13results about How to "Effective combination" patented technology

To address the issues of insufficient performance and high cost associated with integral casting and additive manufacturing methods for parts with small-entry elliptical gradient deep cavities, and the difficulties, low efficiency, and high cost of metal removal methods, this invention proposes a machining method for elliptical gradient deep cavities with small entry points. The method involves first rough drilling and rough turning to obtain a deep hole. Then, a step-by-step machining approach is adopted, dividing the part into regions and machining them axially and radially. First, the part is tilted to machine the regions on both sides of the major axis of the ellipse. Then, the part is turned upright to machine the regions on both sides of the minor axis of the ellipse. During the upright machining, a radial layering and thin-cutting fast-running method is used. Several layers are machined using the first toolpath until the machining residue in the undercut and triangular regions is removed. Then, a second toolpath is used for contour machining to obtain a gradient deep cavity with an elliptical cross-section. Finally, the gradient deep cavity is precision milled until its internal dimensions and surface roughness meet the design requirements.

The application discloses a specific molecular marker combination, a primer probe group, a kit and application thereof for identifying artificial Ophiocordyceps sinensis and wild Ophiocordyceps sinensis in the Tibet Autonomous Region, and the molecular marker combination comprises SNP1, SNP2 and SNP5; the SNP1 is located at the 339bp position of the nucleotide sequence shown in SEQ ID NO:1, and the polymorphism is C or T; the SNP2 is located at the 354bp position of the nucleotide sequence shown in SEQ ID NO:1, and the polymorphism is A or C; and the SNP5 is located at the 398bp position of the nucleotide sequence shown in SEQ ID NO:1, and the polymorphism is G or T. The molecular marker combination of the application scheme can be effectively used for distinguishing the artificial Ophiocordyceps sinensis and the wild Ophiocordyceps sinensis in the Tibet Autonomous Region.

This invention relates to the field of heterogeneous catalysis technology in chemical engineering, specifically to a highly active catalyst for the direct synthesis of dimethyl carbonate from methanol and carbon dioxide. The catalyst is CeO2 derived from Ce-MOF, with a Taylor ratio of 0.15-0.35. Using acidic Ce-MOFs as a cerium precursor, this catalyst leverages their ordered pore structure, large specific surface area, and superior adsorption capacity to achieve the resorption of metal ions (CeO2, MgO, MgO, MgO, MgO) by... 3+ Ce 4+ The high dispersion of the catalyst in Ce-MOF, and the addition of appropriate hydroxides can reduce the adsorption of non-reactive substances, thereby significantly improving the catalytic activity of the catalyst.

The utility model relates to the field of ancient architecture gardens, especially a flower box type arched gate. The arched gate contains four vertical supports (2), and the upper portion of the four vertical supports (2) is an upper top support (1); the four vertical supports (2) contain a plurality of layered plates (3) arranged at intervals; each layered plate (3) is arranged with a bolt hole (6) at four corners; the arched gate further contains a flower box (5), the bottom of the flower box (5) can be installed on the bolt hole (6) through a bolt; the middle portion of the four vertical supports (2) is a door opening space (4); a plurality of flower boxes (5) are built between the plurality of layered plates (3) on both sides of the door opening space (4); the flower box (5) is arranged with a waterproof cloth, the waterproof cloth has soil, and the soil has green plants. The flower box and the vertical support (2) are combined, and the flower box and the arch gate can be effectively combined.

The application relates to the technical field of biomedical materials, and specifically discloses a preparation method of a double-crosslinked 3D-printed bone repair scaffold. The scaffold is made of a biphasic calcium phosphate matrix and a gelatin methacrylate hydrogel outer layer. The preparation method comprises the following steps: firstly, preparing biphasic calcium phosphate ink, and constructing a porous scaffold blank through 3D printing; then, carrying out double-crosslinking treatment of calcium chloride solution and glutaraldehyde solution in sequence to obtain a scaffold matrix with enhanced mechanical properties; then, preparing gelatin methacrylate hydrogel loaded with modified teriparatide, and compounding the gelatin methacrylate hydrogel with the scaffold matrix; and finally, obtaining the final product after blue light crosslinking and solidification. The bone repair scaffold has good biocompatibility and osteogenic activity, and can effectively promote bone defect repair. In addition, the preparation method is controllable and has good repeatability, the structure of the scaffold is accurately controlled through the 3D printing technology, and a new approach is provided for the preparation of personalized bone repair materials.

This invention provides a nanobody targeting carp herpesvirus type II and its application. The amino acid sequence of the nanobody is shown in SEQ ID NO. 1-6. The method includes immunizing alpacas with inactivated carp herpesvirus type II, collecting peripheral blood from the immunized alpacas and separating lymphocytes, and extracting total RNA; synthesizing cDNA by reverse transcription, and amplifying the gene fragment encoding the nanobody; ligating it into the pComb3xss vector, and then transforming it into competent cells to construct a nanobody phage display library; enriching and panning the inactivated virus as a coating antigen to obtain specifically binding phage particles; transforming the selected positive clones into host bacteria for induced expression; and obtaining the anti-carp herpesvirus type II nanobody after separation and purification. This invention aims to provide a carp herpesvirus type II nanobody that is low in expression cost and difficulty, has a stable source, can effectively bind to carp herpesvirus type II, and specifically achieves immunoassay of carp herpesvirus type II.

