425results about How to "Reduce dosage" patented technology

The invention discloses a rare-earth metal arylamine group compound as well as preparation method and application thereof. The invention discloses the rare-earth metal arylamine group compound which is characterized in that a general formula of the rare-earth metal arylamine group compound is (2,6-R12PhNH)5LnLi2(THF)2, wherein Ln is a rear-earth metal selected from one of neodymium, samarium, ytterbium or yttrium; R1 is selected from one of hydrogen, methyl or isopropyl. The rare-earth metal arylamine group compound has the advantages that the rare-earth metal arylamine group compound has a definite structure; raw materials used in the preparation method are simple, easily obtained and cheap; the reaction process is simple and easily operated; the rare-earth metal arylamine group compound product is conveniently purified and the yield of the product is high; the rare-earth metal arylamine group compound has a high activity when acting as a single component catalyst to catalyze a hydrogen phosphine reaction of aldehyde or ketone and phosphite ester; the use amount of the catalyst is less; the yield is high; a substrate has wide universality; a new and simple method is provided for synthesis of a-hydroxyphosphonate.

The invention relates to a preparation method of soybean oil base polyhydric alcohol, in particular to a method for preparing soybean oil base polyhydric alcohol by directly using soybean oil. The soybean oil diluted by using a solvent reacts with hydrogen peroxide with the weight percentage being 30% for 2-5 hours at the temperature of 60-70 DEG C under catalysis of a catalyst with the weight percentage being 3-5%; vacuum distillation is conducted after the reaction is ended, and the solvent is evaporated; then low alcohol is added in a reactor to be subjected to a reaction for 4-6 hours under the pressure of 0.3-0.4 MPa and at the temperature of 70-80 DEG C, then the reaction is stopped, and the soybean oil base polyhydric alcohol is obtained. The method saves the using amount of hydrogen peroxide, reduces the post-treatment steps, and simplifies the production procedures, and accordingly the product cost is declined directly.

This invention discloses a method for installing a grating sensor for wind turbine blade testing, comprising: positioning, marking, surface grinding, cleaning of the bonding surface, ablation treatment of the bonding surface, ablation cleaning of the bonding surface, ablation treatment of the sensor, ablation cleaning of the sensor, surface treatment of the bonding surface, bonding of the sensor, cleaning after bonding, installation of the outer surface protective layer, and fixing and protecting the connecting optical cable. Compared with existing processes, the sensor installed using the method of this invention has a longer service life, shorter installation time, and lower auxiliary material consumption, thereby improving the efficiency of wind turbine blade testing preparation and reducing labor and material costs.

This invention discloses a support structure and construction method for high-stress tunnels in Class II-III hard rock in the field of initial support technology for tunnel engineering. The tunnel is divided into multiple sections based on each cycle of excavation. These sections include steel-framed sections, which contain steel frames and anchor bolts, and are sealed with shotcrete. There are also non-steel-framed sections, which do not contain steel frames or anchor bolts, but are sealed with shotcrete. The steel-framed and non-steel-framed sections are arranged cyclically along the excavation direction. Multiple anchor bolts in the steel-framed sections are configured obliquely, so that the surrounding rock of the non-steel-framed section corresponds to the anchor bolts of two adjacent steel-framed sections. This changes the traditional steel-frame, full-anchor bolt support mode per cycle to "steel frame, anchor bolts across two cycles," reducing the amount of steel frames and anchor bolts by approximately 50%. The surrounding rock arch effect is fully utilized, using the rigid support points formed by adjacent supported sections to transfer the stress on the middle section of the surrounding rock to both sides, achieving overall stability.

