Abstract: The present invention relates to a hyaluronic acid-based hydrogel precursor solution, a hyaluronic acid-based hydrogel, a preparation method and a repair material thereof. The hyaluronic acid-based hydrogel precursor solution includes a component A and a component B; the component A is prepared by the following steps: step S1, mixing methacrylate group-modified hyaluronic acid with furfuryl amine for reaction, to obtain furan-methacrylate modified hyaluronic acid; step S2, mixing the furan-methacrylate modified hyaluronic acid with maleimide for reaction, to obtain hyaluronic acid modified with dual groups; and step S3, mixing the hyaluronic acid modified with dual groups with a photoinitiator and a solvent, to obtain the component A; and the component B is a mercapto polyethylene glycol solution.

Abstract: The present invention provides a samarium-iron-based rare earth permanent magnet material containing a grain boundary phase, having a chemical formula of SmaFebCocTidMe, wherein 0.5?a?1.5, 7.5?b?9.0, 2.0?c?3.0, 0.5?d?1.5, 0.1?e?2.0, and M is selected from the group consisting of B, C, Al, Si and a combination thereof. The present invention further provides a method for preparing a samarium-iron-based rare earth permanent magnet material containing a grain boundary phase, comprising providing raw materials of the alloy, melting and casting the raw materials to obtain a master alloy; and subjecting the master alloy to rapid quenching and melt-spinning to obtain the samarium-iron-based rare earth permanent magnet material containing the grain boundary phase. In the method, a problem that a non-magnetic grain boundary phase cannot be formed in the samarium-iron-based rare earth permanent magnet material due to the lack of liquid phase is solved, and the purity of the main phase is improved.

Abstract: An optical module includes a circuit board and a lens assembly. A light monitoring chip and a light emitting chip are arranged on the circuit board and covered by the lens assembly covers. The lens assembly is provided with: a first bevel forming a first preset angle for receiving a light signal emitted by the light emitting chip and splitting the light signal into a first split light and a second split light; a second bevel forming a second preset angle; a third bevel forming a third preset angle; a fourth bevel forming a fourth preset angle. The first split light may change its transmission direction of via cooperation of the first, second and the first preset angle, and is transmitted to a first optical fiber array. The second split light is transmitted to the light monitoring chip via cooperation of the fourth and first preset angle.

Abstract: Embodiments of this application provide a projection display method and an electronic device, and relate to the field of terminal technologies, to dynamically adjust, based on a quantity of source devices, a parameter of display data projected onto a destination device, so as to improve display smoothness and use experience of a user during projection. The method includes: A source device sends a projection instruction to a destination device, where the projection instruction is used to instruct to project a display interface of the source device onto the destination device for display. The source device receives a first broadcast sent by the destination device, where the first broadcast includes a quantity N of source devices that need to perform projection onto the destination device for display.

Abstract: In one embodiment, a method includes receiving a user request from a first user to create a reminder at a client system, wherein the user request does not specify an activation-condition for the reminder, determining proactive activation-conditions for the reminder, determining whether the proactive activation-conditions for the reminder are satisfied based on user context associated with the first user, and presenting the reminder to the first user at the client system responsive to determining the proactive activation-conditions are satisfied.

Abstract: An image processing method includes: according to position coordinates of any interpolation pixel in a target image, determining position coordinate of the interpolation pixel in an original image; calculating a two-dimensional image entropy of an (n×n) neighborhood of the interpolation pixel in the original image; when it is greater than or equal to a preset entropy threshold value, calculating a pixel value of the interpolation pixel based on all original pixels; when it is less than the preset entropy threshold, calculating gradient values in at least two edge directions within the threshold neighborhood and determining whether there is a strong-edge direction; if so, calculating the pixel value of the interpolation pixel based on a plurality of original pixels in the strong-edge direction; if not, calculating the pixel value of the interpolation pixel based on all the original pixels.

Abstract: The present invention belongs to the technical field of pharmaceutical chemistry, and particularly relates to a 1-aminobenzo[4,5]imidazo[1,2-a]pyrazine-3-formamide compound, and the preparation therefor and use thereof. The structure of the compound of the present invention is as shown in formula (I). The compound has a novel structure and is an adenosine receptor inhibitor, has good inhibitory activity on adenosine A2A receptors, has good subtype selectivity, and can be used as a targeted adenosine A2A receptor inhibitor for immunotherapy. By means of inhibiting the activity of the adenosine A2A receptor, the function of removing tumor cells by the immune system is released, so that the effect of treating tumors is achieved.

Abstract: Provided a method for processing an image, including: acquiring an interpolation image by performing interpolation processing on a to-be-processed image, wherein the interpolation image includes a plurality of interpolation pixels; acquiring, for each of the interpolation pixels, a first candidate pixel value and a second candidate pixel value by adjusting the initial pixel value of the interpolation pixel; determining a first difference between a second derivative of the first candidate pixel value and a second derivative of a pixel value of a target original pixel; determining a second difference between a second derivative of the second candidate pixel value and the second derivative of the pixel value of the target original pixel; and updating the initial pixel value of the interpolation pixel; wherein the target original pixel includes each original pixel adjacent to the interpolation pixel.

Abstract: An anti-force brake testing platform for an electric vehicle based on model predictive control (MPC) includes a first testing unit; a second testing unit; a third testing unit; a fourth testing unit; a wheelbase adjustment device; and a control cabinet system. The first and second testing units are structurally identical and have the same height, and are provided at the same horizontal foundation plane, with each including a first driving device, a first roller group, a first lifting device, a steering device, a frame, and a first control and test device. The third and fourth testing units are structurally identical, with each including a second driving device, a second roller group, a second lifting device, an anti-slip stopping mechanism, a first fixed base frame, a locking mechanism, and a second control and test device. The wheelbase adjustment device includes a second fixed base frame and a movable stand.

