Abstract: The present invention relates to a device for testing the rotation speed of a rotor assembly, and belongs to the technical field of rotor assemblies. The device comprises a base on which a workpiece support station for horizontal placement of a rotor assembly is provided. A speed measurement element for measuring the rotation speed of the rotor shaft is indirectly or directly fixed on the base. A driving component for driving the rotor shaft to rotate is provided on one horizontal side of the workpiece support station. The driving component comprises an air inlet seat and an impeller. A rotating groove for allowing to the impeller to rotate therein is formed at the end of the air inlet seat facing the workpiece support station. An opening for allowing the impeller to enter therein is formed at the end of the rotating groove, and the outer circumferential side of the rotating groove is communicated with air inlet ages communicated with an external air source.

Abstract: This application discloses a memory circuit. Each row of cells includes M+1 bit cells. First to Mth bit cells normally store M-bit data; an (M+1) th bit cell stores opposite data of an ith bit cell; each row of sense amplifiers includes M sense amplifiers; one positive input end of an ith sense amplifier is connected with an output end of the ith bit cell; one negative input end of the ith sense amplifier is connected with an output end of the (M+1) th bit cell; two positive input ends of a jth sense amplifier are connected with an output end of a jth bit cell; two negative input ends of the jth sense amplifier are respectively connected with an output end of the (M+1) th bit cell and an output end of the ith bit cell. The memory circuit can improve data retention and increase the utilization rate of the cells.

Abstract: The present invention provides a micro-light night vision lens comprising a hollow cylinder body; a number of transition segments, communicated with each other provided in turn on an inner surface of the cylinder body along its axial extension direction; a plurality of lens units, provided in succession and at intervals at different positions on the inner surface of the cylinder body along the central axis direction thereof; a CCD unit, provided at one end of the cylinder body in the axial direction and located on the light-out side of the lens unit therein, and spaced apart from the cylinder body, the radial dimension of the CCD unit does not exceed the diameter of the lens unit at the other end of the cylinder body in the axial direction. By reasonably laying out the lens unit, the present invention obtains a larger effective focal length and imaging quality.

Abstract: The present disclosure provides a docking station and a cleaning system, where the docking station includes: at least one accommodating chamber, and a docking chamber for docking of a self-moving cleaning apparatus; and a height of the docking station is less than 350 mm. The docking station in the embodiments of the present disclosure has a smaller height and can be placed in a low space, improving adaptability of the docking station. Moreover, the integrated box is movable, and if the integrated box is placed in an embedded mode, replacement of consumables is realized by moving the integrated box, without the need to move the docking station out of the embedded space, thereby making the replacement of consumables to be more convenient.

Abstract: A lattice-based proxy signature method, apparatus and device, a lattice-based proxy signature verification method, apparatus and device, and a storage medium. Polynomials are randomly selected in rings to calculate public and private keys of nodes, and the magnitudes of proxy public and private keys are the same as the magnitudes of public and private keys of an original signer. Therefore, compared with existing proxy signature schemes, the present application has smaller lengths of public and private keys and higher storage efficiency. Proxy signature information generated in the present application shows a signature of the original signer and also shows a signature of a proxy signer. Once a proxy signature is created, the proxy signature cannot be repudiated by the proxy signer, and has strong non-repudiation and strong unforgeability. The proxy signature method has the advantage of resisting quantum computer attack.

Abstract: A controllable rapid pressure loading technology for a large volume press is provided. A regular octahedra, plugs, diamond pistons, and a standard are included. The regular octahedra is provided with a cavity with openings at two ends of the cavity. The standard is placed in the cavity. The openings at two ends of the cavity are respectively blocked by the conductive plugs. The diamond piston is arranged between the standard and the plug. The diamond pistons arranged between the standard and the plug has high hardness and has the pressure transmission efficiency superior to that of a common ceramic plug, improving compression efficiency in sample cavity. A loading method of pre-charging a pressure to a pressure loading device first and then rapidly releasing to a pressure loading mold is used to match an improved pressure transmission component, which shortens the pressure loading time of the sample cavity.

Abstract: This document relates to methods and materials involved in treating stroke. For example, nanoparticles (e.g., polymer-coated nanoparticles) designed to deliver two or more poly peptides that are normally secreted from mesenchymal stem cells (MSCs; e.g., MSCs of a human less than 33 years of age)) to the brain are provided as well as methods for using such nanoparticles to treat a mammal (e.g., a human) having or having had a stroke.

Abstract: An electrochemical apparatus includes a housing and an electrode assembly accommodated in the housing. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator wound together. The first electrode plate includes a first current collector having a first region and a second region; and a first active material layer disposed in the first region. The second region is provided at an end of the first current collector in a first direction to form a first tab. The second electrode plate includes a second current collector; at least two second tabs; and a second active material layer disposed on the second current collector. The at least two second tabs are connected to an end of the second current collector, the at least two second tabs being facing away from the second region in a first direction; the at least two second tabs are spaced apart in a winding direction of the electrode assembly and are integrally formed with the second current collector.