This invention relates to a prefabricated 3D-printed box-type concrete retaining wall and retaining wall system. The prefabricated 3D-printed box-type concrete retaining wall is assembled from 3D-printed concrete retaining wall units. Each 3D-printed concrete retaining wall unit is an integrated 3D-printed concrete structure, consisting of an arched outer wall panel, a concave inner wall panel, and concave side wall panels, which enclose a cavity. A transverse keyway is formed between the concave side wall panels of adjacent 3D-printed concrete box-type retaining wall units. Shear keys are formed by casting cement-based material within the transverse keyway, enabling the combined load-bearing capacity of the 3D-printed concrete retaining wall units. Under the same loading conditions, the peak bearing capacity of the structure of this invention is significantly improved compared to traditional vertical box-type retaining walls, and the bearing performance is further enhanced under simulated backfill conditions, demonstrating good engineering applicability and green construction value.

This invention discloses a four-armed star-shaped polymer containing a polyoxyethylene structure, its preparation method, composition, and applications. The polymer is prepared by mixing an unsaturated organic carboxylic acid compound, an unsaturated sulfonic acid compound, and water, stirring to obtain a reaction solution, and continuously stirring and heating the reaction solution. An aqueous solution of a polyether macromonomer compound and the initiator aqueous solution are added to the heated reaction solution, followed by polymerization and purification. The polymer structure contains a large number of carboxyl groups, sulfonic acid groups, and ether groups, as well as abundant polyoxyethylene groups and alkyl chains, giving the polymer good water solubility and excellent chelating properties for metal ions. The polymer prepared by this method shows good effects in cleaning, defoaming, and scale inhibition. Furthermore, compositions formed by combining the polymer with other corrosion and scale inhibitors exhibit good compatibility and can be used for scale inhibition in high-hardness water.

The application belongs to the technical field of proton exchange membrane fuel cell, and relates to a hydrophobicity-adjustable alloy nanotube array electrode for fuel cell and preparation and application thereof. Specifically, the application comprises preparation of metal nanotube array, alloying and hydrophobization of the metal nanotube array, and assembly of the membrane electrode. First, a metal nanotube array is constructed on a substrate surface through a two-step hydrothermal method; then, a hydrophobic substance is introduced into the metal nanotube array by means of immersion or ultrasonic spraying; then, pyrolysis is performed to realize alloying and hydrophobization of the nanotube array; finally, the nanotube array is transferred to a proton membrane, and the membrane electrode is cleaned. The membrane electrode can be applied to a proton exchange membrane fuel cell. The hydrophobicity-adjustable nanotube array electrode prepared by the application has the advantages of high catalyst activity and stability, low platinum loading, good water management, and easy scaling-up.

The utility model provides a kind of immersion battery pack and cooling system belong to new energy battery field.The battery pack includes battery module and box, multiple flow channel plates are provided in the box, multiple flow channel plates are arranged at intervals, one end of flow channel plate is in abutment with the inner wall of box, and the other end is provided with electric core insulation sealing plate, battery module is arranged between two adjacent flow channel plates, one end of battery module is in abutment with the inner wall of box, and the other end is in abutment with electric core insulation sealing plate.A kind of immersion battery pack and cooling system provided by the utility model embodiment can solve the problem of large amount of immersion liquid and inconvenient installation in the prior art.

The application provides a coalescence-adsorption coupled binary hydrophilic-hydrophobic particle deep bed oil removal process and device, and the process comprises the following steps: S1, mixed liquid mixing and adsorption; S2, first coalescence separation of the mixed liquid; S3, second coalescence separation of the mixed liquid; and S4, recycling of emulsified oil containing DOM and adsorbent. The process of the application realizes efficient purification of oil-containing sewage containing DOM and emulsified oil through the steps of adsorbent dispersion mixing and two-stage binary hydrophilic-hydrophobic particle coalescence separation, in combination with a special device; the mixing effect of the adsorbent and the sewage can be strengthened, the DOM adsorption and emulsified oil demulsification efficiency can be improved, the adsorbent recycling and water phase purification can be realized at the same time, and the problems of incomplete treatment and low efficiency of existing oil removal technologies on multi-form pollutants are solved.

