4results about How to "Guaranteed Diffusion Effect" patented technology

The invention discloses an image encryption method based on a new non-adjacent dynamic coupling mapping lattice and cross scrambling. The method comprises the following steps: acquiring an image to be processed; preprocessing an image to be processed to obtain parameters and initial values required by an encryption process; generating a chaotic sequence based on the parameters and the initial value required by the encryption process; adopting a cross traversal algorithm, selecting different central points and traversal directions of the image to perform preliminary scrambling on positions of image pixels, and obtaining an initial scrambling image; a random cross transformation algorithm is adopted to perform scrambling and diffusion operation based on the initial scrambling image, the pixel position of the image is changed, the pixel value of the image is preliminarily changed, and a semi-encrypted image is obtained; and carrying out secondary diffusion on the semi-encrypted image by adopting a bidirectional disturbance index diffusion algorithm to obtain an encrypted image. According to the method, corresponding attacks can be effectively resisted, and good safety is achieved; and the time efficiency is relatively high.

The invention discloses a high-diffusivity micro-fractured rock mass interface reinforcing grouting material and a preparation method thereof, and relates to the field of underground engineering fractured rock mass reinforcement, the grouting material comprises the following raw material components: a cementing material, an interface reinforcing agent and a modification additive; wherein the cementing material comprises the following components: superfine Portland cement; the interface reinforcing agent is prepared from the following raw material components: alkyl tertiary amine dihydric phosphate, beta-hydroxyalanine, 4-cyano valeric acid, tetrahydrofuran and ammonium chloride. The interface reinforcing agent is used for modifying the grouting material, when cement particles are blocked by micro-cracks, interface reinforcing components can further permeate into the micro-cracks, the diffusion performance of the grouting material is improved, and the problem that in the prior art, cement and other turbid liquid type grouting materials are poor in diffusivity in micro-crack rock mass is solved.

The present application relates to the field of battery production, and more particularly to a diffusion furnace for topcon battery production with uniform diffusion, comprising a furnace body and a furnace door thereon, a mixing bin is installed on the furnace body, a total gas inlet pipe is communicated and installed at the front end of the mixing bin, at least two groups of gas inlet branch pipes are communicated and installed on the total gas inlet pipe, and a stirring mechanism is arranged on the mixing bin, a connecting pipe is installed through between the chamber of the furnace body and the mixing bin, a cover is arranged in the mixing bin, and a power member is arranged on the mixing bin; a shunt bin is fixed in the chamber of the furnace body and is communicated and installed with the connecting pipe, a shunt hole is formed in the bottom wall of the shunt bin, and an adjusting mechanism is arranged in the shunt bin. By adding the total gas inlet pipe, the mixing bin and the stirring mechanism, each group of gas enters the total gas inlet pipe for preliminary mixing through the corresponding gas inlet branch pipe, and then enters the mixing bin for secondary mixing through the working of the stirring mechanism, which is beneficial to the full and uniform mixing of each gas and improves the subsequent diffusion effect.

The utility model relates to the technical field of bonding equipment provides a copper diffusion mechanism, including pressure mechanism and bearing cavity, the pressure plate of pressure mechanism sets up the top of bearing cavity, a plurality of pressure head posts of pressure plate sets up the lower part of pressure plate. Good contact is favorable to copper atom under the action of pressure more smoothly diffuses, improves the effect and consistency of diffusion.