169results about How to "Few steps" patented technology

The invention provides a structure capable of controlling a large-volume water gate crack and a construction method thereof, and belongs to the technical field of water gates. The structure comprises a gate bottom plate and a gate pier which are formed by pouring concrete, and the gate pier is arranged above the gate bottom plate; hole cavities are at least formed in the gate piers and reserved in the concrete pouring process. The hole cavity is used as a self-constrained stress hole; and the tough material is used for absorbing stress, is filled in the pore cavity and is connected with the inner wall of the pore cavity. The method comprises the steps of S1, construction preparation; s2, foundation treatment; s3, gate bottom plate construction; s4, gate pier construction: S41, construction lofting; s42, gate pier reinforcing steel bars are bound and installed; s43, a gate pier formwork is erected above the gate bottom plate; s44, a hole forming device is installed at the designed position; s45, concrete pouring, vibrating and curing are conducted; and S46, after initial setting of the concrete, the hole forming device is pulled out of the pipe, and a formed hole cavity is filled with a tough material. The sluice pier crack can be effectively controlled, and the use durability and safety of the sluice are improved.

The invention discloses a chemical regeneration method of waste polyester, which comprises the following steps: adding waste polyester into ethylene glycol, carrying out a depolymerization reaction, carrying out filtering impurity removal, decoloration, cooling crystallization and separation on the obtained depolymerization reaction liquid to obtain a solid product which is a mixture of BHET and BHET dimer, and directly carrying out a condensation polymerization reaction to prepare regenerated polyester. According to the method disclosed by the invention, the solid impurities filtered and removed when the BHET is purified by adding water are found to be BHET dimers for the first time, and the mixture of the BHET and the BHET dimers is directly used as a raw material to prepare the RPET through polymerization without removing the solid impurities, so that the process is simplified, and the cost is saved. The post-treatment steps are simple, a large amount of water does not need to be added to purify BHET, and the solvent ethylene glycol can be recycled through simple treatment. The steps from waste polyester depolymerization to polymerization for preparation of rPET are few, the process is short, the energy consumption is low, the yield is high, and the method has important significance for high-efficiency recovery of PET and green economic technology popularization.

The invention belongs to the technical field of environmental protection, and discloses a method for rapidly and efficiently removing and recycling polycyclic aromatic hydrocarbon in water and a carbon-based adsorbent, the method comprises the following steps: S1, preparing a modified carbon-based adsorbent; s2, treating the polycyclic aromatic hydrocarbon pollutant wastewater; and S3, recycling the polycyclic aromatic hydrocarbon. According to the preparation method, H3PO4 or ZnCl2 is taken as an activating agent, and an activated carbon base material and an activating process are controlled, so that nano-micron multi-scale modified carbon-based adsorbent particles which are mainly prepared from a large number of long-strip-shaped gap mesopores which are communicated with one another and are approximately distributed in parallel and are auxiliary from a small number of discrete irregular groove-shaped mesopores are obtained; the long and narrow long-strip-shaped gap mesopores of the particle are matched with the irregular groove-shaped mesoporous structure, so that large-size polycyclic aromatic hydrocarbon can be quickly adsorbed and desorbed, and the balance of adsorption and desorption efficiency can be realized; on one hand, the adsorption and desorption efficiency of pollutants is improved, and on the other hand, the dosage of the adsorbent is greatly reduced.

The invention relates to the technical field of biological medicines, in particular to a preparation method of 18F-DOPA and an F-18 labeled precursor of 18F-DOPA. The structural formula of the F-18 labeled phenolic precursor compound is as shown in a formula I: # imgabs0 #; wherein R1 and R2 are hydroxyl protecting groups; r3 is a leaving group; r4 and R5 are independently hydrogen or an amino protecting group; and R6 is a carboxyl protecting group. The invention provides a simple and efficient < 18 > F-DOPA preparation method, and particularly relates to preparation of < 18 > F-DOPA by constructing a key phenol precursor compound and performing a simple and efficient photocatalytic deoxidation fluorination reaction on aromatic hydrocarbon. The method has the advantages of few steps, high yield, simplicity and convenience in operation, good repeatability and good automatic production potential. The radioactive tracer agent 18F-DOPA synthesized by using the method has high specific activity, high chemical purity and high radioactive purity, and has an important value for clinical popularization of 18F-DOPA.

