Abstract: The invention discloses a vibration device, a bone conduction headphone, and an intelligent hardware device, which belong to the field of vibration technology. The vibration device comprises: a case; an electromagnetic driving part including a coil connected to the case; and a vibrator, including a magnetic part movably arranged in the coil and an elastic part connected between the magnetic part and the case; the magnetic part includes at least two magnet portions and a non-magnetic portion located between two adjacent magnet portions. In the present invention, the magnetic part is made of magnetic material integrally magnetized. Compared with the original structure that requires multiple magnets to be connected, it has fewer parts, and is more convenient to install, while also achieving higher dimensional accuracy, thereby improving the assembly accuracy with the coil.

Abstract: There is described herein a nanoparticle comprising an outer shell comprising a porphyrin salt, an expanded porphyrin salt or an analog of porphyrin salt, around an inner oil core.

Abstract: The present application discloses an occluder, including a distal disc, a waist portion, and a proximal disc which are formed in sequence. The proximal disc includes a proximal disc surface. A proximal bending area is formed at a circumference of the proximal disc surface and bent towards the distal disc, where the proximal bending area surrounds an edge of the distal disc, and a stabilizing wire is further threaded through a free end of the proximal bending area and may tighten the free end of the proximal bending area towards the waist portion.

Abstract: Disclosed in the present application are a concrete protection material, and a preparation method and a construction method therefor. The concrete protection material consists of 50%-90% of a component A and 10%-50% of a component B in percentage by weight, where the component A is prepared from 30%-65% of organic silicon, 2%-5% of nano-silicon dioxide and the balance of an organic solvent in percentage by weight; and the component B is prepared from 20%-50% of an organic base and the balance of water in percentage by weight. The present application not only can form nano-particles having a strengthening effect in capillary channels of a concrete surface layer, but also can achieve a technical effect of superhydrophobicity on the concrete surface layer.

Abstract: The disclosure provides a communication delay compensation method and a communication delay compensation system based on an autonomous robot, where the method includes the following steps: establishing a state equation based on a system model of an the AUV positioning system; acquiring an included angle between a direction vector of the AUV to an observation station and a velocity vector of the AUV based on the system model; establishing an observation equation according to the state equation and the included angle; establishing an extended Kalman filter equation based on the system model, the included angle and the observation equation; and calculating a position information predicted value at the current time by using the extended Kalman filter equation to complete communication delay compensation.

Abstract: A fluorocarbon/palladium/magnesium-scandium hydrogen-chromic film and a preparation method thereof are provided. The film includes a magnesium-scandium composite film layer, a palladium catalytic layer, and a fluorocarbon film layer that are sequentially arranged on a substrate. The preparation method includes: growing the magnesium-scandium composite film layer on the substrate first, then growing the palladium catalytic layer in situ on the magnesium-scandium layer, and finally depositing the fluorocarbon film layer on Pd. According to the present invention, the catalytic effect of palladium is utilized to promote reversible conversion between hydrogen and hydrogen atoms during hydrogen absorption and dehydrogenation stages, and a composite scandium element is added to accelerate diffusion of the hydrogen atoms in a magnesium matrix and accelerate formation and decomposition of a hydride, such that the film can be repeatedly and rapidly switched between a reflective state and a transparent state.

Abstract: A method for training a fingerprint anti-counterfeiting neural network, a method for fingerprint anti-counterfeiting and an apparatus are provided. The method includes: obtaining groups of training data, each group of the training data includes: first raw domain data, second raw domain data, and third raw domain data; and training an initial classification network using the plurality of groups of training data to obtain a target classification network. The initial classification network includes a fusion subnetwork and a classification subnetwork The fusion subnetwork generates a first fingerprint matching pair based on a feature description matrix of the first raw domain data and the second raw domain data, and generates a second fingerprint matching pair based on a feature description matrix of the first raw domain data and the third raw domain data. The classification subnetwork performs fingerprint classification and recognition based on the first and second fingerprint matching pairs.

