Abstract: Provided is an automatic cleaning device, including: a moving platform including an accommodation chamber; and a position determination apparatus, at least a part of the position determination apparatus provided in the accommodation chamber; a circuit board provided in the moving platform and disposed adjacent to the accommodation chamber; and a water retaining frame provided between the circuit board and the accommodation chamber so as to prevent liquid from flowing into the circuit board.

Abstract: A mesoporous cerium oxide nano-material and a preparation method and an application thereof are provided in the present disclosure, belonging to the technical field of porous materials. The preparation method includes the following steps: using porous organic frameworks material as a templating agent, impregnating and adsorbing cerium salt precursor under an action of alkali, and removing the templating agent by roasting pyrolysis to obtain the mesoporous cerium oxide nano-material. POFs is carbonized into mesoporous carbon materials by calcination in inert atmosphere, which supports the mesoporous channels of cerium oxide, and then the carbonized carbon materials of POFs are removed by calcination in air atmosphere, forming the mesoporous structure of cerium oxide. The mesoporous cerium oxide nano-material prepared by the present disclosure has a high specific surface area and mesoporous structure, and is used as a catalytic material or catalyst carrier.

Abstract: A device for mass transfer of Mini-LEDs based on array water jet-based ejection, including a planar motion platform, a vision camera, an array water jet-type ejection unit, a Z-axis motion platform, a blue membrane, an operation platform and a transfer substrate. The vision camera and the array water jet-type ejection unit are provided on a side of the planar motion platform. The array water jet-type ejection unit includes a water jet channel and a through-hole array. The Z-axis motion platform is provided at a side of the planar motion platform near the vision camera, and is configured for placement of the blue membrane. Multiple Mini-LED chips are bonded to the blue membrane. The operation platform is spacedly provided at a side of the Z-axis motion platform away from the planar motion platform.

Abstract: The present invention provides a high voltage ride-through method for wind power based on coordinated control of energy storage and reactive compensation devices, comprising fault determination based on voltages of grid connection points of wind farms; setting voltage fluctuation thresholds of grid connection points under faults, and determining whether to implement super capacitor, doubly-fed induction generator, and static var generator coordinated control strategies based on voltage fluctuation thresholds of grid connection points of commutation bus voltages under faults; calculating reactive power shortage of grid connection points under faults based on the control strategies; and determining whether the reactive power shortage of grid connection points is within wind farm regulation ranges and implement corresponding control strategies to adjust voltages based on the reactive power shortage; and determining whether to utilize static var generators to compensate reactive power based on reactive power comp

Abstract: The present disclosure provides an automatic cleaning device, including: a moving platform, configured to automatically move on an operation surface and comprising a cover plate.

Abstract: An automatic cleaning device, including an assembly structure configured to assemble a position determination device on a mobile platform T the assembly structure includes an assembly bracket including: a rotor accommodation portion that includes a first arc-shaped side wall; and a motor accommodation portion that includes a second arc-shaped side wall. The position determination device includes a position determination element including: a rotor, a rotating shaft of the rotor being substantially disposed in a geometric center of the rotor accommodation portion; and a motor, an output shaft of the motor being substantially disposed on a connecting line between a geometric center of the motor accommodation portion and the geometric center of the rotor accommodation portion.

Abstract: The present disclosure provides a virtual viewpoint synthesis method, including: pre-processing a depth image with zero parallax corresponding to an original image to obtain a processed depth image; generating virtual viewpoint images corresponding to a plurality of virtual viewpoints respectively according to the processed depth image and the original image; and filling holes in the virtual viewpoint image to generate a plurality of filled virtual viewpoint images. The present disclosure further provides an electronic apparatus and a computer-readable medium.

Abstract: The present disclosure provides a display device, a sound-emitting control method, and a sound-emitting control device. The device includes: a display screen which includes a first display region, a middle display region, and a second display region; a plurality of sound-emitting units, which include: a plurality of first sound-emitting units, a plurality of second sound-emitting units and a plurality of third sound-emitting units; the plurality of first sound-emitting units and the plurality of second sound-emitting units respectively include a sound-emitting unit which emits sounds at a first frequency band, a sound-emitting unit which emits sounds at a second frequency band, and a sound-emitting unit which emits sounds at a third frequency band; the first, second, and third frequency bands increase in turn; and all of the plurality of third sound-emitting units are the sound-emitting units emitting sound in the second frequency band.

Abstract: A display method and system for ultrasound-guided intervention. The method comprises: obtaining, via a probe, a data, wherein the data comprises at least a real-time ultrasound data and a real-time spatial orientation information of the probe; obtaining, by a processor, an ablation needle plan, wherein, the ablation needle plan comprises at least a probe marker for planning, a needle insertion path and a predicted ablation area corresponding to the needle insertion path, and the probe marker for planning is generated in a form that is able to indicate one side or multiple sides of the probe such that an orientation of the probe marker for planning represents a planned orientation of the probe; generating, by the processor, a guiding image for ultrasound-guided intervention according to the obtained data and the ablation needle plan; and displaying, by a display device, the guiding image.

