Abstract: Provided is a method for enhanced separation of metals from a high-tin-content tin tailing and preparation of a high-quality iron powder. The method includes: thoroughly mixing the high-tin-content tin tailing with a first reducing agent to produce a pellet; drying the pellet, and mixing a dried pellet with a second reducing agent; heating to 950 °C to 1,100 °C, and conducting heat preservation for 20 min to 150 min to produce a flue gas and a roasting residue; cooling the flue gas to produce a flue dust including tin, arsenic, lead, and zinc; and subjecting the roasting residue to water cooling, grinding, and then magnetic separation to produce the high-quality iron powder. In this application, volatilization rates of tin, arsenic, lead, and zinc all exceed 90%, an iron grade is greater than 98%, and an iron recovery rate exceeds 75%.

Abstract: A package structure and a manufacturing method are provided. The package structure includes a substrate a chip stacked structure on an upper surface of the substrate. The chip stacked structure includes sub-stacked units stacked in sequence along a first direction parallel to the upper surface of the substrate. Each of the sub-stacked units includes a sub-stacked body and a flexible interposer. The sub-stacked body includes first semiconductor chips stacked in sequence along the first direction. Adjacent first semiconductor chips are electrically connected. The sub-stacked body includes a first surface, a second surface, and a third surface. The second surface is perpendicular to the upper surface of the substrate, the third surface is parallel to the upper surface of the substrate, the first surface and the second surface of the sub-stacked body each include discrete external terminals electrically connect to the flexible interposer.

Abstract: A side brush module for a cleaning device includes a fixed arm mounted within a mobile platform of the cleaning device, a swing arm with one end rotatably connected to the fixed arm and another end mounted with a rotatable cleaning member, a positioning assembly disposed between the fixed arm and the swing arm, and a power assembly connected to the fixed arm, where the power assembly is configured to be capable of driving the swing arm to swing under a positioning of the positioning assembly, thereby driving the cleaning member to move between a retracted position and an extended position.

Abstract: For the positive electrode material of composite sodium ferric sulfate, particles of the positive electrode material include a sodium ferric sulfate matrix, a three-dimensional conductive network embedded into the sodium ferric sulfate matrix and a conductive coating layer coated outside the sodium ferric sulfate matrix; and the three-dimensional conductive network and the conductive coating layer are both formed from PEDOT. The preparation method includes: mixing PSS, EDOT, sodium sulfate, ferrous sulfate and an oxidant as an initiator in an aqueous solution and making the same fully react to render a precursor solution; drying the precursor solution; and then carrying out heat treatment to render the positive electrode material of composite sodium ferric sulfate. The positive electrode is prepared by the above positive electrode material.

Abstract: A package structure and a method for forming the same are provided. The method includes: providing a chip stacked structure of first semiconductor chips, where a first side surface exposes side solder pads having non-coplanar defects. A second side surface is mounted to a carrier board so the first side surface faces away from the carrier board. A cladding layer is formed over the chip stacked structure. A planarization process removes a portion of the cladding layer, the first side surface, and the side solder pads. Solder bumps are then formed in electrical connection to the side solder pads. After removing the carrier board, the chip stacked structure is mounted to a substrate via the solder bumps, which are soldered to corresponding first solder pads on a surface of the substrate.

Abstract: The present disclosure relates to a pyrazolo[3,4-d]pyrimidine compound, a preparation method thereof, and use thereof in the preparation of an anti-tumor drug. This class of compound has an inhibitory effect on FGFR1-3 and exhibits an anti-proliferation effect on NCI-H1581 and SNU-16 cancer cell lines.

Abstract: Provided are a series of antihistaminic compounds of Formula I, pharmaceutically acceptable salts thereof, and a preparation method thereof, the use of the antihistaminic compounds of Formula I and the pharmaceutically acceptable salts in treating diseases such as seasonal and perennial allergic rhinitis, allergic conjunctivitis, and urticaria.

Abstract: The present disclosure relates to a series of antihistaminic compounds, a preparation method and use thereof. Specifically, the present disclosure relates to a series of antihistaminic compounds of Formula I and pharmaceutically acceptable salts thereof, preparation method thereof, and to the use of the antihistaminic compounds of Formula I and the pharmaceutically acceptable salts in treating diseases such as seasonal and perennial allergic rhinitis, allergic conjunctivitis, and urticaria.

Abstract: Embodiments of the present disclosure provide a solution for image encoding learning and application. A method for image encoding learning comprises: extracting an image feature representation of a sample image using an image encoder to be trained; extracting a text feature representation of a sample text sequence using a text encoder, the sample text sequency being associated with the sample image; generating, using the text encoder, a predicted text sequence based on the text feature representation and the image feature representation; and training the image encoder at least based on a text error between the predicted text sequence and the sample text sequence.

