180results about How to "Avoid postprocessing" patented technology

The invention discloses a double-rotating-shaft 3D printing platform capable of completing printing of the lateral side parts of components. According to the double-rotating-shaft 3D printing platform, by means of two stepping motors, a working table can be driven to rotate around the vertical axis of the working table itself and can pitch and incline up and down around the horizontal central axis of the platform during rotation; and on the other hand, the 3D printing platform is driven by a ball screw to rise and fall along the Z axis, and therefore precise and complete printing of the lateral side parts of the printed parts is achieved. The double-rotating-shaft 3D printing platform is simple in structure, reasonable in design and convenient to control, no supporting materials need to be added during printing, the pretreatment and aftertreatment procedures required by conventional printers are reduced, the quality of printed pieces is improved, and the application field of printers of the type is expanded.

The invention provides an integrated device for heavy metal contaminated soil remediation and leacheate recycling. The integrated device comprises a leaching tower, a sedimentation basin, a water suction pump, an electrochemical reactor, a circulating pump and a liquid reservoir, all of which are orderly connected into a loop through communicated pipes; the device is capable of effectively removing heavy metals in soil; the leacheate can be recycled after electrochemical treatment; the device is high in remediation efficiency, low in running cost, simple in structure, high in applicability, free of noise and small in floor area. The invention also discloses a corresponding method which comprises the steps of soil leaching, sedimentation and electrochemical treatment, all of which circularly circulate; the method is capable of effectively removing heavy metals in soil and few in leaching times; the leacheate is high in circulating leaching efficiency after electrochemical treatment; secondary pollution is avoided, and aftertreatment of the leacheate is avoided, so that the treatment cost is reduced; the method is simple and the process of the method is easy to control. The integrated device and the method are applicable to remediation of heavy metal contaminated soil and leacheate recycling.

The invention discloses a method for preparing a molybdenum-disulfide (MoS2) nanotube. The method is characterized by comprising the following steps of preparing a C-MoS2 coaxial nanotube wrapped by homogeneous MoS2 by taking a fibrous carbon (C) nanomaterial as a template, and calcining the C-MoS2 coaxial nanotube at a high temperature in a flowing CO2 atmosphere to remove C to obtain the MoS2 nanotube. The thickness of the wall of the MoS2 nanotube prepared by adopting the method can be controlled by changing the thickness of the MoS2 wrapping layer in the C-MoS2 coaxial nanotube. Because the raised surface or sharply bent part of the fibrous C nanomaterial can not be totally wrapped by MoS2, the prepared MoS2 nanotube has structure defects correspondingly, but the number of active spots on the edge of the MoS2 nanotube can be increased due to the structure defects so that the MoS2 nanotube has excellent optical and catalytic properties.

The invention discloses a preparation method of HEPES (hydroxyethylpiperazine ethane sulfonic acid) molecule guided porous zinc oxide microspheres. The preparation method comprises the specific experimental steps of taking HEPES molecules as a guide agent and organic zinc salt as a zinc source, reacting under a solvent heat condition at 150 DEG C, performing centrifugal washing to remove the residual solvent and HEPES modules, and drying the product to obtain porous zinc oxide microspheres with high specific areas. According to the preparation method disclosed by the invention, nontoxic HEPES molecules are used, the synthetic temperature is low, the operation is simple, and the repeatability is good. The prepared porous zinc oxide microspheres have the advantages of uniform size, multistage pore structure, large specific area and the like, and can be used as a photo-catalyst and a gas-sensitive element.

The invention discloses preparation technology of atorvastatin. The preparation technology comprises the following steps: a first step, the reaction of phenylacetic acid and thionyl chloride is carried out in order to obtain phenylacetyl chloride; a second step, the Friedel-Crafts acylation reaction of phenylacetyl chloride and fluorobenzene is carried out under the action of catalyst, in order to obtain 4-fluorophenyl acetophenone; a third step, 4-fluorophenyl acetophenone is brominated and the brominated 4-fluorophenyl acetophenone is reacted with N-phenyl-isobutyloylacetamide in order to obtain M-4; a fourth step, a reaction is carried out for M-4 and ATS-9 in a cyclohexane, toluene or a mixed solvent of cyclohexane and toluene, pivalic acid is used for catalysis, and a condensation product is obtained. Phenylacetyl chloride and fluorobenzene are reacted in a catalytic action of zeolite molecular sieve, a complexation reaction of the catalyst and products is avoided, reaction yield is improved, and side reactions are few in order to facilitate purification; post-treatment can be carried out for excess M-4 for recycling and reusing, reaction yield is improved, mole proportion of M-4 to ATS-9 and the addition amount of pivalic acid can be adjusted, and final yield of the reaction is improved.

