13results about How to "Reduce spawn rate" patented technology

The application discloses a method for normalizing mixed C4 olefins containing isobutene. The method comprises the following steps: 1) adding 1-20wt% of tert-butyl alcohol into mixed C4 hydrocarbon; 2) feeding the obtained mixed raw material into a normalizing unit to generate normal butene under the conditions of 280-400 DEG C and normal pressure. The normalizing catalyst comprises the following components: a) 10-20wt% of a binder; and b) 80-90wt% of ZSM-35 molecular sieve. In the method, the tert-butyl alcohol can be hydrolyzed into isobutene and water in the reaction process, the isobutene can be used as the C4 raw material, the water can react with the C4 olefins to generate the intermediate product C4 alcohol, the C4 alcohol can be dehydrated to generate normal butene, and in addition, the water can play a role in inhibiting the hydrogenation of the raw material or the intermediate in the reaction system, thereby reducing the generation probability of alkanes and improving the selectivity of normal butene. The method can efficiently and stably convert the C4 olefins in the raw material into normal butene-rich product, and provides an effective way for synthesizing normal butene.

The invention belongs to the field of molecular genetics, and provides a rice SS3a allele and application thereof in increasing the content of resistant starch in rice and reducing the glucose generation rate. The gene is deleted at the 2387th basic group G of the third exon of the rice SS3a gene and contains a gene sequence as shown in SEQ ID No. 1. The allele can significantly increase the amylose content in rice and change the amylopectin structure, so that the resistant starch content of rice is significantly increased, and the glucose generation rate of rice is reduced. Meanwhile, the allele can also significantly improve the gelatinization characteristic and the viscosity characteristic of the rice, and has small influence on the grain weight of the rice. The invention further relates to application of the new SS3a allele in rice breeding, the allele can be introduced through a cross breeding method, or the original SS3a gene is subjected to site-directed mutagenesis to form the allele, and the allele is used for cultivating a new high-resistance starch rice strain.

A low-NOx ammonia-coal stable combustion swirl burner relates to the field of clean combustion of coal with low carbon and low NOx. This invention addresses the problems of ammonia slip and high NOx emissions in existing ammonia-coal co-combustion technologies. In this invention, a primary air / pulverized coal duct is fitted onto a central NH3 duct, forming a primary air channel between them. An outer NH3 duct is fitted onto the primary air / pulverized coal duct, forming an NH3 channel between them. An inner secondary air duct is fitted onto the outer NH3 duct, forming an inner secondary air channel between them. An outer secondary air duct is fitted onto the inner secondary air duct, forming an outer secondary air channel between them. Tangential and axial blades are respectively installed in the inner and outer secondary air channels. This invention is used for pulverized coal swirl combustion.

This utility model relates to the field of printed circuit board technology and discloses an inner layer edge structure of a circuit board, including: a first edge plate body disposed around the substrate body; a plurality of first flow-blocking beads equidistantly arranged on one or both sides of the edge plate body; and a plurality of second flow-blocking beads equidistantly arranged on one or both sides of the first flow-blocking beads, wherein the protruding area of ​​the second flow-blocking beads is larger than that of the first flow-blocking beads, and a first adhesive flow groove is formed between the first flow-blocking beads and the second flow-blocking beads to accommodate the flow of adhesive. This design can not only significantly reduce the flow velocity of the fluid and effectively prevent it from flowing outside the circuit board, thereby avoiding the problem of insufficient adhesive filling of the board pattern, but also the first adhesive flow grooves of different widths formed between the first and second flow-blocking beads of different sizes are interleaved, which can timely and evenly spread the adhesive of the insulating layer along the first adhesive flow groove, thereby ensuring uniform adhesive filling and reducing the probability of defective products.