This utility model discloses a waterproof power adapter. The housing has an annular top step; the top step has an annular positioning groove, and the underside of the cover has an annular positioning ring wall that can fit into the positioning groove. The housing has an upward-extending annular surrounding wall outside the positioning groove. The annular surrounding wall, the top step, and the positioning ring wall form a sealing groove for injecting sealant. The housing has a connector for a power cord; the connector extends upward to connect to the sealing groove; the power cord's connector terminal can be inserted into the connector from above. This utility model, through the nested fit of the annular positioning groove and the positioning ring wall, combined with the innovative connection design between the sealing groove and the connector, achieves significant optimization in sealing performance, cost control, and assembly efficiency.

The application discloses a method for treating hydrogen sulfide in oil wells, which comprises the following steps: (1) screening of test oil reservoir; (2) preparation of specific virulent SRB phage stock solution; (3) enrichment of specific virulent SRB phage; (4) determination of optimal titer of specific virulent SRB phage solution; (5) selection of phage fusion bactericide; (6) determination of optimal intervention point of bactericide; (7) field test and effect evaluation. The application has the following advantages: (1) wide adaptability, simple method and good operability; (2) strong pertinence; (3) phage bactericidal action can prevent the generation of bacterial drug resistance and can prolong the use time of bactericide; (4) the cost is reduced by more than 50% compared with the prior art; meanwhile, the damage of bactericide toxicity to the formation is reduced, and the method is economic and environment-friendly.

The application provides a method for preparing methyl silicone oil by using organic silicon high ring, which directly prepares the methyl silicone oil by using cheap organic silicon high ring, and reduces the production period and cost of the methyl silicone oil. In the application, semi-continuous feeding is adopted, the viscosity of the processed methyl silicone oil is controllable, the molecular weight distribution is narrow, the product conversion rate is greater than 85%, compared with the traditional process, the reaction process is stable, the utilization rate of the end-capping agent is high, and the amount is less.

The present application relates to solid waste recycling technical field, provide a kind of based on coal-based solid waste's anti-dispersion grouting material and its preparation method and application, the material is made of coal gangue, fly ash, silica ash, cellulose, water reducing agent and alkali activator, wherein, alkali activator is made of deionized water, sodium hydroxide and water glass.The based on coal-based solid waste's anti-dispersion grouting material is prepared according to following steps: after mixing coal gangue, fly ash, silica ash, cellulose and water reducing agent, stirring treatment is carried out, and powder precursor is prepared;Alkali activator is added to the prepared powder precursor, and alkali activator is made of deionized water, sodium hydroxide and water glass, continue to stir to prepare the based on coal-based solid waste's anti-dispersion grouting material.The present application can prepare the anti-dispersion grouting material of excellent fluidity, stability and mechanical property, provides innovative path for the resource of coal-based solid waste, significantly reduces material cost, improves environmental benefits and engineering application value.

The application discloses a heat dissipation structure of an outdoor device and a centralized inverter integrated machine. The copper bar connected between an inverter and a transformer is connected with an internal cavity of an alternating current side of the inverter, heat generated by the copper bar is discharged to the inverter, and the heat exchanger in the inverter is used to discharge waste heat to the external environment. The heat dissipation problem of the copper bar connected between the inverter and the transformer and the connecting cavity is solved, and the cross-sectional size of the copper bar is reduced. The temperature of the copper bar connected between the inverter and the transformer and the connecting cavity is reduced, and the service life of internal devices is prolonged.

The present application discloses a kind of open coal mine shallow goaf exploration management method, including construction near horizontal exploration directional drilling and determine goaf boundary, determine whether there is governable cavity in goaf, if yes, then management, if not, then end work;Mark ground engineering safety area;In ground engineering safety area, construction is connected with goaf Inclined filling drill hole;In the inclined filling drill hole, laser radar is lowered into to obtain scanning result;According to scanning result, the number of inclined filling drill hole that needs to be drilled is determined, and the supplementary construction of inclined filling drill hole is completed;One inclined filling drill hole is used as gas discharge channel in goaf, and the rest of the inclined filling drill hole is used as goaf filling channel, and solid waste material is sprayed into goaf by gas jet filling system;After the end of solid waste material delivery, grouting is injected into goaf through inclined filling drill hole and near horizontal exploration directional drilling respectively and is cured;Through inclined filling drill hole, grouting is supplemented, and the exploration management of goaf is completed.