The invention provides a system for preventing motor vehicle green-light following intersection blocking. The speed of a motor vehicle over a stop line is detected, the passing time required when the motor vehicle passes through an intersection at the speed is calculated and compared with the remaining time of the green light in the releasing direction, and if the required passing time is longer than the remaining time of the green light, the green light in the direction is controlled to be switched into the red light. By means of the mode, the vehicle can be prevented from entering the intersection in a light switching mode when the intersection is blocked, as red light running belongs to illegal acts, green-light following generated when blocking occurs can be effectively avoided, and the passing efficiency of the intersection is guaranteed. According to the scheme, the signal light is controlled to be switched into the red light instead of a reminding board, as law enforcement can not be carried out when driving does not conform to the reminding board, the reminding board only has the reminding effect, law enforcement can be facilitated in the light switching mode, and the good passing order can be easily established.

The invention discloses a preparation method of an efficient ground calcium carbonate grinding dispersant by photo-initiating room-temperature RAFT (Reversible Additive Fragment Transfer) polymerization. The method comprises the following steps: adding a vinyl carboxylic ester monomer, a polythio ester chain transfer agent and a photoinitiator into a solvent and bubbling for 15-30 minutes by nitrogen; illuminating to react for 3-12 hours by an ultraviolet lamp, wherein the central wavelength of the ultraviolet lamp is 365nm and incident light passes through a wave cutoff sheet with the wave cutoff range greater than 254nm; after reaction, mixing the obtained solution with an NaOH solution, hydrolyzing for 3-10 hours at 80-120 DEG C, carrying out reduced pressure distilling to remove the solvent and alcohol byproducts, then, adding the NaOH solution to adjust the pH to 4-8 and adding water to adjust the solid content to 41-43% to obtain the efficient ground calcium carbonate grinding dispersant. Compared with conventional free radical polymerization, the method has the advantages of controllable molecular weight, narrow distribution of molecular weight and no free countra-ions introduced in the initiating process. The method has the following characteristics of simple treatment, pure product and low energy consumption and meets modern green chemistry.

The invention discloses a method for preparing a dispersing agent for grinding triple superphosphate with a branched structure. The method comprises the following steps: adding vinyl carboxylic acid monomer, a polythioester chain transfer agent containing double bonds and a photoinitiator into a solvent, and bubbling for 15-30 minutes with nitrogen; irradiating to react for 3-12 hours with incident light passing through a wave clipping plate with clipping range more than 254nm by utilizing an ultraviolet lamp with central wavelength of 365nm; distilling to remove the solvent, and adding a NaOH solution to regulate the pH of the system to be 4-8, and adding water to regulate weight solid content to 41-43 percent to obtain the dispersing agent for grinding triple superphosphate with a branched structure. The dispersing agent has an excellent dispersing performance on calcium carbonate due to the branched structure; the molecular weight distribution for preparing the dispersing agent is narrow, the initiating process does not introduce free counterions. Post-treatment is simple, the product is pure, and energy consumption is low.

The invention discloses a ganoderma lucidum total triterpene purified product with high anthropogenic tumor cell activity and a purification method of the ganoderma lucidum total triterpene purified product. The method comprises the following steps: purifying a ganoderma lucidum extract liquid with macroporous resin and MCI GEL resin, destaining, concentrating a destaining solution and then carrying out spray drying, so as to obtain the ganoderma lucidum total triterpene purified product with obvious anthropogenic tumor cell activity. The ganoderma lucidum total triterpene purified product has the advantages that the preparation method is simple and fast, free of a toxic solvent and free of harm to a human body and environment; the purified product is low in production cost, stable in quality, and suitable for industrial production; and the purified ganoderma lucidum total triterpene has obvious anthropogenic tumor cell activity, and can be further developed into anticancer medicines.

The invention discloses a method for preparing iminodibenzyl. In the method, phosphoric acid is added into 2,2,-diamido-bibenzyl to form salt, and the salt is subjected to cyclization reaction to prepare the iminodibenzyl. The method is characterized in that after the phosphoric acid is separated from a product formed by the cyclization reaction of the 2,2,-diamido-bibenzyl, nitrogen is introduced to perform reduced pressure distillation, and the distilled iminodibenzyl is collected by a cyclone separator. The method for preparing the iminodibenzyl comprises the following steps of: adding the phosphoric acid into the 2,2,-diamido-bibenzyl to form the salt, performing the cyclization reaction to obtain iminodibenzyl, introducing the nitrogen directly, distilling under reduced pressure, and collecting the iminodibenzyl by the cyclone separator, wherein the product formed by the cyclization reaction is subjected to the steps of elutriation, recrystallization and the like. The method has a simple process, the yield of the product is improved, and the purity of the iminodibenzyl is over 99.0 percent.

