Abstract: A positioning device including a support tab, two pairs of sliding blocks slidably mounted in the support table, a positioning plate extending vertically from on a top of each sliding block, a base on which the support table is supported, a cylinder installed in a chamber of the base, a ball received in the cylinder, a piston rod slidably mounted in the cylinder that pushes the ball to move upward in a vertical direction, so that the ball drives the two pairs of sliding blocks to move away from each other in the first horizontal direction and the second horizontal direction, respectively, until the positioning plates of the two pairs of sliding blocks abut against four inner walls of the opening of the circuit board, respectively, to allow the electronic device to be received in a positioning slot defined by the positioning plates, and a release mechanism.

Abstract: A device for pyrolysis reactions includes a feeding pump, a flow meter, an atomizer, a pyrolysis reactor, electromagnetic coils, an electromagnetic induction heating power, a temperature sensor, a temperature controller, a condenser and a product tank. The feeding pump is connected with the flow meter which is connected to the inlet of the atomizer in the pyrolysis reactor. There is a port at the bottom of the pyrolysis reactor, with the port at the top of the pyrolysis reactor connected with the condenser. The condenser is connected with the product tank. The external wall of the pyrolysis reactor is surrounded by electromagnetic coils which are connected with the electromagnetic induction heating power. The temperature sensor is placed between the pyrolysis reactor and the coils, which is connected with the temperature controller. The contact resistance between the atomized material and the hot surface can be.

Abstract: The present disclosure provides a data consistency verification method, and data uploading and downloading device. According to some embodiments, a server receives N segment data of a first data sent by a terminal, the N segment data being obtained by the terminal segment the first data according to a segment specification, and N?2; the server determines an encryption policy corresponding to the first data; the server performs calculation on the N segment data of the first data according to the encryption policy to obtain a total verification value; the server stores associatively the first data formed by combining the N segment data, the segment specification, the encryption policy, and the total verification value; the server sends the first data, the segment specification, the encryption policy, and the total verification value in response to receiving a downloading request for the first data.

Abstract: A wire processing apparatus comprises a frame, a clamping device mounted on the frame and adapted to clamp a wire to be processed, and a straightening and cutting device mounted on the frame. The straightening and cutting device is adapted to press a conductor of the wire into a straight shape and cut the conductor to a predetermined length after pressing.

Abstract: A motor-driven single-seed-ejection sowing device includes a housing, a seed metering roller, a seed brush, a seed metering mechanism and a power mechanism. The housing includes a power compartment and a seed compartment. The surface of the seed metering roller is provided with seed grooves having spaces for accommodating a single seed. The seed metering mechanism includes a spring, a striking tube, a piston and the piston tube. The piston and the piston tube are arranged for axial movement inside the striking tube. The power mechanism includes a control unit and a drive unit. The control unit includes the motor, the drive panel, the Hall sensor and the magnet. The magnet is set on the striking tube. The Hall sensor and the drive panel are connected to the motor, and the motor drives the seed metering roller and seed metering mechanism by the drive unit.

Abstract: A motor-driven single-seed-ejection sowing device includes a housing, a seed metering roller, a seed brush, a seed metering mechanism and a power mechanism. The housing includes a power compartment and a seed compartment. The surface of the seed metering roller includes seed grooves having spaces for accommodating a single seed. The seed metering mechanism includes a spring, a striking tube, a piston and the piston tube. The piston and the piston tube are arranged for axial movement inside the striking tube. The power mechanism includes a control unit and a drive unit. The control unit includes the motor, the drive panel, the Hall sensor and the magnet. The magnet is set on the striking tube. The Hall sensor and the drive panel are connected to the motor, and the motor drives the seed metering roller and seed metering mechanism by the drive unit.

Abstract: The present disclosure provides a method for tracking a method-call-chain. The method includes: setting a configuration item for whether to perform a method-call-chain tracking on a current application; intercepting before a method is called, and determining whether call chain information of the method needs to be outputted based on the configuration item; and when it is determined that the call chain information needs to be outputted, recording the call chain information of the method before executing a call request for the method, and outputting the recorded call chain information after the call request for the method is completed. The present disclosure further provides an electronic device and a computer readable storage medium. The method-call-chain tracking method, the electronic device, and the computer readable storage medium provided in the present disclosure allow the tracking of the method-call-chain without rewriting the codes by setting the configuration item and introducing a Spring-AOP.

Abstract: A method of allocating virtual objects based on augmented reality (AR) includes displaying, by an AR client terminal of a receiving user, a live map associated with a location of the receiving user. The live map includes a target location to which a virtual object was bound by a distributing user. The AR client terminal of the receiving user scans an image of an environment of the target location. In response to determining that the scanned image includes a preset bound target, the AR client terminal of the receiving user receives information of the virtual object from a server terminal. The preset bound target is associated with the virtual object and the target location.

Abstract: Provided is a compound of formula I or a pharmaceutically acceptable salt, enantiomer, diastereomer, tautomer, solvate, isotopic substituent, polymorph, prodrug, or metabolite thereof. Also provided is a method for preparing the compound of formula I. The compound of formula I has higher inhibitory activity against SHP2, and thus can be used to prevent or treat a disease related to SHP2.

Abstract: A MEMS accelerometer, including: a substrate, a movable component and a fixed electrode group, wherein a surface of the substrate has an anchoring region; the movable component is connected to the anchoring region through a supporting beam and suspended above the substrate, and the movable component includes a first proof mass and a second proof mass; the first proof mass has a first hollowed-out region in the middle, the first hollowed-out region is I-shaped, and the second proof mass is located in the first hollowed-out region; and the fixed electrode group includes a first electrode group, which is fixed on the surface of the substrate, located between the substrate and the movable component, and forms a Z-axis detection capacitor bank with the first proof mass and the second proof mass.