The application belongs to the technical field of desulfurizer, and discloses a natural gas desulfurizer, a preparation method and application thereof, the natural gas desulfurizer comprises 2-(2-morpholine-4-ethoxy)-ethanol and N-methyl diethanolamine with a molar ratio of (1-3):(2-4). The removal rate of H2S reaches more than 98%, and the removal rate of organic sulfur reaches 70%-75%. The application expands the application range of N-methyl diethanolamine as a main agent, and can be used for refining and removing hydrogen sulfide and organic sulfur in the acidic gas in the natural gas, coal chemical industry and petroleum chemical industry process. The preparation process of the composite desulfurizer is simple, the cost is low, the environmental pollution is small, and the application effect is outstanding.

This utility model discloses an integrated hydraulic mechanical device for desanding and desliming, relating to the field of cyclone desanding and desliming equipment. A cyclone separator body is mounted on one side of the frame, with a tangential hydraulic feed inlet at the top. The cyclone separator body has a driven pulley; its rotation drives the lower conical tube to rotate. An adjustable mounting plate is slidably connected to the frame and secured with bolts. An adjusting screw is located on the side of the adjustable mounting plate away from the cyclone separator body, connected to the end of the frame via an adjusting nut. A drive motor is fixed to the bottom surface of the adjustable mounting plate, with its power output shaft passing upwards through the plate. A drive pulley is located above the adjustable mounting plate and securely connected to the drive motor's power output shaft. A transmission belt is fitted onto both the drive and driven pulleys. This utility model improves separation efficiency and adaptability to variable flow conditions while reducing the requirements for feed pressure.

This invention discloses a process for manufacturing an impact-resistant and wear-resistant ultra-hard metal-based composite layer and a straightening roller, comprising an alloy groove coating layer one, an alloy groove coating layer two, and an alloy working layer; both alloy groove coating layer one and alloy groove coating layer two have sinusoidal structures, are staggered, and have at least one set of intersection nodes between them, and are located inside the alloy working layer. By introducing V and Nb into the original formulation and precisely adjusting the proportions of components such as Co, Ni, Cr, C, B, and Si to meet the requirements, the composite layer retains high hardness and good oxidation resistance, impact resistance, thermal shock resistance, and corrosion resistance at high temperatures, improving the spraying process performance of the alloy coating and increasing the deposition rate.

The application discloses a kind of multi-dimensional graph tensor fusion representation and embedding of code and application, belong to artificial intelligence field.It includes: extracting the syntax information and hierarchical structure information of source code file and binary file;Abstract Syntax Tree abstract syntax tree (AST), Data Dependence Graph data dependence graph (DDG), Control Flow Graph control flow graph (CFG), Natural Code Sequence natural language sequence (NCS) four different heterogeneous code graph structures are generated simultaneously to source code file and binary file;Four kinds of heterogeneous code graph structures are combined to generate high-dimensional graph tensor;Using Graph Tensor Convolution Network interpretable graph tensor convolution neural network (GTCN) to generate accurate code semantic embedding and capture code internal features, and related technology is applied in various downstream tasks, such as malicious code identification, in detection efficiency and accuracy rate aspect, good balance is achieved.

This invention discloses an anti-oxidation and wear-resistant composite coating for an alloy roller surface and its manufacturing process, comprising an alloy groove coating layer one, an alloy groove coating layer two, and an alloy working layer. Both alloy groove coating layer one and alloy groove coating layer two have sinusoidal structures, circumferentially staggered on the alloy roller surface. At least one set of intersection nodes is formed between adjacent alloy groove coating layers one and two, and anchoring nodes are provided at the intersection nodes. Alloy groove coating layers one and two are located inside the alloy working layer. This invention improves the interlayer bonding strength and reduces the thickness by improving the structure, materials, and process, while also enhancing impact resistance, thermal shock resistance, and corrosion resistance to a certain extent, and maintaining high hardness at high temperatures.

The application discloses a preparation method of modified ion exchange resin and application thereof, and relates to the technical field of water treatment materials. Resin, EDC.HCl and L-arginine are proportionally immersed into a solution system with pH being 5 (the solution system with pH being 5 is obtained by adjusting 1% dilute hydrochloric acid), to obtain solution A, the solution A is heated to 35-45 DEG C and placed in a magnetic stirring pot, the stirring speed is set to 280-300 rpm, and the reaction is continuously carried out for 5-6 hours, to obtain resin B and residual liquid B, the resin B is washed with deionized water and anhydrous ethanol alternately for 5-6 times, until the filtrate is neutral; the resin B is placed in a vacuum drying box, the temperature is set to 55-60 DEG C, the vacuum degree is set to -0.09 MPa, and the drying is continuously carried out until the weight is constant, to obtain the modified ion exchange resin. The grafting of L-arginine increases more active sites of the resin, the nickel ions can be effectively combined with the resin, and the adsorption capacity of the resin for the nickel ions is improved.

The application belongs to the field of water treatment, and discloses a plant tannin grafted composite magnetic flocculant and a preparation method and application thereof. The composite magnetic flocculant comprises polymeric aluminum ferric silicate, Chinese gallnut tannic acid, a grafting modifier, polyethyleneimine and sodium acetate buffer. After the natural green substance Chinese gallnut tannic acid is subjected to Michael addition by the grafting modifier, graft copolymerization is realized, a large number of positive charge points are provided, a stable complex is formed through winding and electrostatic interaction, more flocculation bodies can be bridged, more compact and tough alum flowers are formed, and magnetic medium material is put into the flocculation bodies when the flocculation bodies are formed, so that fine magnetic powder particles are used as precipitation nucleuses, a micro magnetic field is formed to promote the growth of the flocculation bodies, the efficient removal of TP is accelerated, the input of reagents and energy consumption is reduced, low-cost, high-efficiency and green TP removal of a sewage treatment plant is realized, the operation cost is reduced, and remarkable economic benefits are achieved.