Abstract: A data interaction method is applied to a first member node of a first alliance network including an operation node and a plurality of member nodes. The method includes: encrypting first interaction data based on a public key of the second member node to obtain first encrypted data; signing the first interaction data and/or the first encrypted data based on a private key of the first member node to obtain first signed data; generating a first access token for a first node based on the first encrypted data and a first initial access token for the first node; generating a first request message for data interaction based on the first encrypted data, the first signed data and the first access token; and sending the first request message to the first node.

Abstract: The present disclosure relates to a solvent-free moisture curing silicone conformal coating used for the surface protection of circuit boards in the electrical and electronic industries and a preparation method thereof. The solvent-free moisture curing silicone conformal coating comprises (A) a hydrolyzable functional group-terminated linear polysiloxane (I); (B) a hydrolyzable functional group-containing silicone resin with a three-dimensional structure (II); (C) a hydrolyzable functional group-containing crosslinking agent; (D) a catalyst; (E) an adhesion promoter. The solvent-free conformal coating of the present disclosure has low viscosity, high strength and good toughness, and can meet the traditional coating process such as spraying, brushing, dipping, etc., while satisfying the surface protection of the circuit board.

Abstract: A data processing method includes: generating respective private key information of M participants; performing a shard operation on the respective private key information of the M participants according to a predetermined shard operation protocol to obtain key information; encrypting plaintext data of each of the M participants using the key information to obtain respective ciphertext data of the M participants; and performing computation on the respective ciphertext data of the M participants to obtain a data computation result for the M participants.

Abstract: An echo filtering method, an electronic device, a computer-readable storage medium, and an echo filtering apparatus are disclosed. The electronic device includes M microphones and N speakers. M and N are integers greater than 1. The method includes: obtaining N speaker signals corresponding to the N speakers; obtaining M microphone signals corresponding to the M microphones; and performing at least direct sound filtering on the N speaker signals and the M microphone signals to obtain a target signal. By using this method, better echo filtering effect can be obtained.

Abstract: A data interaction method is applied to a first member node of a first alliance network including an operation node and a plurality of member nodes. The method includes: encrypting first interaction data based on a public key of the second member node to obtain first encrypted data; signing the first interaction data and/or the first encrypted data based on a private key of the first member node to obtain first signed data; generating a first access token for a first node based on the first encrypted data and a first initial access token for the first node; generating a first request message for data interaction based on the first encrypted data, the first signed data and the first access token; and sending the first request message to the first node.

Abstract: A fresh product cold chain distribution device and a distribution method are provided. The fresh product cold chain distribution device comprises a self-service pickup cabinet and at least one refrigeration logistics box; the self-service fresh product pickup cabinet comprises a cabinet body, an air channel cover panel, a scanner, a touch display screen, a power supply plug, and a control panel; the self-service fresh product pickup cabinet is internally provided with an air circulation system consisting of an exhaust channel, exhaust holes of the self-service pickup cabinet unit cell, exhaust holes of the exhaust channel, an inlet channel, inlet holes of the inlet channel, and inlet holes of the self-service pickup cabinet unit cell; the cabinet body comprises a plurality of unit cells; the refrigeration logistics box comprises a box body, a quick-connection plug board, a refrigeration device, a temperature selection switch, and an identification.

Abstract: The present disclosure relates to a solvent-free moisture curing silicone conformal coating used for the surface protection of circuit boards in the electrical and electronic industries and a preparation method thereof. The solvent-free moisture curing silicone conformal coating comprises (A) a hydrolyzable functional group-terminated linear polysiloxane (I); (B) a hydrolyzable functional group-containing silicone resin with a three-dimensional structure (II); (C) a hydrolyzable functional group-containing crosslinking agent; (D) a catalyst; (E) an adhesion promoter. The solvent-free conformal coating of the present disclosure has low viscosity, high strength and good toughness, and can meet the traditional coating process such as spraying, brushing, dipping, etc., while satisfying the surface protection of the circuit board.

Abstract: Disclosed are a testing device and a testing method for adhesive strength of an inner hole coating. A pull rod of the testing device for the adhesive strength of the inner hole coating may apply an axial tension to the inner hole coating via a guide ring and an assisting assembly, and may also apply radial pressure to the inner hole coating via a tapered surface and the assisting assembly. And the press rod may apply a radial tension to the inner hole coating via the pull hook and the assisting assembly. The testing method for the adhesive strength of the inner hole coating adopts the above-mentioned testing device for adhesive strength of an inner hole coating, a tensile adhesive strength test and a shear adhesive strength test may be performed on a same device.

Abstract: A connecting device is configured to connect a spray gun and a spray device. The connecting device includes a balance adjusting assembly, a rotation radius adjusting assembly, a driving assembly and a docking assembly. The balance adjusting assembly includes a fixing plate and a slide block configured to slide in a dovetail groove of the fixing plate. The rotation radius adjusting assembly includes a slide seat slidably connected with the balance adjusting assembly. The driving assembly includes a screw assembly configured to drive the slide block and the slide seat to move synchronously toward or away from each other. The docking assembly is detachably connected with the rotation radius adjusting assembly and connected to the spray gun.

Abstract: Disclosed are a testing device and a testing method for adhesive strength of an inner hole coating. A pull rod of the testing device for the adhesive strength of the inner hole coating may apply an axial tension to the inner hole coating via a guide ring and an assisting assembly, and may also apply radial pressure to the inner hole coating via a tapered surface and the assisting assembly. And the press rod may apply a radial tension to the inner hole coating via the pull hook and the assisting assembly. The testing method for the adhesive strength of the inner hole coating adopts the above-mentioned testing device for adhesive strength of an inner hole coating, a tensile adhesive strength test and a shear adhesive strength test may be performed on a same device.

Abstract: A method and a sensor for detecting L-cysteine based on a 3,3?-dithiobis (1-propanesulfonate)-mercury composite membrane are provided.

Abstract: A method and a sensor for detecting L-cysteine based on a 3,3?-dithiobis (1-propanesulfonate)-mercury composite membrane are provided.

Abstract: Zirconia dental ceramics exhibiting opalescence and having a grain size in the range of 10 nm to 300 nm, a density of at least 99.5% of theoretical density, a visible light transmittance at or higher than 45% at 560 nm, and a strength of at least 800 MPa.

Abstract: Provided are a quickly installed connecting device and an internal plasma spraying system. The connecting device is configured to connect a spray gun and a spray device. The connecting device includes a balance adjusting assembly, a rotation radius adjusting assembly, a driving assembly and a docking assembly. The balance adjusting assembly includes a fixing plate and a slide block configured to slide in a dovetail groove of the fixing plate. The rotation radius adjusting assembly includes a slide seat slideably connected with the balance adjusting assembly. The driving assembly includes a screw assembly configured to drive the slide block and the slide seat to move synchronously toward or away from each other. The docking assembly is detachably connected with the rotation radius adjusting assembly and connected to the spray gun.

Abstract: Zirconia dental ceramics exhibiting opalescence and having a grain size in the range of 10 nm to 300 nm, a density of at least 99.5% of theoretical density, a visible light transmittance at or higher than 45% at 560 nm, and a strength of at least 800 MPa.

Abstract: The present specification discloses methods for scanning objects for the presence of lithium batteries. Normalized transmission X-ray data is used to generate organic, effective Z, and attenuation-based images. These images are then segmented using a combination of thresholding and region growing techniques to identify regions of interest. The regions are classified as lithium batteries or other objects, based on characteristics such as area of the region, its organic intensity, Zeff number, shape, spatial arrangement and texture.