The invention discloses a bathtub cleaning device and a cleaning control method.The bathtub cleaning device comprises an overturning body, an overturning driving mechanism, a water outlet piece and a liquid supply system, one end of the overturning body is rotatably installed on one side of a bathtub, the overturning driving mechanism is in transmission connection with the overturning body to drive the overturning body to rotate, and the water outlet piece is installed on the overturning body; the overturning body can rotate to a horizontal state, when the overturning body is in the horizontal state, the water outlet piece is located above the bathtub, the water outlet piece is connected with the liquid supply system through a hose, the water outlet piece is provided with a plurality of water outlet flow channels, and the water outlet flow channels are distributed in a radial shape from the center to the outside. The effect of cleaning the whole bathtub can be achieved only by using one 360-degree scattering water outlet piece, and after cleaning is finished, the overturning body rotates upwards to return to the position of one side of the bathtub and is vertically stored, so that entering and exiting of the bathtub are facilitated, and volume water is prevented from being overturned.

The invention relates to a battery liquid cooling temperature prediction method based on a thermal resistance network, and the method comprises the following steps: analyzing the heat dissipation condition of a geometric model, and mastering the overall heat flow direction; node division is carried out on the whole model, and preparation is made for constructing a thermal resistance network; thermal resistance value calculation, wherein a thermal resistance network is divided into battery heat conduction thermal resistance, liquid cooling plate heat conduction thermal resistance, cooling liquid convection thermal resistance and enthalpy change thermal resistance; combing the series-parallel connection relation of the thermal resistance between the network units to form a complete thermal resistance network model; the transient temperature of all nodes can be calculated through a calculation formula by calculating the thermal resistance value between the nodes. According to the method, the temperature distribution of the battery under the liquid cooling effect is rapidly and accurately predicted, a reliable basis is provided for real-time temperature monitoring, the problem that the thermal resistance calculation of the liquid cooling plate is complex is solved, and meanwhile the technical problem that the complex calculation problem caused by follow-up structure and parameter optimization can be rapidly solved through the universality of the method is needed to be solved at present. Compared with the prior art, the device has good market prospect and development space.

The embodiment of the invention discloses a text rendering method and device, equipment, a medium and a product, and the method is applied to a server side and comprises the steps that a rendering request for a to-be-rendered text is acquired, and the rendering request comprises a text demand and an effect demand; generating rendering parameters of the to-be-rendered text based on the text demand and the effect demand; obtaining a target canvas for displaying the to-be-rendered text, and determining the layout of the to-be-rendered text in the target canvas according to the rendering parameters; and rendering the to-be-rendered text by using at least one rendering mode in the target canvas according to the layout. According to the technical scheme provided by the embodiment of the invention, the rendering time consumption is reduced while ensuring that the presentation of the rendering text in the canvas is consistent with the expectation.

The invention relates to a CD44 receptor and scavenger receptor-A (SR-A) dual-targeting pharmaceutical composition as well as a preparation method and application thereof. According to the invention, a certain proportion of carrier material with CD44 receptor targeting capability is adsorbed on the fatty acid albumin nanoparticles, and the albumin nanoparticles with CD44 receptor and SR-A dual-targeting capability are successfully prepared. The albumin nanoparticles can simultaneously deliver drugs to activated macrophages with high SR-A specificity expression and fibroblasts or tumor cells with high CD44 receptor specificity expression, provide new treatment schemes and ideas for various diseases including tissue fibrosis and tumors, and have great application value in the field of biological medicine.