The application provides a preparation method of dihydroxy boron phenylalanine and intermediates thereof. The method comprises the following steps: mixing 4-halogen-Boc-L-phenylalanine of formula (II) with an alkyl borate, and adding a Grignard reagent to obtain an intermediate compound of formula (I): (I) (II).

The application provides a lens driving device, a camera module and an electronic device. The lens driving device comprises a fixed part, a moving part, a supporting assembly, a first driving structure and a second driving structure. The fixed part comprises a base and a shell. The moving part is used for carrying an optical lens. The supporting assembly comprises a shaft member and a first motion conversion piece. The shaft member is installed on the base. The first motion conversion piece is movably sleeved on the shaft member and connected with the moving part, so as to allow the moving part to move along a first linear direction through the first motion conversion piece relative to the shaft member. When the moving part is driven to move in a plane perpendicular to the first linear direction, the moving part can drive the shaft member to move in the plane relative to the fixed part. The first linear direction is parallel to the optical axis direction of the optical lens. The first driving structure is a piezoelectric driving structure. The number of parts of the lens driving device is significantly reduced, so that the material cost is reduced, the assembly process is simplified, and the product yield is improved.

This invention discloses a high-crack-resistant cement-fly ash stabilized base course material, belonging to the field of road engineering technology. The material comprises the following components by mass percentage: 2.0-3.0% cement, 16-20% fly ash, and the balance being stabilized aggregate. The cement is an external admixture, the fly ash is an internal admixture, and the gradation of the stabilized aggregate conforms to the specifications of CF-A-2L or CF-A-2S in JTG / T F20-2015. This invention, by adopting a "low cement, high fly ash" mix design, controls the 7-day unconfined compressive strength within a reasonable range of 3.5-4.5 MPa, effectively avoiding the problem of regular transverse cracks in the base course caused by excessively high early strength. Simultaneously, the high fly ash content ensures the continuous growth of the material's later strength, with its 21-day unconfined compressive strength remaining stable above 6 MPa. Its overall performance is superior to the mix ratios recommended by current standards. This invention is particularly suitable for highway base course construction in arid regions with large temperature differences, such as Xinjiang.

This invention discloses a carbon fiber double-double layup method for a composite material fuselage stringer structure. The stringer is fixed to the inside of the aircraft fuselage cylinder and adopts a carbon fiber double-double layup structure. First, the two angle parameters φ and ψ of the double-double layup are set within the range of 0º-180º and different combinations are made. Then, under a preset bending moment and a preset number of layers, the optimal combination of angle parameters (±φ, ±ψ) is determined by strength calculation. Finally, the double-double layup is repeated in a fixed cycle along the stacking direction according to the determined combination of angle parameters (±φ, ±ψ). This invention can improve the design stiffness and strength of the stringer with the same material usage, or reduce the amount of composite material used with the same stiffness or strength, resulting in high carbon fiber strength utilization and high material utilization rate.

The utility model discloses a novel light guide plate with uniform light distribution relates to novel light guide plate technical field, this novel light guide plate with uniform light distribution includes novel light guide plate, and the novel light guide plate four corners are all connected with fixed clamp seat, the utility model discloses, light guide plate adopts gradual change compound dot, and the design of circular dot and rhombus dot is combined with the layout of optical simulation optimization, and the optimization surface light intensity solves the problem of uneven light emission from the light conduction source, and the nanometer diffusion film cooperates with the micro prism brightening layer, and the light is regulated by secondary scattering and total reflection, and the light emission uniformity is improved 40% than traditional light guide plate, and effectively eliminates bright spot, dark area, and adapts high -end display, precision lighting scene.

