Abstract: The invention provides a method for cargo sorting, configured to control an end effector with a package placement platform to sort the cargo, and the method includes: moving the package placement platform to a package obtaining position and obtaining the cargo to be sorted that enters into the package placement platform; moving the package placement platform to a package storage location; and exerting a first force to push the cargo into a package storage unit. With the help of the package placement platform, the method of the invention can receive the packages of different types or different sizes or different material so as to sort and transport all kinds of packages.

Abstract: A frequency-tunable film bulk acoustic resonator and a preparation method therefor are provided. The resonator includes a substrate, an air gap, a sandwiched structure formed by electrodes and piezoelectric layers, and an electrode lead-out layer, wherein the substrate is connected to the sandwiched structure formed by the electrodes and the piezoelectric layers, and a connection face of the substrate and the sandwiched structure formed by the electrodes and the piezoelectric layers is recessed towards inside of the substrate to form the air gap; and the electrode lead-out layer is connected to the sandwiched structure formed by the electrodes and the piezoelectric layers. The sandwiched structure formed by the electrodes and the piezoelectric layers includes a bottom electrode, piezoelectric layers, intermediate electrodes, and a top electrode, wherein the electrodes and the piezoelectric layers are alternately arranged to form the sandwiched structure.

Abstract: A weeding device for crops having a seedling avoidance function includes a rack connected to a weeding machine. A hydraulic pump and two hydraulic cylinders are mounted to the rack. Bottom ends of each of the two hydraulic cylinders are provided with a vertically arranged support rod. An inter-row weeder is mounted to a bottom end of each of the two support rods. A slider configured to reciprocate in a horizontal direction is positioned on two slide rails that are mounted to the rack. An inter-plant weeder is mounted to a bottom side of the slider. A plurality of weeder blades are arranged side by side on the inter-plant weeder. At the weeding position, an arrangement direction of weeder blades is perpendicular to an advancing direction, and at the weed avoidance position, the arrangement direction of the weeder blades is parallel to the advancing direction, thereby avoiding crops.

Abstract: A microwave power control device can include: a microwave signal generator and a signal distribution circuitry connected to the microwave signal generator. The microwave signal generator is configured to generate microwave signals and transmit the microwave signals to the signal distribution circuitry; and the signal distribution circuitry is configured to distribute the microwave signals to n accelerating tubes according to a target microwave power distribution ratio, n being an integer greater than or equal to 2.

Abstract: The invention is a copper alloy with excellent comprehensive performance, including the following components in percentage by weight: 0.4 wt %-2.0 wt % of Ni, 0.2 wt %-2.5 wt % of Sn, 0.02 wt %-0.25 wt % of P, 0.001 wt %-0.5 wt % of Si, and the balance of Cu and unavoidable impurities. The copper alloy has a yield strength of 550 MPa or above, and an electrical conductivity of 38% IACS or above. A bending workability is as follows: the value of R/t in the GW direction is less than or equal to 1, and the value of R/t in the BW direction is less than or equal to 2; and after the copper alloy is kept at 150° C. for 1000 hours, a residual stress rate is greater than or equal to 75%, and the stress relaxation resistance is excellent.

Abstract: Provided is an apparatus and method for detecting grout compactness in grouted splice sleeve, the apparatus comprises a probe assembly, which comprises at least one of capacitive probe and piezoelectric sensor and is arranged inside the grouted splice sleeve to detect parameters of the sleeve during grouting and curing and a detector, which comprises at least an analysis module that is connected with the probe assembly to obtain the detected parameters and carry out calculation and analysis for the parameters. The probe assembly is arranged inside the grouted splice sleeve and forms a loop with the detector during grouting, such that during the process of grouting, the detected parameters will be changed as the surrounding dielectric changes, therefore, the detector may determine in real time whether the grouted splice sleeve is fully grouted by calculating and analyzing the detected parameters, which achieves a faster and easier grout compactness detection.

Abstract: Provided is a method for determining a rotation speed of a gantry. The method includes: acquiring control information of the gantry, wherein the control information of the gantry includes: leaf information and dose information of control points; determining the rotation speed of the gantry and dose rates at the control points based on the leaf information and the dose information of the control points; and adjusting the rotation speed of the gantry based on the dose rates at the control points and a maximum equipment dose rate.

Abstract: The present disclosure provides a radiation therapy device and system. The radiation therapy device includes a first treatment head and a second treatment head. A beam emitted from the second treatment head intersects with a beam emitted from the first treatment head at an intersection point. The first treatment head is an X-ray treatment head, and the second treatment head is an X-ray treatment head, a multi-source focusing treatment head, or an intensity-modulated treatment head. The radiation therapy device may increase a dose rate at the intersection point.

Abstract: The invention is a precipitation-strengthened copper alloy, including the following components in percentage by weight: 80 wt %-95 wt % of Cu, 0.05 wt %-4.0 wt % of Sn, 0.01 wt %-3.0 wt % of Ni, 0.01 wt %-1.0 wt % of Si, and the balance of Zn and unavoidable impurities. According to the invention, the comprehensive performance of the alloy is improved by solution strengthening and precipitation strengthening; while the strength of the matrix is improved, the electrical conductivity of the alloy is hardly affected, the bending workability meets the requirements, and the stress relaxation resistance comparable to that of tin phosphor bronze is achieved. The comprehensive performance of the alloy of the invention is superior to that of the tin phosphor bronze C51900. Furthermore, the alloy of the invention is low in raw material cost, has obvious advantages in welding and plating.