Abstract: A fingerprint detection method and apparatus, a program product, and a storage medium are provided. The method includes: obtaining native domain information of a to-be-detected fingerprint, where the native domain information is original data collected when the to-be-detected fingerprint is verified; executing fingerprint feature extraction on the native domain information to obtain a fingerprint feature matrix of the to-be-detected fingerprint; executing a classification operation on the fingerprint feature matrix through a trained medium classification network to obtain a fingerprint medium classification vector of the to-be-detected fingerprint, where the fingerprint medium classification vector is used for representing, in a vector form, a probability that the to-be-detected fingerprint belongs to a plurality of medium types respectively; and determining a medium type of the to-be-detected fingerprint based on the fingerprint medium classification vector.

Abstract: A cell growth promoter and an application thereof are provided. The invention adopts Fe2+ and ovalbumin to form a Fe2+-ovalbumin (OVA) compound to promote ovalbumin cell endocytosis, the cell growth promoter can maintain cell growth in an environment free of amino acids, promote cell proliferation in an environment with amino acids; and, the Fe2+-OVA compound can replace expensive animal serum albumin in cell culture, the cell growth promoter has a significant effect on improving cell viability and is low cost.

Abstract: A cooking appliance having a cabinet including an insert within the cabinet to define cooking chamber with an access opening and a door selectively closing/opening the access opening, the cooking appliance comprising at least one of a first cooling flow path through a back wall of the cabinet, over a top wall of the insert, and out a side wall of the cabinet, a second cooling flow path through a bottom wall of the cabinet, along the bottom wall of the cabinet, and out a side wall of the cabinet, and a third cooling flow path through a bottom wall of the cabinet, out a front wall of the cabinet, into the door, out of the door, into a front wall of the cabinet, and out of a side wall of the cabinet.

Abstract: A dimming module is provided to include a first substrate, a second substrate, spacers, a border sealing glue and dye liquid crystals; the first substrate includes a first base, a first conductive layer and a first alignment film sequentially stacked on a side of the first base close to dye liquid crystals; the spacers are on a side of the first conductive layer close to the dye liquid crystals; the second substrate includes a second base, a second conductive layer and a second alignment film sequentially stacked on a side of the second base close to dye liquid crystals; the second substrate and the first substrate are aligned and assembled, the border sealing glue is therebetween and surrounds them to form a dimming region in which the dye liquid crystals are positioned and a spacing distance between every two adjacent spacers is from 50 ?m to 1000 ?m.

Abstract: A cooking appliance having a cabinet including an insert within the cabinet to define cooking chamber with an access opening and a door selectively closing/opening the access opening, the cooking appliance comprising at least one of a first cooling flow path through a back wall of the cabinet, over a top wall of the insert, and out a side wall of the cabinet, a second cooling flow path through a bottom wall of the cabinet, along the bottom wall of the cabinet, and out a side wall of the cabinet, and a third cooling flow path through a bottom wall of the cabinet, out a front wall of the cabinet, into the door, out of the door, into a front wall of the cabinet, and out of a side wall of the cabinet.

Abstract: A steering wheel structure for an omnidirectional mobile robot chassis is provided. The steering wheel structure can realize two degrees of freedom: the rudder rotation of the steering wheel rotation and the full free movement realized in the horizontal plane, it has the characteristics of a small size and a lower height. The wheel assembly realizes the movement of the steering wheel when it moves forward; the rudder assembly realizes the movement of the steering wheel when the steering wheel rotates, initializes the steering direction, and calibrates the rotation through the zero position sensor; the suspension assembly realizes the damping and buffering of the longitudinal motion of the steering wheel; the wiring assembly constrains the movement of various wires when the rudder rotates; the support plate is used for the connection and support of the wheel assembly and the wiring assembly with the rudder assembly.