The utility model provides a kind of valve group and compressor of miniaturization reciprocating compressor, it is related to compressor field, to the problem that the temperature of existing small compressor cylinder head is too high, gas flow resistance increases and leads to efficiency reduction, by the offset structure of valve plate on the valve plate subassembly suction hole, enlarge suction valve port flow area, reduce suction resistance, reduce the pressure loss and friction heat in suction process, to reduce suction overheating, from the source to relieve cylinder head overheating problem, allow to adopt smaller size cylinder hole, meet the demand of compressor miniaturization, the valve tongue both sides of suction valve piece are provided with contraction part to form waist, exhaust hole is arranged between two sides waist, adapt to the compact space of miniaturization valve group, suction muffler outlet and cylinder cover keep apart, leave gap, cut off the heat conduction path between cylinder cover and suction muffler, form heat insulation, reduce suction overheating, reduce cylinder head temperature benign cycle, improve miniaturization reciprocating compressor efficiency.

The application discloses a high-temperature curing ablation-resistant and heat-insulating two-component coating and a preparation process. The coating is composed of A component and B component. The A component comprises modified epoxy resin, liquid butyronitrile rubber, aluminum hydroxide powder, chromium trioxide, high-silica fiber powder, hollow glass microbead and toluene; the B component is a curing agent and a curing accelerator. In the preparation, the aluminum hydroxide powder, the chromium trioxide, the high-silica fiber powder and the hollow glass microbead are made into a filler dispersion liquid; then the epoxy resin and the liquid butyronitrile rubber are made into a resin-rubber mixture; then the filler dispersion liquid is slowly and uniformly added into the resin-rubber mixture under stirring, and the A component is obtained by soaking in a static magnetic field at room temperature and grinding; the curing agent and the curing accelerator are the B component. By optimizing the coating composition, the ablation resistance and the heat-insulating performance of the coating can be obviously improved by coating a single layer, the construction process is simplified, the coating thickness is reduced, and the high-temperature resistance of the coating is improved.

The utility model relates to a heat dissipation technical field, concretely relates to a pouring and sealing heat dissipation structure. A pouring and sealing heat dissipation structure, include: shell, the shell upper end opening, the opening place forms the flanging, element, the element is placed in the shell, the upper surface of element with the opening of shell is flush, the clearance between element and shell pours into the heat conducting glue, top heat conducting pad, top heat conducting pad is bonded and fixed in the flanging, the lower surface of top heat conducting pad is bonded with the upper surface of element. The technical problem of increasing cost and weight of pouring and sealing heat dissipation mode in the prior art to put the magnetic piece completely in the complex structure mounting groove pouring and sealing needs a large number of heat conducting glue.

The present application belongs to the field of metallurgy, and particularly relates to a method for stopping blast furnace and lowering material surface, comprising the following contents: (1) adjusting the furnace operation before stopping; (2) adjusting the stopping material and optimizing the material distribution matrix; (3) pre-turbine, replacing the tuyere small sleeve and controlling the furnace top temperature; (4) stopping and lowering the material surface: 1. increasing the ratio of top pressure and hot blast pressure: the ratio of top pressure and hot blast pressure is increased to 0.68-0.75; 2. taking different degrees of control on the top temperature when the material surface is at different positions of the blast furnace: (1) when the material surface is above 1 / 2 of the bosh, the top temperature is controlled at 320-350 DEG C; (2) when the material surface is below 1 / 2 of the bosh, the top temperature is controlled at 280-300 DEG C; 3. spraying coal powder, oxygen enrichment, increasing and continuously maintaining the nitrogen gas injection of the tuyere after stopping the coal injection; 4. controlling the gas composition; 5. controlling the [Si] of the molten iron. The method can avoid the blast furnace explosion in the process of stopping and lowering the material surface, prolong the coal gas recovery time, shorten the time of stopping and lowering the material surface, save the coke consumption and reduce the cost.