Abstract: A gas turbine overspeed protection method includes: a power utilization load of a generator is acquired, and a rotating speed value of a gas turbine is acquired; whether the power utilization load suddenly decreases or disappears is judged, and if so, an eddy current retarder is controlled by a controller to simulate the power utilization load to provide a braking torque for the generator; or, whether the rotating speed value exceeds a set speed range is judged, and if so, the gas turbine is controlled by the controller to reduce fuel supply, and a discharge valve of a gas compressor is opened to discharge a high-pressure gas to reduce the power output and the rotating speed of the gas turbine.

Abstract: A temporary MEMS-based locking assembly is configured to temporarily compress electrically conductive flexures and includes: a first locking structure coupled to a first portion of a MEMS conductive assembly; a second locking structure coupled to a second portion of the MEMS conductive assembly, wherein: the electrically conductive flexures are positioned between the first portion of the MEMS conductive assembly and the second portion of the MEMS conductive assembly, and the first and second locking structures are configured to engage each other upon the compression of the electrically conductive flexures to effectuate the locking of the first portion of the MEMS conductive assembly with respect to the second portion of the MEMS conductive assembly.

Abstract: A fracturing apparatus includes a motor, a first plunger pump, a power supply platform, a gas turbine engine, a generator, and one or more rectifiers. At least two of the gas turbine engine, the generator, and the one or more rectifiers are arranged on the power supply platform. A first end of the generator is connected to the gas turbine engine. A second end of the generator is connected to the one or more rectifiers. The generator is configured to output a voltage to the one or more rectifiers. The one or more rectifiers are configured to provide power to the motor. The motor is configured to drive the first plunger pump.

Abstract: A communication protocol switching method includes that a first device communicates with a second device using a first protocol to project a screen of the first device to the second device; and when a first application in the first device is opened or a media file stored in the first device is opened, the first device switches to a second protocol to communicate with the second device and to project a display user interface of the first application or the media file to the second device, where the first application manages or plays at least one media file.

Abstract: A payment method applied to a merchant client device, includes receiving a first instruction for selecting a first payment method for a first order on a first selection page by a target user. In an interface of a merchant client device, an account confirmation page of a first wallet corresponding to the first payment method is displayed. A confirmation instruction sent by the target user based on the account confirmation page is received. A checkout page of the first wallet is displayed in the interface of the merchant client device. Identity verification information entered by the target user based on the checkout page is received. A first payment result page is displayed, where the first payment result page comprises at least a payment result corresponding to the first order.

Abstract: An air conditioner includes a plurality of flat tubes, a first header, a second header, a third header and a connecting pipe. The plurality of flat tubes are configured to circulate a gas-liquid two-phase refrigerant. The first header is disposed at an end of the plurality of flat tubes. The second header is disposed at another opposite end of the plurality of flat tubes, and includes a header body and at least one flow disturbing portion. The at least one flow disturbing portion is disposed in the header body and configured to disturb a flow of the gas-liquid two-phase refrigerant in the header body. The third header is disposed at the another opposite end of the plurality of flat tubes. The connecting pipe communicates with the header body of the second header and the third header.

Abstract: A multi-axis MEMS assembly is configured to provide multi-axis movement and includes: a first in-plane MEMS actuator configured to enable movement along at least an X-axis; and a second in-plane MEMS actuator configured to enable movement along at least a Y-axis; wherein the first in-plane MEMS actuator is coupled to the second in-plane MEMS actuator.

Abstract: A package for moving a platform in six degrees of freedom, is provided. The platform may include an optoelectronic device mounted thereon. The package includes an in-plane actuator which may be a MEMS actuator and an out-of-plane actuator which may be formed of a piezoelectric element. The in-plane MEMS actuator may be mounted on the out-of-plane actuator mounted on a recess in a PCB. The in-plane MEMS actuator includes a plurality comb structures in which fingers of opposed combs overlap one another, i.e. extend past each other's ends. The out-of-plane actuator includes a central portion and a plurality of surrounding stages that are connected to the central portion. The in-plane MEMS actuator is coupled to the out-of-plane Z actuator to provide three degrees of freedom to the payload which may be an optoelectronic device included in the package.

Abstract: A MEMS imaging actuator assembly includes: a first structural assembly; a second structural assembly; and a tip-tilt displacement assembly, configured to position the first structural assembly with respect to the second structural assembly, including: one or more multi-morphic thin film actuator assemblies, and one or more motion control assemblies; wherein one of the structural assemblies is configured to mount an optical device.

Abstract: A communication protocol switching method includes that a first device communicates with a second device using a first protocol to project a screen of the first device to the second device; and when a first application in the first device is opened or a media file stored in the first device is opened, the first device switches to a second protocol to communicate with the second device and to project a display user interface of the first application or the media file to the second device, where the first application manages or plays at least one media file.

Abstract: A multi-axis MEMS assembly includes: a micro-electrical-mechanical system (MEMS) actuator configured to provide linear three-axis movement, the micro-electrical-mechanical system (MEMS) actuator including: an in-plane MEMS actuator, and an out-of-plane MEMS actuator; and an optoelectronic device coupled to the micro-electrical-mechanical system (MEMS) actuator; wherein the in-plane MEMS actuator includes an electromagnetic actuator portion.