Abstract: A flexible interface (130) may operably couple a head portion (110, 210) and a shaft (120, 220) of a hand tool (100, 200). The flexible interface may include a retention assembly (160) and a locking assembly (150) including an actuator (152, 250, 250?) defining a locked state and an unlocked state for the hand tool. In the unlocked state, an angle of the head portion may be pivotable relative to a pivot axis (225) substantially perpendicular to a direction of extension of the shaft and, in the locked state, the angle of the head portion is fixed. The actuator may be configured to move in a direction substantially perpendicular to the pivot axis to operate the locking assembly to transition between the locked state and the unlocked state, and configured to move in a direction substantially parallel to the pivot axis to operate the retention assembly to retain hand tool in the unlocked state. A hand tool comprising said flexible interface is also related.

Abstract: Disclosed is an arbitrarily tailorable electrochromic device and use thereof, wherein the electrochromic device includes in order of a first transparent flexible substrate, a first transparent electron-conductive layer, an electrochromic layer, an electrolyte solution with automatically curable in presence of air and/or moisture to achieve a self-encapsulation function, an ion storage layer, a second transparent electron-conductive layer and a second transparent flexible substrate. The electrochromic device of the present disclosure is arbitrarily tailorable and can be used in various applications.

Abstract: A method for characterizing an effective dielectric constant of a substrate including glass fibers, including: constructing a real model, where the real model includes: the substrate, a glass fiber-woven layer on the substrate, and a transmission line trace on the substrate; performing a phase shift simulation on the real model according to phase shift value; and obtaining first information; constructing a simplified model, where the simplified model includes: the substrate, and the transmission line trace on the substrate; setting a dielectric constant of the substrate as a variable; performing parameter scanning simulation; and obtaining a second information; and according to the first and second information, determining a dielectric constant value when the phase shift value of the simplified model equals the phase shift value of the real model, and using the dielectric constant value as the effective dielectric constant of the substrate including the glass fibers.

Abstract: A robotic arm, includes a support arm, a connecting arm, a working arm and two first robotic joints, where a first end of the connecting arm is connected to the support arm by one of the first robotic joints, so that the connecting arm is foldable or unfoldable relative to the support arm; a second end of the connecting arm is connected to the working arm by the other first robotic joint, so that the working arm is foldable or unfoldable relative to the connecting arm; bent structures are arranged at two ends of the connecting arm respectively, and the two bent structures are engaged in a convex-concave shape fit with the support arm and the working arm respectively when the connecting arm is in a folded state relative to both the support arm and the working arm.

Abstract: A mechanical joint configured to connect first and second arms in a mechanical arm (001). The mechanical joint includes: a motor, wherein the motor includes a first output shaft, a motor base plate, a stator and a rotor, the rotor is located outside the stator, the first output shaft passes through the motor base plate, and the stator is connected to the motor base plate and located on the peripheral side of the first output shaft; and a planetary speed-reducing mechanism including a primary gear set and an output end, wherein the primary gear set is connected to the first output shaft and arranged adjacent to the motor base plate, and the output end is configured to drive the second arms to rotate relative to the first arm.

Abstract: A self-moving cleaning device includes a device main body and a mechanical arm. The device main body includes a holding chamber, two driving wheels and a driven wheel are distributed at a bottom of the device main body in the form of a triangle, and the mechanical arm is foldably held in the holding chamber. The mechanical arm comprises a rotatable base, and a projection of the rotatable base in a horizontal plane is located inside a projection of the triangle in the horizontal plane.

Abstract: A torque wrench is provided that includes a wrench body, wrench head, slide rod and toggle link. The wrench head includes a workpiece engaging end and an arm that extends from the workpiece engaging end, and the wrench head is pivotably connected to the wrench body such that the arm extends inwardly into the wrench body. The slide rod is disposed within the wrench body, arranged in parallel with the arm, and configured to move axially within the wrench body. The slide rod includes a roller located proximate a first end of the slide rod, and the roller is in sliding contact with an interior surface of the wrench body. The toggle link is pivotably connected to the arm and the slide rod, with the toggle link pivotably connected to the slide rod at a greater distance from the first end of the slide rod than the roller.

Abstract: A stacked package structure and a method for forming the same, are provided. The stacked package structure includes: a first substrate; a chip stacked structure on an upper surface of the first substrate, the chip stacked structure includes first semiconductor chips stacked in sequence along a direction perpendicular to the upper surface; a first functional surface of a first portion of a first flexible circuit board is mounted on a top surface of the chip stacked structure, and a second portion of the first flexible circuit board is bent to a side surface of the chip stacked structure; a part of a third functional surface of a second flexible circuit board is mounted on a second functional surface of the second portion of the first flexible circuit board; and second semiconductor chips are mounted on a fourth functional surface of the second flexible circuit board.

Abstract: A method for calibrating the reception of a phased array antenna with a built-in local oscillator and an electronic device, are provided. The method includes: constructing and configuring a test system, where a transmitting antenna is located on the central axis of a phased array antenna, and the transmitting antenna is connected to a signal source; dividing the phased array antenna into a plurality of centrally symmetric ring areas according to the central axis of the phased array antenna, and each ring area has one or more centrally symmetric sub-units, and each sub-unit includes a plurality of antenna channels of the same number; and receiving signals using the phased array antenna and transmitting signals with the transmitting antenna, and performing amplitude and phase calibrations between antenna channels within sub-units of the ring areas, between sub-units of the ring areas, and between different ring areas.