Abstract: Provided is a signal transmission apparatus for radiation equipment. The signal transmission apparatus includes a first wireless transmission component, the first wireless transmission component includes a first antenna and a second antenna; wherein the first antenna is a loop antenna, and the first antenna is disposed on a gantry in the radiation equipment and is rotatable synchronously with the gantry; and the second antenna is disposed separately from the gantry and is wirelessly connected to the first antenna.

Abstract: A method and device for updating data, an electronic device and a storage medium are provided. The method includes that: a first image of a target object is acquired, and a first image feature of the first image is acquired; a second image feature is acquired from a local face database; similarity comparison is performed between the first image feature and the second image feature to obtain a comparison result; responsive to that the comparison result is greater than a feature update threshold, a difference feature between the first image feature and the second image feature is acquired, and the difference feature is taken as a dynamic update feature; and the second image feature is adaptively updated according to the dynamic update feature to obtain updated feature data of the target object.

Abstract: The present invention discloses a copper alloy, which includes: 5 wt % to 15 wt % of Zn, 0.2 wt % to 2.5 wt % of Sn, 0.1 wt % to 2.0 wt % of Ni, 0.01 wt % to 0.3 wt % of P, 0 to 0.3 wt % of Mg, 0 to 0.5 wt % of Fe, and a balance of Cu and inevitable impurities. Preferably, it is controlled that 1.0 wt %?Ni+Sn?3.5 wt %, the weight ratio of Ni to Sn is 0.08 to 10; the weight ratio of Ni to P is 2 to 15, Ni and P form a NiP compound in a matrix. During the crystal orientation analysis using EBSD measurement, the area in a Brass orientation {011}<211> at a derivation angle of less than 15° accounts for 10% to 25%. The yield strength 600 MPa, the electrical conductivity is ?25% IACS, and the bending machinability is excellent because the value R/t in a GW direction is ?1 and the value R/t in a BW direction is ?2.

Abstract: An ambient light parameter is acquired by detecting ambient light of a surveillance area. When there is a target object in the surveillance area, a movement distance of the target object is detected. When the ambient light parameter meets an ambient light condition and the movement distance of the target object is no less than a distance threshold, the ambient light parameter is changed by adjusting screen brightness of a display device according to the ambient light parameter. A face image of the target object after the ambient light parameter has been changed is acquired. A comparison result of comparing the face image to a preset image is acquired. A face recognition result is acquired according to the comparison result.

Abstract: Provided are a method and device for detecting a living-body, and a storage medium. The method includes that: a first image captured by a first camera is acquired, and face detection processing is performed on the first image; a second image captured by a second camera is acquired responsive to detecting that the first image includes a face, where the first camera and the second camera are different types of cameras; and face detection processing is performed on the second image, and responsive to detecting that the second image includes a face, a living-body detection result is obtained based on a matching result of the face detected in the first image and the face detected in the second image.

Abstract: Embodiments herein disclose a method and device for processing an image, electronic equipment, and a storage medium. The method is as follows. A face image frame sequence of which a first face parameter meets a preset condition is acquired by filtering an image frame sequence. A second face parameter of each face image in the face image frame sequence is determined. A quality score of the each face image in the face image frame sequence is determined according to the first face parameter and the second face parameter of the each face image in the face image frame sequence. A target face image for face recognition is acquired according to the quality score of the each face image in the face image frame sequence.

Abstract: Provided is an apparatus and method for detecting grout compactness in grouted splice sleeve, the apparatus comprises a probe assembly, which comprises at least one of capacitive probe and piezoelectric sensor and is arranged inside the grouted splice sleeve to detect parameters of the sleeve during grouting and curing and a detector, which comprises at least an analysis module that is connected with the probe assembly to obtain the detected parameters and carry out calculation and analysis for the parameters. The probe assembly is arranged inside the grouted splice sleeve and forms a loop with the detector during grouting, such that during the process of grouting, the detected parameters will be changed as the surrounding dielectric changes, therefore, the detector may determine in real time whether the grouted splice sleeve is fully grouted by calculating and analyzing the detected parameters, which achieves a faster and easier grout compactness detection.

Abstract: A jaw assembly and a medical accelerator are provided. The jaw assembly includes: a jaw base, a moving assembly and at least one set of jaws, each set of jaws including at least two jaw bodies. The jaw base is detachably connected to a mounting seat of a treatment head beam shaping module of a medical accelerator, and when the jaw base is mounted on the mounting seat, a beam opening formed is located under the treatment head beam shaping module. The jaw body is connected to the jaw base through the moving assembly, and the moving assembly is configured to move the jaw body to between the beam opening and the treatment head beam shaping module, or to move the jaw body out between the beam opening and the treatment head beam shaping module to adjust a beam flow through the beam opening.

Abstract: Provided are an access control method and device, and a storage medium. The method includes that: a collected image to be recognized is recognized to obtain a recognition result, where the image to be recognized includes a present graphic code; in condition that the recognition result indicates that the present graphic code is a target graphic code, the present graphic code is parsed to obtain user information and generation time contained in the present graphic code; and an access control device is controlled to be opened according to the user information and generation time in the present graphic code.

Abstract: An identity verification method and device and a storage medium are provided. The method includes that: a face image of an object to be verified is acquired; responsive to the condition that the face image is included in a predetermined face image library, a target verification mode for the object to be verified is acquired; and the object to be verified is verified according to the target verification mode to obtain a verification result.

Abstract: The treatment couch includes a couch panel, a main supporting structure, an auxiliary supporting structure and a supporting beam. Both ends of the supporting beam are respectively connected to the main supporting structure and the auxiliary supporting structure.