The invention provides a universal data management system and method based on a multi-modal agent, electronic equipment, a storage medium and a program product. The universal data management method based on the multi-modal intelligent agent comprises the following steps: S1, defining and realizing data acquisition, data cleaning, data labeling and a data storage tool set; s2, designing a task Prompt and inputting the task Prompt into the multi-mode intelligent agent; and S3, the multi-modal agent generates a treatment plan according to the treatment task and requirements and comprehensively uses the tool chain to complete the data treatment task. Through the data governance system and the data governance method, the working process is simplified; each team only needs to pay attention to development and maintenance of own tools and does not need to pay attention to the complexity of the whole process, so that task decoupling is realized; the multi-modal intelligent agent can flexibly select and switch different tools, and the more the tools are, the stronger the problem solving capability of the system is; the method is suitable for various data governance scenes, is not limited by specific industries and applications, and has high universality.

The invention relates to a preparation method and application of a composite catalyst for catalyzing toluene oxidation. The method comprises the following steps: step 1, dissolving K2FeO4 in water, adding a manganese salt compound, and stirring evenly to obtain a solid-liquid mixture 1; step 2, transferring the solid-liquid mixture 1 obtained in step 1 to a closed container and performing a heating treatment; step 3, filtering the product after the heating treatment in step 2, and washing (repeatedly washing with deionized water or ethanol) to obtain a Mn3O4-Fe2O3 solid; step 4, drying the Mn3O4-Fe2O3 primary solid obtained in step 3 to obtain a Mn3O4-Fe2O3 solid; and step 5, calcining the Mn3O4-Fe2O3 solid obtained in step 4 to obtain the Mn3O4-Fe2O3 catalyst.

The invention discloses a method for preparing 5-hydroxymethylfurfural by rapidly converting high-concentration biomass derived sugar, and belongs to the field of biomass catalytic conversion. The method comprises the following steps: mixing biomass derived sugar with a deep eutectic solvent, and carrying out closed reaction to obtain 5-hydroxymethylfurfural; the eutectic solvent comprises benzyl quaternary ammonium salt, organic acid and a cosolvent, and the organic acid is benzenesulfonic acid or organic dicarboxylic acid with 2-5 carbon atoms; the molar ratio of the benzyl quaternary ammonium salt to the organic acid to the cosolvent is (1-3): (0.5-1.5): (0-5); the concentration of the biomass derived sugar is 5 to 50 weight percent. The benzyl quaternary ammonium salt with a benzene ring is used as a hydrogen bond acceptor, the organic acid and the cosolvent are used as hydrogen bond donors to form the eutectic solvent, and a hydrogen bond network and an acid environment around the biomass derived sugar can be properly regulated and controlled by adjusting the proportion of the benzyl quaternary ammonium salt, the organic acid and the cosolvent, so that high-substrate sugar is efficiently and quickly converted into 5-hydroxymethylfurfural.

The present application relates to a semiconductor laser aging test system and method, the system includes: a power supply; at least two laser test stations for installing lasers to be tested for aging; a laser test device for collecting the optoelectronic parameters of the laser on each laser test station; a mobile device for moving the laser test device to the corresponding laser test station; a switch device, one end of which is connected to the power supply and the other end of which is connected to the laser on each laser test station, and which is used to control the power-on state between the power supply and the laser on each laser test station; a control device, which is connected to the laser test device, the mobile device, and the switch device. During the test, the control device controls the power supply through the switch device to power on the lasers on the laser test station one by one, and controls the laser test device to test the powered lasers; during aging, the control device controls the power supply through the switch device to power on the lasers on the laser test station.