This application relates to a spraying process for a highly corrosion- and wear-resistant yttrium oxide composite coating, aiming to solve the problems of high porosity, poor high-temperature stability, and insufficient wear resistance of existing yttrium oxide coatings. The process includes degreasing and cleaning, pure water immersion, sandblasting roughening, steam and water rinsing, ultrasonic cleaning, pre-drying, plasma spraying, orthogonal experimental parameter optimization, deep ultrasonic cleaning, and final drying and curing. A yttrium oxide and zirconium oxide composite powder is used to form a dense coating under optimized plasma spraying parameters, and high cleanliness is ensured through multi-stage cleaning and clean environment control. Through the above technical solution, this application significantly improves the coating's density, chemical stability, wear resistance, and thermal shock resistance, effectively blocks the penetration of corrosive media, reduces particulate contamination, and meets the stringent requirements of semiconductor etching equipment for long-lasting protective coatings.

This application relates to the field of security testing technology, specifically to a method and apparatus for generating fuzzy test data for vehicle-to-everything (V2X) security. The method includes: acquiring CAN bus data; calculating a parameter activity coefficient based on CAN bus frame data with the same ID in the real vehicle data, used to measure the activity and boundary conditions of various control commands in the real vehicle data; then combining the correlation between different IDs to perform temporal correlation feature measurement, and further calculating a random weight coefficient to measure the intensity of random transformation of each CAN bus frame data in the real vehicle data; and correcting the standard deviation of Gaussian noise based on the activity of different types of data and the dependencies between data, thereby generating test data for V2X security fuzzy testing. This application aims to generate test data that conforms to the statistical laws of vehicle communication, thereby improving the data pass rate in the underlying protocol stack and thus more effectively testing the upper-layer business logic.

The present application relates to the field of biological medicine, and specifically provides an anti-LILRB4 monoclonal antibody injection preparation, which comprises an anti-LILRB4 monoclonal antibody, a buffer salt, a protein protective agent, and a surfactant, wherein the pH of the injection preparation is 5.5-6.5. The injection preparation provided by the present application provides a good storage environment for the anti-LILRB4 monoclonal antibody through the synergistic interaction of different contents of the buffer salt, the protein protective agent, and the surfactant, and guarantees the biological activity of the anti-LILRB4 monoclonal antibody. The anti-LILRB4 monoclonal antibody can effectively inhibit the combination of the LILRB4 antigen and its ligand complex, thereby blocking the interaction with the ligand ApoE complex, preventing the activation of the downstream NF-kappa B signal pathway and the release of ARG1, preventing the inhibition of T cell proliferation and the promotion of tissue infiltration, and can be used for treating cancer.

The application provides a medium-nickel ternary precursor, a preparation method and a positive electrode material. The preparation method of the medium-nickel ternary precursor comprises the following steps: (1) first seeds with a median particle size D50 of 0.5-1 mu m and second seeds with a median particle size D50 of 2-3 mu m are prepared by a coprecipitation method; (2) the first seeds are used, and a ternary metal salt solution, a precipitant solution and a complexing agent solution are fed in parallel to perform a first coprecipitation reaction to obtain an inner core; then the second seeds are used, and a second coprecipitation reaction is continuously performed to form a transition layer on the surface of the inner core; a third coprecipitation reaction is continuously performed to form an outer shell on the surface of the transition layer; and (3) the obtained product is filtered, washed and dried to obtain the medium-nickel ternary precursor. The positive electrode material prepared by the preparation method has the advantages that the lattice expansion and contraction stress under high voltage can be effectively buffered, microcracks and interface side reactions can be inhibited, and the positive electrode material has high compaction density and processing performance.

The utility model relates to foundry technology field especially relates to a vertical directional glass casting mould, it contains four identical size L type cast iron unit, L type cast iron unit is set up as cast iron piece of right angle bending. L type cast iron unit is through end point butt joint or overlapping nested and is pasted and constitutes the mould with longitudinal cavity to make glass liquid can flow in the height direction of pouring opening based on mould. The technical scheme presented in the application not only significantly improves the quality and efficiency of glass casting, but also reduces defects, improves the yield and performance of products. These improvements not only improve the overall quality of the product, but also provide a more reliable material basis for subsequent processing and application, with wide application prospect and significant economic benefits.

