19results about How to "Barrier effect" patented technology

The invention provides an intersecting shield interval protection construction method, which belongs to the technical field of building construction, and comprises the following steps: firstly, excavating an open cut foundation pit at an intersection, arranging a cast-in-situ bored pile and a crown beam as an enclosure structure in the foundation pit, and arranging a steel support system at the same time. And after the enclosure structure is completed, the foundation pit is excavated to the designed depth, and reinforced concrete supporting piles and pile top beams are constructed. And on the basis, a reinforced concrete protection plate is poured to form a sheet pile structure type protection structure system. And finally, foundation pit filling is completed in a backfilling mode. Before the shield passes through the cross point, a test section is arranged to collect related construction data, and preparation is made for subsequent formal tunneling. And in the actual shield tunneling process, the tunneling speed and the soil bin pressure are controlled, and synchronous grouting is conducted. And after crossing the cross point, arranging closed rings in the front and back areas, and carrying out wall back grouting by adopting double-liquid slurry. And finally, a geological radar is used for detecting the cavity and repairing, and the problem of mutual influence in up-down close-distance crossed tunnel construction is solved.

The invention relates to a herbicide composition and a preparation method thereof, and relates to the technical field of agricultural herbicides, and the herbicide composition is prepared from the following raw materials in parts by mass: 40-50 parts of a herbicide drug-loading system, 3-5 parts of carbon black, 0.5-1 part of an anti-ultraviolet agent, 0.5-1 part of an antioxidant, 5-15 parts of a compound high-dispersity emulsifier and 10-15 parts of filler. The preparation method comprises the following steps: mixing carbon black, an anti-ultraviolet agent, an antioxidant and a filler, uniformly stirring, adding a herbicide loading system and a compound high-dispersity emulsifier, and uniformly stirring to obtain a mixture; and carrying out mechanical pulverization and airflow pulverization on the mixture, drying, screening and packaging to obtain the herbicide composition. The herbicide composition has the effect of improving the stability of the herbicide composition, the decomposition rate of the herbicide can be effectively reduced, and the weeding effect of the herbicide composition is improved.

The invention belongs to the technical field of papermaking, and provides a modified bacterial cellulose stabilized ASA sizing agent emulsion. The TEMPO oxidized bacterial cellulose nanofiber suspension and the silver ammonia solution are heated to react, and TBC-coated Ag is obtained; dropwise adding TEOS (tetraethyl orthosilicate) into the ethanol dispersion liquid of the TBC (at) Ag, stirring and reacting to obtain TBC (at) Ag (at) SiO2; aSA is added into the TBC (at) Ag (at) SiO2 aqueous dispersion to be sheared and emulsified, and the modified bacterial cellulose stabilized ASA sizing agent emulsion can be obtained. The prepared ASA emulsion can effectively block the influence of environmental factors on the emulsion, the interface stability of the emulsion is remarkably improved, no additional surfactant needs to be added, the sizing process is simpler and more convenient, the long-term stability of the ASA emulsion is effectively improved, a water phase and an oil phase are prevented from being separated, and the water resistance, the antibacterial property and the ultraviolet resistance of paper are improved.

The utility model relates to the technical field of intelligent transportation, concretely relates to high -speed toll station vice node railing machine, including railing machine body, set up on railing machine body and show module of fee of snapshot module and, snapshot module and show module of fee set up in the one side of railing machine body front end facing the lane transaction area, be provided with communication module in the railing machine body, this communication module is used for with ETC lane antenna carries out data interaction, and the transaction data of lane antenna is received through communication module and is shown through show module of fee of railing machine body, the lower extreme of pole machine body is provided with base, and the fixed part of base and setting in the bottom of railing machine body is connected in sliding fit, and the bottom of base is the sliding fit connection of sliding slot and sliding rail, the utility model relates to a kind of high -speed toll station vice node railing machine, solve the problem that multiple stand, construction complex caused by traditional ETC lane snapshot and fee show device independent setting, railing machine is simultaneously realized convenient installation and position adjustment by sliding base.