Abstract: Disclosed are a hook and an occluder. The hook is used for being fixed to the occluder. The occluder is formed by interweaving a first-direction line and a second-direction line. The hook includes a positioning body and hook portions. The positioning body is provided with first and second positioning portions. The first and second positioning portions are configured to limit the hook to the first-direction line and the second-direction line, respectively, or to simultaneously limit, in different directions of force, the hook in an axial direction to the first-direction line/the second-direction line. The hook portion is formed by bending the positioning body. An included angle ? is formed between a projection of the hook portion on the positioning body and an axis of the positioning body, and the included angle ? is in a range of greater than 0 degrees and less than 90 degrees.

Abstract: A woven single-riveting degradable implant belonging to the technical field of medical devices convertible between a compressed configuration and a free configuration comprises a first structure, a second structure, and a middle portion provided between the first structure and the second structure, wherein the implant is woven with weaving threads made of a degradable material; and the first structure is provided with at least one connecting element, and the second structure comprises parabolas formed by a plurality of bent threads, and is provided with a size-adjustable contractile opening at the one end of the second structure away from the middle portion. The implant overcomes the defects in the prior art to solve the problem that the degradable thread material is difficult to be shaped into an occluder due to the softness thereof, thus avoiding complications unique to metallic devices caused by an metallic occluder due to the material characteristic thereof.

Abstract: A method for modifying a gliadin and an application thereof are provided. The method includes the following steps: dissolving the gliadin in a solvent to obtain gliadin solution; and adding a proline endoprotease to the gliadin solution for a reaction, and adjusting the pH value of solution to neutral according to a gradient, to obtain a modified gliadin. The modified gliadin obtained by the present invention may be uniformly dispersed in water, and may still maintain a uniform dispersion state in the water after high-temperature thermal sterilization and long-term storage, or even in the presence of sodium chloride, it has good thermal stability, salt resistance, and storage stability.

Abstract: Disclosed is an occluder made of a degradable material and including a net-shaped framework and a locking member. The net-shaped framework includes an upper disc surface, a waist part, and a lower disc surface. The lower disc surface is provided with a melt tail end and a limiting through hole formed therein. The locking member includes a tensioning part having a diffusion end and a contraction end, and a locking part. The diffusion end is connected to the upper disc surface. The contraction end is connected to the locking part. A locking ring is provided at the proximal end of the locking part. The diameter of the locking ring is greater than that of the distal end of the through hole. The locking ring can be slotted into/penetrate out of the through hole by means of deformation. The occluder does not easily fall off and has a good occlusion effect.

Abstract: The application discloses a bone conduction acoustic device, a method for assembling bone conduction acoustic device and a bone conduction earphone. The bone conduction acoustic device includes: a case, which includes a base case portion and a side case portion connected with the base case portion, a cavity with an opening at one end is formed between the base case portion and the side case portion; a cover connected to the side case portion and sealing the opening; the magnet assembly connected to the cover and located in the cavity; a voice coil assembly arranged in the cavity, and voice coil assembly part is arranged opposite to the magnet assembly part for driving the magnetic assembly to vibrate; and a circuit board arranged in the cavity and electrically connected to the voice coil assembly, the circuit board is located between the base case portion and the voice coil assembly.

Abstract: A mobile device implements an inter-device inter-process communication (IPC) mechanism by which services on each device in a cluster group may be accessed by other devices in the cluster group using intra-device IPC calls. The inter-device IPC mechanism extends the existing intra-device IPC mechanism so that it may be used by existing applications across devices in the cluster group with little or no modification to the applications. A mobile device establishes pseudo-tokens for objects on the mobile device and pseudo-handlers for objects on the other devices. A mobile device may access multiple objects on other devices and may provide multiple other devices with access to a local object. Each object accessed via an inter-device IPC call is associated with a respective service adapter in a respective communication service gateway of each of the participating devices.

Abstract: The present application discloses an occluder, including a distal disc, a waist portion, and a proximal disc which are formed in sequence. The proximal disc includes a proximal disc surface. A proximal bending area is formed at a circumference of the proximal disc surface and bent towards the distal disc, where the proximal bending area surrounds an edge of the distal disc, and a stabilizing wire is further threaded through a free end of the proximal bending area and may tighten the free end of the proximal bending area towards the waist portion.