The utility model relates to the field of ice makers, in particular to a positioning structure of an ice maker evaporator distributive pipe, an ice maker comprises an ice cube tray, an evaporating pipe, a shell and a distributive pipe, the evaporating pipe is arranged on the back of the ice cube tray, the ice cube tray is fixed in the shell, and the distributive pipe is arranged above the shell. The positioning structure comprises a first opening and a second opening which are formed in the two sides of the top of the shell respectively, the first opening and the second opening are matched with the water distribution pipe in shape, and the water distribution pipe is erected on the first opening and the second opening. A bulge is arranged in the second opening, a positioning hole is correspondingly formed in the water distribution pipe, and the positioning hole is matched with the bulge; water distribution holes are formed in the water distribution pipes, and the water distribution holes and the positioning holes are all located below the water distribution pipes. According to the positioning structure of the water distribution pipe of the ice maker evaporator, the direction of the water distribution holes does not need to be additionally adjusted when the water distribution pipe is installed through the structure, installation is completed in one step, installation steps of the water distribution pipe are simplified, installation of the water distribution pipe is simpler, and installation efficiency is improved.

The invention belongs to the technical field of organic synthesis and drug intermediate preparation, and relates to a resolution preparation method of a monepantel key intermediate. In the first aspect, the invention provides a preparation method of a compound shown as a formula 3, which comprises the following steps: # imgabs0 #, in which R1 is selected from TMS, TES, TBDMS, TIPS, TBDPS or # imgabs1 #, the reaction is as follows: # imgabs2 # comprises the following steps: step 2, reacting a compound shown as a formula 2 with an ammonia source and a cyaniding reagent to obtain the compound shown as the formula 3; according to the method 2, the reaction is as follows: # imgabs3 # comprises the following steps: step 5, a compound shown in a formula 7 is subjected to the action of ammonia gas to obtain a compound shown in a formula 3; on the second aspect, the invention provides a preparation method of a compound shown as a formula 5, and the reaction is as follows: # imgabs4, in which R1 is as described in the first aspect; the method comprises the following steps: step 3, obtaining a compound shown as a formula 5 from a compound shown as a formula 3 under the action of a resolving agent. The method disclosed by the invention is higher in yield, simpler in post-treatment and simple and convenient to operate, and has a good industrial production prospect.

The utility model discloses a stroke-increasing type cylinder cover three-groove clamping clack press-fitting tool, and belongs to the technical field of range extender assemblies for new energy automobiles. The problems that compared with a single-groove valve clamping flap, a three-groove valve clamping flap of a new energy range extender is difficult to press and cannot be manually pressed are solved, meanwhile, eccentric wear of a valve and a valve seat can be effectively avoided, the installation quality is guaranteed, and the performance of a range extender assembly is improved. The pressing head is arranged above the cylinder cover overturning and positioning mechanism, the pressing head is installed on the pressing mechanism, the pressing mechanism is horizontally installed at the upper end of the pressing table in a sliding mode through a sliding rail, and the pressing head is driven by the pressing mechanism to press the valve clamping flap on the valve rod. According to the utility model, the top surface of the spring is pressed below the valve clamping groove by manually operating the press-fitting device, the valve clamping flap is released by manually pushing the clamping flap shifting sheet, the pressure head is reset upwards, the clamping flap moves into the valve clamping groove along with the valve spring seat under the action of the elastic force of the valve spring, and the press-fitting of the clamping flap is completed.

The invention discloses an asymmetric synthesis method of an efinaconazole intermediate, which comprises the following steps: adding auxiliary materials and water into a reaction bottle, then adding hydrogen peroxide, controlling a certain temperature to dropwise add an organic solution of a substrate I and a catalyst II into the reaction bottle, controlling a certain temperature to carry out a heat preservation reaction, and carrying out post-treatment to obtain a product III. The target product is obtained through the proper chiral catalyst, and the method is mild in condition and high in chiral selectivity.