The invention provides a photolithography coated high-nickel ternary positive electrode material and a preparation method thereof, and belongs to the technical field of lithium ion battery positive electrode materials, and the preparation method comprises the following steps: carrying out wet spraying coating on LiNixCoyMn1-x-y-wZrwO2 matrix powder by using a conductive photoresist as a modifier to obtain a coated product, and under the protection condition of an oxygen atmosphere, carrying out wet spraying coating on LiNixCoyMn1-x-y-wZrwO2 matrix powder to obtain the high-nickel ternary positive electrode material. And sequentially carrying out exposure reaction, washing and developing treatment, drying, sieving and iron removal on the coated product by utilizing illumination or thermal radiation to obtain the conductive polymer coated high-nickel ternary positive electrode material. According to the invention, the advantages of good conductivity and stable structure of the conductive polymer are fully utilized, so that the problem of migration resistance of Li < + > on a material interface is reduced in the high-current charging and discharging process of the battery, and dissolution of metal particles on the surface of the material and surface side reaction are inhibited; the obtained high-nickel ternary positive electrode material crystal coated with the conductive polymer is high in first discharge efficiency, good in rate capability and cycle performance, and simple in process operation.

The utility model provides a smoke exhaust window for a building, which belongs to the technical field of fire-fighting doors and windows, and comprises a door frame and a smoke exhaust window, the door frame is fixedly connected with a wall body, the door frame is of a rectangular structure, the smoke exhaust window is embedded in the door frame, a fireproof layer is fixedly connected on the smoke exhaust window, and the fireproof layer is fixedly connected with the smoke exhaust window. The inner side of the door frame is rotationally connected with a turnover mechanism, the turnover mechanism is rotationally connected with the smoke exhaust window through a pin shaft, the smoke exhaust window is used for exhausting smoke from the interior of a building, the turnover mechanism is used for rapidly opening the smoke exhaust window, and the turnover mechanism comprises a first lantern ring, a second lantern ring, a third lantern ring, a fourth lantern ring and a supporting rod. The first lantern ring and the second lantern ring are rotationally connected with the upper top face of the door frame, the third lantern ring and the fourth lantern ring are rotationally connected with the lower bottom face of the door frame, and the problem that the smoke exhaust size of an existing smoke exhaust window is limited by opening of the window, and the smoke exhaust effect is affected can be solved.

The invention discloses a weak trace extraction instrument based on a multiband light source and color separation photography, and relates to the technical field of trace collection, the weak trace extraction instrument comprises a box body, an extraction port is arranged below the box body, a shooting port is arranged above the box body, and a color separation structure is arranged between the shooting port and the extraction port; a multi-band light source structure is arranged in the box body and is suitable for irradiating the position of the extraction opening; the color separation structure comprises a switching disc and a first rotating motor, a plurality of photographing holes are formed in the switching disc, a color filter is arranged on at least one photographing hole, and the photographing holes are suitable for covering the photographing opening. According to the scheme, dark field shooting is realized by designing and manufacturing a dark field, and meanwhile, a color separation shooting system capable of automatically replacing a filter lens and a multi-band light source system are added. According to the principle of'same-color passing and different-color absorption 'of colored light by a color filter, spectral components of a light source are selected and controlled, so that the effect of weakening or eliminating interference of background patterns on traces is achieved, and detail features which can be distinguished by naked eyes are obtained.

The utility model relates to the technical field of submerged arc furnaces, and discloses a circulating water-cooling slag flushing nozzle of a submerged arc furnace, which comprises the ground and a chute arranged on the ground and positioned below a front cover of the submerged arc furnace, a splash-proof cover positioned above the chute is fixed on the front cover through a locking bolt, and the slag flushing nozzle is arranged on the splash-proof cover; the slag flushing nozzle comprises a water-cooling liquid inlet pipe and a slag flushing flat nozzle communicated with the water-cooling liquid inlet pipe, the outer side face of the water-cooling liquid inlet pipe is sleeved with a spiral circulating water pipe, the contact area of water flow and cooling equipment can be increased through the design of the spiral circulating water pipe, heat exchange between water and the equipment is enhanced, the temperature of the slag flushing nozzle is effectively reduced, and the service life of the slag flushing nozzle is prolonged. Due to the arrangement of the slag flushing flat nozzle and the installation of the splash-proof cover, the splashing and spraying of slag flushing liquid can be avoided, and the risk of injury to equipment and workers is reduced.