The present application relates to the field of environmental chemical engineering, especially to a device for removing new pollutants in sewage and a use method thereof, the shell is sequentially assembled from bottom to top by a water storage area, a filler area and a hydraulic area, the side wall of the water storage area is respectively provided with a water inlet and a water outlet with a non-return valve, and an agitator is fixed to the bottom of the water storage area; the filler area includes a porous filter screen and a biochar filler limited in the interior of the porous filter screen, a glass tube frame extending inward is fixed in the filler area, and an ultraviolet lamp is inserted into the glass tube frame; the hydraulic area includes a hydraulic display screen switch and a hydraulic piston slidingly and sealingly arranged on the top of the shell, the hydraulic piston is controlled to move downward to compress and pressurize the gas in the space below; the device is also connected with an ozone generator for filling ozone gas into the interior of the shell, which improves the adsorption performance and service life of the filler, the gas mass transfer mode and reduces the cost.

The application discloses a phosphoric acid modified protein or polypeptide, a preparation method thereof and application thereof in vaccines, and belongs to the field of protein phosphoric acid modification. The preparation method of the phosphoric acid modified protein or polypeptide is as follows: a compound containing an aldehyde group and a phosphate group is subjected to nucleophilic reaction with a protein or polypeptide to form a Schiff base; a reducing agent is used to reduce the Schiff base, and after post-treatment, the phosphoric acid modified protein or polypeptide is obtained. After the phosphoric acid modified protein product prepared by the method is prepared into a vaccine with an aluminum hydroxide adjuvant and mice are immunized, the antibody titer is significantly increased. This is of great significance for increasing the immune effect, reducing the inoculation dose, saving the antigen amount and improving the immune response of some people or in specific conditions.

A battery module according to one embodiment of the present application includes a battery cell stack in which a plurality of battery cells including protruding electrode leads are stacked, a module frame for accommodating the battery cell stack, and a busbar frame provided to front and rear surfaces of the battery cell stack from which the electrode leads protrude. The battery cell includes a protrusion formed on each of both end portions of a lower edge of the battery cell. At least one of the busbar frames includes a guide portion extending to a bottom of the battery cell stack. The guide portion has a guide groove into which the protrusion is inserted, and the guide groove includes an adjustment portion whose width narrows from where the battery cell is located to where the busbar frame is located.

The application discloses an indoor distribution cable path intelligent generation method combined with building environment characteristics, and comprises the following steps: constructing a semantic grid map capable of distinguishing different building function areas by performing layer identification, semantic annotation and space discretization on an input building plan design map; based on the semantic grid map, different basic passing generation values are given to different types of areas, and a dynamic engineering constraint function comprising a corner turning penalty and a wall sticking reward rule is defined; path search of an improved A* algorithm is performed, in an engineering constraint cost field fused with the basic passing generation value and the dynamic engineering constraint function, a heuristic search algorithm with a dynamic penalty term is used to calculate and generate a candidate cable path meeting engineering specifications; virtual convergence points are determined through node clustering, the path search algorithm is applied hierarchically, a backbone path limited in a public area is generated, branch paths entering rooms are generated, and a complete indoor distribution system cable path topology is generated by merging.

The utility model provides a kind of refractive index sensing device based on titanium dioxide nanopore array, it is related to micro-nano photoelectronic technical field, the device includes titanium dioxide substrate, the titanium dioxide substrate surface is equipped with the nanopore array of square periodic arrangement;Gold film layer, the gold film layer covers in nanopore side wall and hole bottom surface;Silver film layer, the silver film layer covers in the upper surface of the titanium dioxide substrate, and the silver film layer with the gold film layer is connected at the orifice edge of nanopore;Silica protective layer, the silica protective layer covers in the exposed surface of the gold film layer, silver film layer, forms the package protection of metal layer.The utility model improves sensitivity and quality factor, and with low-cost material and local coating reduces cost and simplifies structure, also rely on protective layer to enhance stability, realize high performance and economy compatibility.