The invention belongs to the technical field of noble metal catalyst preparation, and particularly relates to a preparation method of high-purity tetraammineplatinum nitrate. According to the method, potassium tetranitroplatinate is prepared from chloroplatinic acid and potassium nitrite, then potassium hexanitroplatinate is prepared, and finally platinum nitrate tetraammine is prepared, so that the method uses fewer types of raw materials, does not use expensive reagents, has fewer steps, is simple and convenient to operate, is easy to realize large-scale production, and is suitable for industrial production. The yield of the prepared platinum tetraamminenitrate is greater than or equal to 94.1%, the purity of the platinum tetraamminenitrate is greater than or equal to 99.3%, and the platinum content is greater than or equal to 41.9%.

The invention belongs to the technical field of unmanned aerial vehicle positioning, and particularly discloses an unmanned aerial vehicle target positioning system, which comprises an image acquisition module arranged at the bottom of an unmanned aerial vehicle and used for acquiring ground image information; the target identification module is used for identifying a target point in the ground image information; the coordinate conversion module is used for converting the GPS coordinates of the unmanned aerial vehicle into UTM coordinates; converting the projection coordinate of the target point into a geographic coordinate; the parameter calculation module is used for calculating a ground distance corresponding to a unit pixel; and based on the yaw angle of the unmanned aerial vehicle and the position of the target pixel point relative to the image center point, calculating the coordinate of the target point in the projection coordinate system by using the ground distance corresponding to the unit pixel. According to the method, the types and the number of sensors are simplified, only a basic visible light camera needs to be carried, the complexity and the cost of the system are reduced, image data can be rapidly processed through an optimization algorithm and an efficient data processing technology, and rapid recognition and positioning of a target are achieved.

The invention belongs to the technical field of fiber materials and provides a method for preparing modified aramid fiber. The method comprises the following steps: step 1: providing aramid fiber; step 2: dissolving a complex in a first organic solvent to obtain a first mixed solution, adding the aramid fiber to the first mixed solution, and performing a drying process after soaking for 8-48 hours; step 3: dissolving a compound of formula I in a second organic solvent to obtain a second mixed solution, adding the product obtained in step 2 to the second mixed solution, and performing a drying process after soaking for 1-4 hours to obtain the modified aramid fiber.

This utility model belongs to the field of furniture manufacturing, specifically relating to a frame assembly for woven strip products and furniture including the assembly. The frame assembly includes a frame body, on which several locking fasteners are detachably mounted. Each locking fastener includes a positioning ring, which is used to thread and position the strip. The strip can be woven by threading it through different positioning rings on the frame body. By adopting the above technical solution, the frame assembly can serve as a force-bearing point for the woven furniture components, providing a fixing point for the woven strip. Compared to traditional methods of fixing using winding or nail guns, the present invention only requires the strip to be threaded through the positioning ring once for fixation, thus saving strip material, reducing weaving steps, and lowering material and labor costs.

The utility model discloses a single battery, a battery pack and electric equipment, and belongs to the technical field of power batteries, the single battery comprises a shell, an electrode assembly, an insulating film, a side plate and a cover plate assembly, and the shell is provided with an accommodating cavity; the electrode assembly is arranged in the accommodating cavity and has a first direction; the insulating film sleeves the periphery of the electrode assembly by one circle and is partially overlapped and connected, and the insulating film is positioned between the electrode assembly and the shell; the side plate is arranged at the overlapped and connected part of the insulating film along the first direction, and the side plate and the insulating film are integrally formed; the cover plate assemblies are arranged at the two ends of the shell, cover the containing cavity and are connected with the shell. The side plate and the insulating film are integrally formed, so that the step of assembling the side plate and the insulating film is reduced. Through partial overlapping of the insulating film, after the periphery of the electrode assembly is coated with the insulating film, an adhesive tape does not need to be used for fixing, and the step of coating the insulating film is further reduced.