This application relates to a method for fabricating a high-temperature co-fired thermal conductivity measurement sensor and the sensor itself, belonging to the field of sensor technology. This application utilizes an integrated co-fired structure of a metal thick-film pattern and a ceramic green body, enabling the metal thick-film pattern to form a continuous transition interface with the ceramic substrate during sintering. This results in high interfacial bonding strength, effectively mitigating failure problems such as interface delamination, warping, or cracking that easily occur under high-temperature or thermal cycling conditions, thereby improving the structural stability and service life of the sensor. Simultaneously, the co-fired structure effectively blocks the influence of external oxidizing or corrosive samples on the metal layer, making it suitable for complex or extreme testing environments. Since the co-firing process eliminates the bonding layer, this invention reduces the interfacial thermal resistance of Joule heat transfer to the sample during measurement, making the transient temperature rise response more closely match the theoretical heat transfer model, thereby improving the accuracy of thermal conductivity measurement.

The invention discloses a metering box with an intelligent temperature control function and a working method thereof.The metering box with the intelligent temperature control function comprises a box shell and an electric energy control metering component and further comprises an inner heat insulation plate, a ventilation mechanism, a controller and a temperature sensor, the inner heat insulation plate is laid on the inner wall of the box shell, and the ventilation mechanism is laid on the inner wall of the box shell; shutters are arranged on the two side walls of the box shell, and fixed ventilation openings are correspondingly formed in the positions, corresponding to ventilation seams of the shutters, of the inner heat insulation plate; the ventilation mechanism can open or close the fixed ventilation opening; the controller and the temperature sensor are arranged in a cavity of the box shell, and the controller collects signals of the temperature sensor and controls the ventilation mechanism to act. The inner heat insulation plate is arranged on the inner side of the box shell, the situation that the metering box changes along with the environment temperature is improved, and meanwhile the ventilation mechanism is arranged for cooling.

The invention discloses a wound ointment, which belongs to the technical field of traditional Chinese medicines and comprises the following components in parts by weight: 2-4 parts of catechu, 30-60 parts of radix clematidis, 10-20 parts of bighead atractylodes rhizome, 45-50 parts of astragalus membranaceus, 4-6 parts of dragon's blood and 100 parts of white vaseline. The trauma ointment is prepared through reasonable compatibility, screening and preparation of the selected traditional Chinese medicines for many years, can rapidly permeate into the deep layer of skin, has the effects of clearing away heat and toxic materials, preventing corrosion and promoting tissue regeneration, promoting blood circulation to remove blood stasis, activating tissue regeneration and memory ability and preventing scar generation, and has a remarkable curative effect after being clinically used by more than ten thousands of patients suffering from knife wounds, scalds and bedsores with different degrees. The effective rate is 96%, the cure rate is 98%, no pain is caused in the whole treatment process, infection is resisted, necrotic tissue is removed, tissue regeneration is promoted, and wound healing is rapid.

The invention discloses a sample preparation method for evaluating single-side performance of a product. The sample preparation method comprises the following steps: S1, providing a test sample of which the performance is to be evaluated and drying the test sample; wherein the test sample has a first surface and a second surface which are opposite to each other, the first surface is used for performing product performance evaluation, and the second surface does not perform product performance evaluation; s2, sealant with a certain thickness is arranged on the second surface, the total area of the sealant is smaller than the area of the second surface, and the sealant is arranged along the periphery of the second surface; s3, a water blocking film is arranged on the sealant, the water blocking film is used for shielding the second surface, and the water blocking film is not in contact with the second surface; and S4, after curing, preparing an evaluation sample for evaluating the single-side performance of the product. According to the evaluation sample prepared by the invention, the sealant and the water-blocking film can be completely removed after the test process is completed, and the sealing material is fully removed, so that the original state of a glass product is reduced, and the accuracy of a performance evaluation result is not influenced.

The present invention provides a steam turbine independent control steam extraction regulating valve, comprising three independently installed and jointly working first valves, second valves and third valves, the second valve is a normally open valve, the first valve and the third valve are normally closed valves with the same structure; the first valve comprises a valve seat, a valve body, a guide valve sleeve, a guide rod and a valve head, the valve seat is a hollow sleeve structure; the lower part of the valve body is fitted with a clearance to extend into the valve seat and corresponds to the upper part of the valve body; the upper part of the valve body is provided with a guide rod coaxial with the valve seat and sliding up and down through the guide valve sleeve; the lower part of the valve body is provided with a valve head which is installed and connected to the lower end of the guide rod to slide in and out of the valve body and whose lower part is in contact and sealed with the inner hole of the lower part of the valve seat; the upper end of the guide rod extends out of the guide valve sleeve and is connected to the oil motor through a coupling. The present invention provides a steam turbine independent control steam extraction regulating valve, which coordinates the steam flow through three sets of valves arranged compactly side by side to meet the operation requirements of the steam turbine under different working conditions.

