openings in a circumferential track with respect to the at least one water distribution hole, the water distribution valve is driven by the knob to rotate by 360°, thus, the water distribution valve, when rotating, can switch the at least one water distribution hole to be in communication between the water-passing openings.

Abstract: The present invention discloses a circulating multidimensional liquid chromatography and application thereof. The liquid chromatography comprises an infusion device, a sampling device, a collecting-resampling device, a chromatographic column switching device and a detecting device which are connected sequentially, wherein the collecting-resampling device comprises a collecting valve and a sample ring, and the collecting valve is connected with the sample ring; the sampling device is successively connected with the collecting valve and the chromatographic column switching device; the detecting device is also connected with the collecting valve; and the collecting valve is a three-slot three-position multi-way valve.