Abstract: An automatic fiber stripping system comprises a first stripping module, a second stripping module, and a heating device. The first stripping module and the second stripping module each have a stripping belt, a driven belt wheel, a driving belt wheel, and a stripping tool including a pressing portion. The stripping belts are tightened on the pressing portions and the stripping tools press the stripping belts on each of two opposite sides of an optical cable. A blade portion of one of the stripping tools cuts a notch in at least one of two side edges of an outer coating layer of the optical cable. The heating device heats and softens the outer coating layer of the optical cable. The stripping belts are driven to move relative to the optical cable by the driving belt wheels so as to strip off a segment of the outer coating layer from the notch.

Abstract: A fixing apparatus comprises a first fixing device and a second fixing device. The first fixing device has at least one first positioning groove adapted to position at least one first elongated member and fixes the at least one first elongated member. The second fixing device has at least one second positioning groove adapted to position at least one second elongated member and fixes the at least one second elongated member. Each first positioning groove is aligned with a corresponding second positioning groove so that the first elongated member fixed in the first positioning groove is axially aligned with the second elongated member fixed in the corresponding second positioning groove.

Abstract: A method of allocating virtual objects based on augmented reality (AR) includes displaying, by an AR client terminal of a receiving user, a live map associated with a location of the receiving user. The live map includes a target location to which a virtual object was bound by a distributing user. The AR client terminal of the receiving user scans an image of an environment of the target location. In response to determining that the scanned image includes a preset bound target, the AR client terminal of the receiving user receives information of the virtual object from a server terminal. The preset bound target is associated with the virtual object and the target location.

Abstract: Provided is a compound of formula I or a pharmaceutically acceptable salt, enantiomer, diastereomer, tautomer, solvate, isotopic substituent, polymorph, prodrug, or metabolite thereof. Also provided is a method for preparing the compound of formula I. The compound of formula I has higher inhibitory activity against SHP2, and thus can be used to prevent or treat a disease related to SHP2.

Abstract: A welding system for welding a first elongated element and a second elongated element together by a laser beam that is emitted from a laser welding head after the ideal welding center point of the aligned first and second elongated elements has been positioned at a focal point of the laser beam that is emitted from the laser welding head.

Abstract: An object of this disclosure is to provide a technology for providing 3D reading scenarios. The technology includes: acquiring, in a VR reading mode, corresponding 3D scenario information based on a literature work currently read by a user; and establishing, in cooperation with VR glasses, a 3D reading scenario for the literature work based on the 3D scenario information. Compared with the existing technologies, this disclosure can acquire the corresponding 3D scenario information based on the literature work, and establish the 3D reading scenario for the literature work using the 3D scenario information. Moreover, this disclosure in cooperation with VR glasses further realizes an immersed reading experience by reading literature works in a 3D scenario. This not only improves the monotone disadvantage of the traditional reading scenario, but also brings users into an immersed reading environment in the reading process, and greatly enhances the users' reading experience.

Abstract: A tunnel boring robot includes a tunnel boring machine, a sensing unit, an intelligent decision unit, and a controller unit. The sensing unit, the intelligent decision unit and the controller unit are disposed at the tunnel boring machine. The sensing unit is configured to sense, in real time, boring operation data of a current cycle during which the tunnel boring machine is working according to set boring parameter information. The intelligent decision unit is configured to receive the boring operation data sent by the sensing unit, and generate the set boring parameter information for a next cycle according to a preset prediction algorithm, the boring operation data and a desired boring effect. The controller unit is configured to receive the set boring parameter information, and control the tunnel boring machine to perform a boring operation for the next cycle according to the set boring parameter information.

Abstract: Computer-implemented methods, non-transitory, computer-readable media, and computer-implemented systems for augmented, reality-based, virtual object allocation. One computer-implemented method includes performing face recognition on a scanned image, comprising performing image scanning of a user using a client device to generate the scanned image. An electronic certificate used to obtain virtual objects and sent by a server is received at the client device when one or more facial features are recognized from the scanned image. The electronic certificate is locally stored as a locally stored electronic certificate. Whether a number of types of locally stored electronic certificates reaches a predetermined threshold is determined.

Abstract: A process for flocculating filler particles in water is provided. The process comprises adding a flocculant to a mixture comprising filler particles and water, wherein the flocculant has a reduced specific viscosity (“RSV”) of from about 5 dL/g to about 16 dL/g, a viscosity average molecular weight of from about 1,200,000 to about 7,500,000, and a cationic charge of from about 5 mol % to about 50 mol %. Flocs formed by flocculation of the filler particles and the flocculant have a median particle size of from about 10 ?m to about 150 ?m. The filler is not precipitated calcium carbonate alone. The flocs provided by the process are useful in increasing ash content of a paper product.

Abstract: A method of allocating virtual objects based on augmented reality (AR) includes displaying, by an AR client terminal of a receiving user, a live map associated with a location of the receiving user. The live map includes a target location to which a virtual object was bound by a distributing user. The AR client terminal of the receiving user scans an image of an environment of the target location. In response to determining that the scanned image includes a preset bound target, the AR client terminal of the receiving user receives information of the virtual object from a server terminal. The preset bound target is associated with the virtual object and the target location.