This utility model relates to the technical field of industrial silicon smelting equipment, specifically to an in-furnace resistance temperature measuring frame for industrial silicon smelting, comprising a furnace body, a support structure, a heat dissipation and protection structure, and an electrode measuring structure; the support structure includes an L-shaped support base and a connecting plate, one side of which is fixedly connected to the support base via a heat insulation plate, and an electric telescopic rod is fixedly mounted on top of the support base; the heat dissipation and protection structure is a heat insulation shell, which wraps around the support base and the electric telescopic rod, and the top of the heat insulation shell is connected to a heat dissipation channel extending to the outside of the furnace body; the electrode measuring structure includes an electrode rod, an electrode head, and a connecting frame, with the extended end of the electric telescopic rod fixedly connected to the top of the connecting frame, a rotating ring rotatably connected to the middle of the connecting frame, and the outer side of the rotating ring fixedly connected to one end of the electrode rod via a connecting lug, and the other end of the electrode rod fixedly connected to the electrode head.

The utility model discloses a connecting structure of an intelligent self-sensing meal cover, and mainly relates to the field of food covers. Comprising a supporting cover, a first support arranged on the supporting cover and a transparent cover rotationally connected with the first support. The supporting cover is placed on the top face of a container used for containing dishes, the transparent cover and the supporting cover define a hemispherical structure, the first support is provided with a mounting groove, a shaft hole is reserved in the mounting groove, a driving assembly is arranged in the mounting groove, and the driving assembly drives the transparent cover to rotate with the supporting cover as the circle center. The intelligent self-sensing meal cover has the advantages that the intelligent self-sensing meal cover is used for driving and connecting the two cover bodies, when the intelligent self-sensing meal cover is opened and closed, the whole rotating process is stable, shaking is avoided, and the influence of steam generated by dishes on a sensor can be blocked.

The invention belongs to the technical field of H2 receptor antagonistic drug preparations, and particularly relates to a stable famotidine calcium magnesium chewable tablet and preparation thereof. The famotidine calcium magnesium chewable tablet is prepared from famotidine, agilawood tetrol, oleic acid, calcium carbonate, magnesium hydroxide, a filling agent, a disintegrating agent, a flavoring agent, a lubricating agent and ethyl alcohol. According to the famotidine calcium-magnesium chewable tablet, the surface of famotidine particles is coated with the agilawood tetrol-oleic acid blend to serve as a protective barrier, the influence of external environmental factors on famotidine is blocked, hydrolysis and oxidation reactions are reduced, and therefore the stability of the famotidine calcium-magnesium chewable tablet is improved.

This application relates to the field of display technology, and more particularly to a thin film and its preparation method, a light-emitting device, and a display apparatus; wherein the thin film includes a first sublayer and a second sublayer stacked thereon; wherein the first sublayer is made of a first material and a second material, and the second sublayer is made of a second material; in the first sublayer, at least a portion of the first material fills the gaps between at least a portion of the second material. This application, by using the first material to separate at least a portion of the second material, can effectively block the influence of water and oxygen permeation on the second material, reduce the aggregation of the second material, and improve the stability of the film layer.

The invention discloses a cadmium-polluted farmland remediation method, which relates to the technical field of soil pollution treatment and environmental remediation, and mainly comprises the following steps: S1, dividing a cadmium-polluted land into a plurality of operation land parcels; s2, any one of the operation plots is divided into layered soil not smaller than three layers from top to bottom according to the cadmium content, the first layer of soil is cadmium-contaminated soil, the last layer of soil is clean soil, and the middle layer of soil is buffer layer soil; s3, the multiple layers of soil of the first operation land parcel are dug out in sequence to form pit slots, and the multiple layers of soil are stored separately; s4, the multiple layers of soil of the next operation land parcel are dug out in sequence to form pit slots, and the multiple layers of soil are inversely backfilled into the pit slots of the previous operation land parcel; and S5, the step S4 is repeated till backfilling of all the operation land parcels is completed. The method has the advantages of being high in operability, free of secondary pollution, economical and efficient, the problem of cadmium pollution of plots can be thoroughly solved, and the workload is small.