8results about How to "Reduce repair" patented technology

The present invention discloses a fine risk assessment method for coupling environmental equity and effective dose, comprising the following steps: step one, obtaining the concentration of pollutants in soil; step two, constructing a conceptual model of the site; step three, identifying key exposure pathways: taking the highest detected concentration of the pollutants of concern in the soil as the exposure concentration, preliminarily calculating the proportion of the health risks of the pollutants of concern under different exposure pathways to the total health risks of the pollutants of concern under all exposure pathways, and identifying the exposure pathway with the highest proportion as the key exposure pathway; step four, calculating the health risk value of the pollutants of concern in the soil: step five, calculating the acceptable risk level under the key exposure pathways of the pollutants of concern; step six, assessing the health risks of the pollutants of concern in the soil. Under the primary goal of ensuring the safe use of construction land, this method takes into account the principle of environmental equity, further reduces the uncertainty and conservatism of the assessment results, reduces unnecessary repairs, and achieves source reduction and carbon reduction.

The invention discloses a cutting blade service life testing device with a dust removal function, and relates to the technical field of cutting equipment.The cutting blade service life testing device comprises a machine body, a material storage box, a cutting machine, a cutting blade and a metal bar, the material storage box is placed on one side of the machine body, the cutting blade is fixedly connected to the bottom end of the cutting machine, the cutting machine is arranged in the machine body, and the metal bar is arranged in the machine body. Through the design of the service life testing assembly, the service life of the cutting blade can be effectively tested; through pressure value feedback of the pressure sensor on the S-shaped piece, the service life of the cutting blade can be indirectly known, the cutting quality is improved, and the flatness of a cutting surface is guaranteed; the service life of the cutting blade is tested by monitoring the counter-acting force borne by the cutting blade, and the abrasion condition of the cutting blade can be found in time; when the counter-acting force is too large, it is indicated that the cutting blade is seriously abraded at the moment, the cutting blade is replaced or maintained in time, the cutting blade which is excessively abraded is prevented from being used for cutting, and therefore the flatness of the cutting face is guaranteed.

This invention discloses a panoramic image stitching and restoration system and method based on feature matching, relating to the field of image processing technology. The system includes capturing images and collecting image capture information; numbering the images based on the collected image capture information; matching feature points of two adjacent numbered images to obtain image feature information; mapping the image numbers and image feature information to a Cartesian coordinate system in stages; setting a triple planning mechanism based on the staged mapping information; planning the image stitching order based on the triple planning mechanism; performing image stitching processing according to the planned image stitching order; and performing restoration processing on the stitched panoramic image. This achieves automated planning of the optimal image stitching order, reduces the accumulation of image stitching errors, and minimizes the impact of poor image stitching quality on subsequent image restoration effects.

The invention relates to the technical field of nursing materials, and discloses eye washing liquid for relieving eye fatigue and a preparation method thereof.The eye washing liquid is prepared from trehalose, taurine, sodium gualenate, sodium hyaluronate, ergothioneine, vitamin B12, vitamin B6, xanthophyll, mint, a humectant, a bacteriostatic agent, a chelating agent, a pH regulator and deionized water. Through the synergistic effect of the first synergistic composition and the second synergistic composition, retina cell injury induced by blue light can be effectively repaired, the repairing effect is superior to that of simple addition of a single component, blue light oxidative injury is repaired through a multi-target synergistic mechanism, a three-layer structure of a tear film lipid layer, a water layer and a mucoprotein layer can be reconstructed, and the repairing effect is good. According to the present invention, the tearable film stability is significantly improved, the excellent protection and repair effect is provided, the compatibility of the components is good, the product stability is high, and the multiple effects of ocular surface cleaning, asthenopia relieving, conjunctival congestion reducing and blue light oxidation damage preventing are provided.

The utility model discloses a subway direct current traction power supply equipment protection insulating terrace structure relates to subway power supply safety technical field, including insulating terrace surface, the surface of insulating terrace surface is coated with epoxy resin, and the bottom of insulating terrace surface is provided with bakelite insulating plate, and the below of bakelite insulating plate is sequentially provided with moisture-proof board and water passing board, the water passing board is located the below of moisture-proof board, and the bottom of water passing board is installed with frame board. The utility model discloses, when using, the bottom of bakelite insulating plate is provided with high temperature resistance layer and heat insulating layer, and high temperature resistance layer can make insulating board still keep good insulating property during high temperature use, and the setting of heat insulating layer insulates the heat above insulating board, prevents the moisture below moisture-proof board from heat influence equipment normal resistance electricity, and heat insulating layer can also prevent the equipment below moisture-proof board from rusting and rotting, prolongs the service life of equipment, reduces the possible of equipment repair.

The invention provides recombinant humanized collagen as well as an expression system and application thereof, and belongs to the technical field of active raw material development. The problems that in the prior art, an eukaryotic expression system is low in production efficiency, high in cost and insufficient in biological activity are solved, efficient secretion and soluble expression of the IV type collagen recombinant protein are achieved through the prokaryotic host cell, the production efficiency is remarkably improved, the cost is remarkably reduced, the prepared recombinant protein can effectively inhibit tyrosinase activity, and the recombinant protein can be used for preparing the recombinant protein. The composition provided by the invention can promote HSF cell growth, proliferation, differentiation and migration, improves the content of type I collagen, has obvious whitening, repairing and anti-wrinkle effects, and provides a new efficient active component for food, medicine and cosmetic industries.

This utility model relates to a stroller controller with a timed shutdown function, comprising a housing and a circuit board. The circuit board is installed inside the housing, and multiple buttons are located on the top of the housing. The circuit board includes a main control MCU module, a power supply module, a power switch and drive module, a button backlight display module, and a lighting control module. The main control MCU module is electrically connected to the power supply module, the power switch and drive module, the button backlight control module, and the lighting control module. The power supply module provides power to the circuit board. The power switch and drive module controls the stroller's power on / off and the stroller motor's movement. When the stroller remains inactive for the designated shutdown time, the main control MCU module sends a command to the power switch and drive module, which then shuts off the stroller. This effectively reduces the risk of spontaneous combustion, improves safety, significantly extends battery life, avoids damage from over-discharge, reduces the number of battery charging cycles, and improves energy efficiency.

The present invention discloses an erosion-resistant sealing structure of a regulating valve, characterized in that it comprises a valve body, a valve seat, a valve core, and a sleeve matched with the valve core, wherein a flow channel for medium to pass through is provided in the valve body, wherein the flow channel comprises an inflow section, a buffer section, a valve cavity section, and an outflow section, wherein the cross-sectional area of ​​the buffer section is larger than the cross-sectional areas of the inflow section, the valve cavity section, and the outflow section, wherein a valve seat is provided at the outlet of the valve cavity section, wherein the sleeve is provided in the buffer section, wherein the valve core is provided in the valve cavity section and the sleeve, wherein the bottom end of the valve core is located at the outlet of the valve cavity section, wherein the bottom end of the valve core and the outlet of the valve cavity section are contacted with the valve seat through the bottom end of the valve core to form a sealing surface, wherein an axial protrusion structure is provided at the bottom end of the valve core, wherein the axial protrusion structure protrudes from the bottom end of the valve core and is located in the valve seat and matches the valve seat. The present invention can effectively reduce the direct erosion effect of the medium on the sealing surface of the valve core, protect the integrity of the sealing surface of the valve core, and extend the service life of the valve core.