This invention discloses a recombinant vector, recombinant bacteria, and fermentation method for high-yield GHK production, belonging to the field of biomedical technology. The recombinant expression vector of this application comprises a bicistronic expression cassette controlled by a T7 / lac heterozygous promoter, sequentially containing the encoding (GHK). n The vector encodes the first cistron of the polypeptide and the second cistron, where n is an integer from 2 to 200. When this vector is transformed into *E. coli* BL21, the resulting recombinant bacteria can simultaneously express (GHK) after IPTG induction. n Polypeptides and trypsinogen. During fermentation, trypsinogen is activated and enables the processing of (GHK). n In situ enzymatic cleavage of peptides efficiently releases GHK. This invention integrates the traditional multi-step process into a "one-step fermentation," simplifying the production process and reducing purification difficulty. Examples show that the GHK yield can reach up to 3.9 g / L, providing an efficient and convenient new strategy for the large-scale biomanufacturing of GHK.

The invention relates to the technical field of logistics truck loading, in particular to logistics automatic truck loading equipment which comprises a base, a truck loading mechanism is arranged at the top of the base and comprises a conveying assembly capable of increasing the conveying depth and an adjusting assembly capable of adjusting the conveying height and the horizontal angle, a clamping and releasing mechanism is arranged on one side of the truck loading mechanism, and a clamping and releasing mechanism is arranged on the other side of the truck loading mechanism. The clamping and releasing mechanism comprises a clamping assembly capable of directly clamping goods on the ground and a range expanding assembly for expanding the clamping range. Through the arrangement of the loading mechanism, a transmission lead screw and an adjusting lead screw are synchronously rotated, the transmission lead screw drives a sliding plate to slide out of a sliding groove, the distance between an auxiliary transmission wheel and a main transmission wheel is increased, meanwhile, the adjusting lead screw drives an adjusting block to ascend, a movable transmission wheel ascends to be close to a fixed transmission wheel, and a conveying belt can be prolonged; and compared with a comparison file, the distance between the goods and the deepest position of the carriage is reduced, the distance for workers to carry the goods is reduced, and therefore more labor is saved.

A motor manufacturing method and a motor, the method comprising: providing a housing, the housing being provided with an accommodating hole, the inner wall of the accommodating hole being convexly provided with a first limiting portion and a second limiting portion which are axially arranged at an interval; a stator is provided, the stator comprises a plurality of stator laminations arranged in a stacked mode, and a matching part is arranged on the peripheral side face of the stator; enabling the matching part to be matched with the first limiting part, and mounting the stator into the accommodating hole until one axial end of the stator is propped against the second limiting part, pressing the plurality of stator laminations and enabling the stator to be positioned between the first limiting part and the second limiting part, so that the stator and the shell relatively rotate along the circumferential direction of the accommodating hole; the matching part and the first limiting part are staggered along the circumferential direction of the accommodating hole; the stator is released, and the two axial ends of the stator abut against the first limiting part and the second limiting part respectively under the action of the elastic force of the stator laminations. Therefore, low-cost, convenient and reliable assembly of the motor is realized at the same time, and the difficulty of part manufacturing and finished product assembly of the motor is reduced.

The present invention discloses a conveying device for producing plastic handicrafts, and relates to the technical field of conveying equipment for plastic handicrafts, comprising a vehicle body and a conveying box, wherein a rotating shaft is rotatably passed through the bottom of the vehicle body, and wheels are fixedly installed on the surface of the rotating shaft, and also comprises a shock absorbing device, wherein the conveying box is placed inside a base, the hollow sleeve is fixedly installed on the bottom of the base, the mounting block is fixedly installed on the surface of the hollow sleeve, the flip plate is rotatably installed on the surface of the mounting block, the connecting plate is rotatably passed through the bottom of the hollow sleeve, the Z-shaped piece is fixedly installed on the top of the chassis, and the abutment plate is fixedly installed on one end of the Z-shaped piece close to the connecting plate. By arranging the elastic Z-shaped piece, the downward moving distance of the telescopic end of the buffer damper is effectively controlled, thereby improving the buffering effect of the buffer damper.