Abstract: An ultrasonic osteotome bit, comprising a bit body (1), a bit bar (2) and a bit tip (3). One end of the bit bar (2) is connected to the bit tip (3), and the other end of the bit bar (2) is connected to the bit body (1). The bit tip (3) is of a prism or substantially prism structure with the cross section of a polygonal structure, and the bit tip (2) has at least two cutting faces of different cutting widths. The bit is provided with a liquid flow hole (41), and the bit tip (3) is provided with a knurled structure that extends from a foremost end face of the bit tip (3) towards the bit bar (2) to form a file-type bit. The ultrasonic osteotome bit not only meets the requirement of a surgeon for the accuracy of bone cutting width, but also saves the time required to replace bits of different widths, thereby improving the surgical efficiency.

Abstract: Embodiments of the present disclosure provide a method and apparatus for processing consultation information. A specific implementation of the method includes: pushing, in response to receiving consultation information of a first user, a questionnaire corresponding to the consultation information to the first user; acquiring a questionnaire result corresponding to the questionnaire and submitted by the first user; inputting the questionnaire result into a preset consultation model, to obtain a first consultation result; pushing the questionnaire result and the first consultation result to a second user; and in response to receiving a second consultation result provided by the second user based on the questionnaire result and the first consultation result, pushing the second consultation result to the first user.

Abstract: The present invention discloses a high-strength R-T-B rare earth permanent magnet and a preparation method thereof. The magnet contains 0.3-1.5 wt. % of an element Zr, and a cast strip prepared through vacuum induction melting and melt spinning is treated at a high temperature to make the element Zr therein precipitate in a form of fibrous Zr compounds from R-rich phases, and the fibrous Zr compounds can be uniformly mixed with magnetic powder after hydrogen decrepitation and powder jet milling and mixing, and gradually grow into rod-like Zr compounds existing in the R-rich intergranular phases during the sintering of a green compact. By adjusting the content of the element Zr, sintering temperature and time and other process parameters, the morphology, size and distribution of Zr compounds can be effectively controlled, and the mechanical properties of the magnet can be improved by strengthening the R-rich intergranular phases without deteriorating the magnetic properties of the magnet.

Abstract: Disclosed is an ultrasonic surgical system, comprising: an ultrasonic transducer used for converting an alternating current signal into vibration; and an ultrasonic amplitude transformer used for amplifying the amplitude of the vibration generated by the ultrasonic transducer, wherein the product L1×C1 of a dynamic equivalent inductance L1 and a dynamic equivalent capacitance C1 of the ultrasonic surgical system in a no-load state and the product L?×C? of a dynamic equivalent inductance L? and a dynamic equivalent capacitance C? of the ultrasonic surgical system in an on-load state satisfy the relational expression ? 1 - L 1 × C 1 L ? × C ? ? = ? , such that a resonance frequency fs of the ultrasonic surgical system in the no-load state and a resonance frequency fs? thereof in the on-load state satisfy the relational expression ? 1 - f s ? f s ? = ? , wherein a is less than or equal to 0.1%, and preferably ? is less than or equal to 0.05%.

Abstract: Embodiments of the present disclosure provide a method and apparatus for processing consultation information. A specific implementation of the method includes: pushing, in response to receiving consultation information of a first user, a questionnaire corresponding to the consultation information to the first user; acquiring a questionnaire result corresponding to the questionnaire and submitted by the first user; inputting the questionnaire result into a preset consultation model, to obtain a first consultation result; pushing the questionnaire result and the first consultation result to a second user; and in response to receiving a second consultation result provided by the second user based on the questionnaire result and the first consultation result, pushing the second consultation result to the first user.

Abstract: The present disclosure relates to the field of integrated circuits protection, and specifically discloses an electrostatic protection circuit and a semiconductor structure. The electrostatic protection circuit is disposed between a first port and a second port that require electrostatic protection, comprising at least one interdigital loop and a control circuit electrically connected to the interdigital loop. The interdigital loop comprises an electrostatic protection transistor having a drain electrically connected to the first port and a source electrically connected to the second port. The control circuit comprises a first transistor and a second transistor. The drain of the first transistor and the gate of the second transistor are electrically connected to the first port. The drain of the second transistor and the gate of the first transistor are electrically connected to the second port.

Abstract: The invention provides a low power consumption selector the first PMOS's source is connected with a first data signal; the first PMOS's gate is connected with a data selection signal; the first NMOS's source is connected with a second data signal; the first NMOS's gate is connected with the data selection signal; the first NMOS's drain and the first PMOS's drain are connected and as output, access an input of the buffer; the buffer's output is used as the selector's output. When the selection signal is high level, an input signal of the buffer is the second data signal; and when the selection signal is low level, the input signal of the buffer is the first data signal. Finally, the input signal is transmitted to the output signal through the buffer. The low-power selector only needs three PMOSs and three NMOSs, which greatly reduces the power loss.

Abstract: An ultrasonic osteotome bit, comprising a bit body (1), a bit bar (2) and a bit tip (3). One end of the bit bar (2) is connected to the bit tip (3), and the other end of the bit bar (2) is connected to the bit body (1). The bit tip (3) is of a prism or substantially prism structure with the cross section of a polygonal structure, and the bit tip (2) has at least two cutting faces of different cutting widths. The bit is provided with a liquid flow hole (41), and the bit tip (3) is provided with a knurled structure that extends from a foremost end face of the bit tip (3) towards the bit bar (2) to form a file-type bit. The ultrasonic osteotome bit not only meets the requirement of a surgeon for the accuracy of bone cutting width, but also saves the time required to replace bits of different widths, thereby improving the surgical efficiency.