This application relates to the field of glass processing technology and discloses a method for controlling the heat treatment of tempered glass with low self-explosion and high stability. The method includes the following steps: float soda-lime silicate glass sheets are heated and softened, then rapidly quenched. When the core temperature drops to 395℃~405℃, the air pressure is reduced, and a water-based polymer atomized heat transfer modulator is sprayed in. The temperature drops to 320℃, with a cooling rate of 12.0~18.0℃ / min. The temperature is then further reduced to 310℃~320℃ and cooled to 40℃ with pure air. The float soda-lime silicate glass sheets are then placed in a forced convection hot-dip furnace and heated to 255℃~265℃ for alternating circulation. The frequency difference between the top and bottom circulating fans is controlled to generate an in-plane temperature difference and additional in-plane alternating stress in the float soda-lime silicate glass sheets. After the process, the glass is cooled down at the same frequency and removed from the furnace. This invention employs a technical solution of spraying a water-based polymer atomized heat transfer modulator while the glass core temperature is reduced to a specific range, thus effectively constraining the local cooling rate within a reasonable range.

The invention relates to a flame-retardant smoke-suppression anticorrosive fiber material, a coating, a preparation method of the flame-retardant smoke-suppression anticorrosive fiber material and the coating containing the fiber material, and belongs to the technical field of functional coating materials. The preparation method of the fiber material comprises the following steps: (1) mixing and stirring a flame retardant, an organic solvent and a surfactant to obtain a core layer solution; (2) dispersing polyvinylidene fluoride-trifluoroethylene and inorganic nanoparticles in an organic solvent, and stirring to obtain a shell solution; and (3) simultaneously spinning the core layer solution and the shell layer solution to obtain the fiber material. After the coating of the fiber material is cured on the surface of a base material, a formed coating is a continuous fiber reinforced composite material and has flame-retardant, smoke-suppression, self-repairing and anti-corrosion properties at the same time. The inorganic nanoparticles are introduced into the shell layer and the thermal response type flame retardant is encapsulated in the core layer, so that the chemical activity or toxicity of harmful chemical substances is reduced through chemical adsorption, coordination binding and / or catalytic conversion under a fire or corrosion induction condition, and the flame-retardant smoke suppression, self-repairing and corrosion-resistant properties are synergistically realized.

The present application relates to the technical field of laser welding, and particularly relates to a collinear laser welding workstation based on modularization and a control method thereof, which comprises a base, a position moving unit used for carrying and moving aluminum plate to be welded, a laser welding unit used for emitting laser to a welding interface of the aluminum plate to form a molten pool, a monitoring unit used for monitoring the area of the welding interface, the burr quantity of the molten pool and the vibration intensity of the aluminum plate, and a control unit used for controlling the position moving unit and the laser welding unit to perform a welding test, and adjusting the laser welding temperature of the laser welding unit according to the area variation of the welding interface in the welding test, or correcting the target area of the welding interface according to the burr quantity of the molten pool, and adjusting the laser emission power according to the vibration intensity of the aluminum plate. The present application realizes the improvement of welding stability.

The invention relates to the field of molecular sieves, and particularly discloses a nano H-Beta molecular sieve, the grain size of which is less than 40nm. The XRD spectrum of the molecular sieve shows that the molecular sieve has the strongest peak at the 2theta angle of 23 degrees; the nano H-Beta molecular sieve disclosed by the invention is uniform in particle size, can improve diffusion of reactant molecules, and has good selectivity; the molecular sieve also has more exposed catalytic activity sites, so that the molecular sieve is good in catalytic activity and high in stability, the carbon deposition generation rate can be remarkably reduced, the catalytic efficiency of the molecular sieve is improved, and the molecular sieve is particularly suitable for being used as a catalyst and is particularly suitable for being used as a catalyst in preparation of diisopropylbenzene.