Abstract: A control display method and apparatus, a device, and a storage medium are provided. The method includes: first, upon receipt of a preset comment behavior of a current user with respect to a target video, determining whether the current user has added a display object corresponding to the target video to favorites, the preset comment behavior being used for representing interest of the current user in the display object; and if it is determined that the current user has not added the display object to favorites, displaying on a comments panel corresponding to the target video a favorites control corresponding to the display object, so as to add the display object to favorites.

Abstract: The present disclosure a temperature-resistant and salt-resistant modified nano-graphite dispersed particle gel system with a strong self-growth effect.

Abstract: The present disclosure a temperature-resistant and salt-resistant modified nano-graphite dispersed particle gel system with a strong self-growth effect.

Abstract: A data processing method and system, a user state determination method and system, a storage medium, and an electronic device are provided. The data processing method includes: determining a first head posture vector of a target user, wherein the first head posture vector is a vector in a direction of a sagittal axis of a head of the target user; and determining first head orientation data of the target user based on the first head posture vector, wherein the first head orientation data includes angle data of rotation around a coronal axis of the head, and angle data of rotation around a vertical axis of the head. Data straightforwardly representing head orientation is obtained to determine a user state in an assisted driving field.

Abstract: A control display method and apparatus, a device, and a storage medium are provided. The method includes: first, upon receipt of a preset comment behavior of a current user with respect to a target video, determining whether the current user has added a display object corresponding to the target video to favorites, the preset comment behavior being used for representing interest of the current user in the display object; and if it is determined that the current user has not added the display object to favorites, displaying on a comments panel corresponding to the target video a favorites control corresponding to the display object, so as to add the display object to favorites.

Abstract: The present invention is directed to a flowable hemostatic paste comprising a crosslinked carboxymethyl cellulose and at least one non-toxic dispersant. More specifically the present invention relates to a hemostatic paste containing citric acid cross-linked CMC, which is suspended or dispersed as a powder in a mixture of a first non-toxic glycerol-containing hygroscopic dispersant and a second non-toxic alcohol functionalized dispersant comprising propylene glycol or 1,3-butanediol.

Abstract: A method for characterizing graphene on a platinum substrate, including: coating a methylene blue developing solution to a platinum substrate having a surface covered with graphene, so that the methylene blue developing solution reacts with hydrogen-containing gas under catalysis of platinum to yield colorless methylene white; after the pressure is restored, methylene white in the exposed area of platinum substrate will quickly turn blue when it is oxidized into methylene blue by reacting with oxygen in the air under catalysis of platinum. Thus, color difference can be formed to facilitate the observation of the graphene. The characterization method is highly reproducible and simple, and can be used to characterize graphene with a large area on a platinum substrate. The characterization method does not damage the graphene and platinum substrate, has no negative impact on the quality of graphene, and the platinum substrate can be recycled to reduce costs.

Abstract: A method for characterizing graphene on a platinum substrate, including: coating a methylene blue developing solution to a platinum substrate having a surface covered with graphene, so that the methylene blue developing solution reacts with hydrogen-containing gas under catalysis of platinum to yield colorless methylene white; after the pressure is restored, methylene white in the exposed area of platinum substrate will quickly turn blue when it is oxidized into methylene blue by reacting with oxygen in the air under catalysis of platinum. Thus, color difference can be formed to facilitate the observation of the graphene. The characterization method is highly reproducible and simple, and can be used to characterize graphene with a large area on a platinum substrate. The characterization method does not damage the graphene and platinum substrate, has no negative impact on the quality of graphene, and the platinum substrate can be recycled to reduce costs.

Abstract: The present disclosure is provides a method, an apparatus and a terminal device for constructing parts together. The method includes: determining an assembly progress of an object constructed of parts; determining a currently required part according to the assembly progress; identifying, in a part photo of the object, the currently required part using a pre-trained first neural network model and marking the one or more identified currently required parts in the part photo; and displaying, via a display, a 3D demonstration animation with the marked part photo as a background image. The method is based on the existing 3D demonstration animation, which identifies the currently required part in the captured part photo and marks the identified currently required part in the part photo, and then displays the marked part photo as the background image of the 3D demonstration animation, thereby adding a prompt for the real part.

Abstract: A method and an apparatus for generating a three-dimensional point cloud image, a computer device and a storage medium. The method comprises: detecting three-dimensional shape coordinates of a three-dimensional object in an infrared camera coordinate system; detecting three-dimensional marker coordinates of the marker set in a marker measurement coordinate system at the same time; obtaining, according to a pre-stored first conversion relationship and a second conversion relationship parameter, three-dimensional color coordinates in the infrared camera coordinate system on the basis of the three-dimensional marker coordinates in the marker measurement coordinate system; and generating a three-dimensional point cloud image of the three-dimensional object in the infrared camera coordinate system by combining the three-dimensional shape coordinates and the three-dimensional color coordinates of the three-dimensional object in the infrared camera coordinate system.

Abstract: The present invention is directed to a flowable hemostatic paste comprising a crosslinked carboxymethyl cellulose and at least one non-toxic dispersant. More specifically the present invention relates to a hemostatic paste containing citric acid cross-linked CMC, which is suspended or dispersed as a powder in a mixture of a first non-toxic glycerol-containing hygroscopic dispersant and a second non-toxic alcohol functionalized dispersant comprising propylene glycol or 1,3-butanediol.