The invention provides a bill form detection method, which comprises the following steps of: inputting a pre-processed bill form picture into a multi-category text detection system, and respectively generating a central point graph, a category graph and a distance graph; searching a central point in the central point graph based on an extreme point detection method so as to determine the positionof a semantically independent field; determining the size of each semantic independent field in the distance map based on the searched central point, thereby determining a candidate box; and based onthe candidate box, determining the category of the candidate box in the category graph by adopting a voting mechanism. Compared with the prior art, the method has the following beneficial effects: based on the idea of center point detection, post-processing of non-maximum suppression (NMS) can be avoided, so that the process is simplified, the prediction process is simple, the speed is high, the detection accuracy is high, and the robustness is good.

The invention discloses a linear alkylbenzene catalytic hydrofining method. The method comprises the steps that under the conditions that the temperature ranges from 60 DEG C to 350 DEG C, pressure ranges from 0.3 MPa to 10.0 MPa, the mass space velocity ranges from 0.2 h<-1> to 10.0 h<-1>, and the hydrogen and oil volume ratio ranges from 300:1 to 8000:1, a hydrogenation raw material and hydrogen are mixed and react with a palladium supported type catalyst in a contact mode so that olefin can be saturated, and then a trace amount of olefin is removed, the bromine index of linear alkylbenzene is reduced, and the product quality is improved; the hydrogenation raw material is linear alkylbenzene obtained by alkylation of benzene with C10-C14 linear olefins mixture in a distillation separation mode, or is alkylation of benzene with C10-C14 linear olefins mixture. The technological process is simple, the catalyst activity is good in stability, the stable operation time of a device is long, reactor reaction and regeneration frequent switching operation can be avoided, less loss of linear alkylbenzene is realized, the catalyst is reproducible, postprocessing of a large number of catalysts can be avoided, and less influence is caused for an environment.

The embodiment of the invention provides a face editor training method, a face editing method, a live broadcasting method and related devices, and the face editor training method comprises the steps: taking original face data as a sample, training a face reconstruction device used for restoring a face, training an implicit vector for the original face data, and representing a face attribute by the implicit vector, in the space where the implicit vector is located, searching for a normal vector which represents the direction for editing each face attribute, aiming at each face attribute, adjusting the implicit vector along the normal vector so as to generate target face data in a face reconstructor, aiming at each face attribute, and under the supervision of the paired original face data and target face data, adjusting the face reconstructor into a face editor for editing the face attribute. By independently training the face editor for the single face attribute, the face editor can keep better performance under the condition that a simple structure is applied to carry out supervised learning, the effect of editing the face attribute is controllable, and the structure of the face editor can be greatly simplified.

The invention belongs to the technical field of fine chemical engineering, and particularly relates to a method for preparing a polymer/reduced graphene oxide composite material. Polymers and graphene oxide (GO) are used as raw materials, a traditional macromolecular processing and modification technology is utilized, a chemical reduction agent is added, and the GO is directly reduced to reduced graphene oxide (rGO) to certain extent in the processing process, so that the polymer/reduced graphene oxide composite material is obtained in one step. Compared with the conventional method utilizing macromolecules, graphene oxide and the reduction agent to prepare the polymer/reduced graphene oxide composite material by virtue of solution mixing, the method of the invention avoids the use of a great amount of solvent and the complex after-treatment and has the advantages of simple operation, low production cost, convenience in mass production and the like.

The invention provides an axis runout trajectory testing device for a combined harvester threshing drum. The device comprises a magnetic outer casing, a magnetic hanging brush, a coordinate card and ashaft end adsorption mechanism, which are coaxially mounted; one end of the magnetic outer casing is connected with one end of the shaft end adsorption mechanism; one side of the coordinate card is mounted on one end of the shaft end adsorption mechanism; the magnetic suspension brush is suspended and fixed inside the magnetic outer casing; a tip of one end of the magnetic suspension brush abutsthe other side of the coordinate card; the magnetic suspension brush is positioned in suspension, and the other parts rotate together with the axis; the brush records a trajectory which is an upside down and left-and-right mirroring version of the actual axis runout trajectory on the grid coordinate card; and finally the grid coordinate card is inserted into a card reader to obtain an amplified erect axis runout trajectory. The device can be applied to test the runout state of the threshing drum of various rice combine harvesters, and can solve the problem that the existing threshing drum axisrunout test device is susceptible to friction damage by the threshing drum shaft.