37results about How to "Fast enrichment" patented technology

The invention provides a method for producing a high-strength and elongation product automobile steel plate by a continuous annealing technology, belonging to the technical field of an automobile steel plate. The method comprises the following steps: based on the reasonable chemical component design and the alloy element partition, firstly, obtaining transition carbide with fine dispersion distribution by a cold rolled plate coil importantly, and promoting austenite inverse phase transformation through the solid solution of the fine carbide through two-phase region annealing, to obtain more and stable austenite phases to be remained. According to the method, the strict technological conditions for forming the finely-dispersed carbide and the strict interval for carrying out the technological parameters of the two-phase region annealing are given, so that the method has the advantages that the continuous annealing plate coil which is even in performance and good in surface quality can be obtained due to the short-time annealing of the existing continuous annealing production line of a steel factory, wherein the strength of the steel plate is 0.6-1.2GPa, the percentage elongation of the steel plate is 45-20%, and the product of strength and elongation is 25-40GPa%.

The invention discloses a method for quickly starting a shortcut nitrification reactor. The method comprises the following steps: after performing inoculation on the reactor, firstly performing overaeration, and applying an aeration impact so as to accelerate the elimination of anaerobic bacteria in sludge; quickly enriching nitrifying bacteria, and then applying a combined load impact comprising a substrate concentration impact and a hydraulic retention time impact so as to quickly restrain and eliminate nitrite oxidizing bacteria; finally, under the condition that an appropriate substrate concentration and an appropriate hydraulic retention time are maintained, increasing the concentration of an inorganic carbon source so as to enrich ammonia oxidizing bacteria and accelerate the accumulation of nitrite. According to the invention, the various continuous impacts are combined, the enrichment of the ammonia oxidizing bacteria in the sludge is accelerated within a shorter time, and the quick start of the shortcut nitrification reactor is realized.

The invention discloses a novel method and a novel apparatus for enriching and separating metal ions in sewage. According to the invention, vessels are connected to two ends of a separating column filled with an ion exchange separation medium; a sewage sample and a high-concentration background ion solution are respectively added into the vessels; high direct-current voltage is applied on the two ends of the separating column; under the effect of electric fields, the metal ions in the sewage form electrophoresis currents, such that the metal ions are rapidly enriched to the ion exchange separation medium with a set orientation; based on a field reinforcing effect caused by a factor that the concentration of the background ion solution is higher than that of the sample solution, the metal ions are enriched into a narrow band at an inlet of a channel. The enriching apparatus is advantaged in convenient application, simple structure, compatibility with various detections, high enriching efficiency, high enriching speed, easy configuration, and easy operation. With the apparatus and the method, high-rate enrichment of trace-amount heavy metal ions which are hard to detect in water can be realized, and primary separation can be carried out upon different metal ions.

The invention discloses an adhesive resin for multilayer coextrusion barrier package and a barrier structure prepared from the same. The adhesive resin comprises the following components in parts by weight: 85-55 parts of propylene-ethylene-alpha olefin copolymer, 5-15 parts of vinyl elastomer and 10-30 parts of functionalization modified propylene-alpha olefin copolymer. The barrier structure comprisesa barrier layer, wherein at least one surface of the barrier layer is bonded with a polypropylene layer through an adhesive layer; the adhesive layer is the adhesive resin in the first target; the barrier layer is an ethylene-vinyl alcohol copolymer or nylon; and the adhesive resin accounts for 10-15 wt% of the barrier structure. The adhesive resin has the advantages of favorable bonding property, favorable working properties, fewer crystal points, high transparency and the like.

The invention discloses a composite hemostatic material for external trauma and a preparation method thereof. The hemostatic material comprises a porous material, a metal oxide and a high molecular polysaccharide, and the mass ratio is 1: 0.50-0.01: 5-0.05, and the pore size range of the porous material is 1 nm-100 mu m. The material has porous structure, can quickly adsorb various proteins in blood, so that coagulation factors are enriched in macropores. The chitosan hydrogel provides a positively charged surface, accelerates the enrichment rate of coagulation factors, and further acceleratesthe coagulation reaction. And the material has good biocompatibility, and can be used in animal models of rat femoral artery trauma for effective hemostasis. The hemostatic material can be made intopowder or added into fabric to make tourniquet, hemostatic sponge and other forms, and is suitable for complex wounds. The hemostatic process does not exothermic has higher safety, and the hemostaticmaterial can still retain efficacy after moisture absorption, and is convenient for long-term storage.

The invention discloses an ionic imprinting material for enriching ultratrace methyl mercury in a water body and a preparation method and application of the ionic imprinting material. A silicon dioxide microsphere serving as a carrier, methyl mercury chloride and pyrrolidinecarbodith which serve as templates, methacrylic acid serving as a functional monomer, TMPTMA serving as a crosslinking agent and azodiisobutyronitrile serving as an initiator are synthesized to form a silicon dioxide microsphere, on the surface of which a three-dimensional cavity ionic imprinting polymer with a methyl mercury ion structure is arranged. The ionic imprinting material has the advantages of short enrichment time, simplicity in operation, high specificity, high enrichment capacity, low cost and the like and can be used for quickly pre-enriching and separating ultratrace methyl mercury ions in various water samples.

The invention discloses a method for extracting huperzine A. The method comprises the following steps: soaking huperzia serrata with an acidic organic solvent to extract total huperzine, adjusting pHvalue after concentration, and then carrying out extraction, decoloration and mud flocculation, recrystallization, normal phase column chromatography and recrystallization to obtain huperzine A. The method is simple and easy in operation, little in pollution, short in production cycle, low in cost and high in yield, and is applicable to industrial application and market popularization.

The invention provides a method for extracting lead, zinc and silver in lead-zinc-silver composite sulfide minerals. The method comprises the steps of adding pulverized coal and quicklime powder intoa composite raw mineral material containing lead and/or zinc and/or sliver to be mixed evenly to form a mixture, conducting pelletization on the mixture; conducting vacuums heating reduction on the pelletized mixture, controlling the heating temperatures according to the components extracted from the minerals correspondingly, collecting the obtained lead and/or zinc and/or sliver metal steam in acondensing mode to obtain a collected condensation product which is the mixture of the lead and/or zinc and/or sliver. The method has the advantages of convenient operation, safety, sanitation and non-pollution. The method is used for enriching metallic-state lead and zinc has the advantages of high enrichment speed, high production efficiency and small pollution. The method is used for separatingmetals in the minerals and has the characteristics of short technological process, short cycle, high efficiency and high resource comprehensive utilization rate. The separation and extraction efficiency of the metals can be greatly improved. By means of the method, the direct yield rates of lead and zinc can reach up to 98% or more.

The invention relates to a graphene oxide/molecular imprinting filtering membrane for detecting propranolol, as well as a preparation and an application thereof. Specifically, the invention discloses a method for detecting propranolol in a detected sample by adopting the graphene oxide/molecular imprinting filtering membrane and a metallic nanometer grain combined raman technique. The detection method has the advantages of high sensitivity, simple and convenient operation, less time consumption, low cost, and the like.

The invention discloses an antioxidant active peptide based on wheat germ protein zymolyte and a preparation method by ultrasonic electrophoresis separation. The preparation method comprises the following key stages of raw materials: 1, mixture of wheat germ and water; 2, compound raw materials; and 3, electrophoresis raw materials. By the method, the raw materials with low cost can be used, and antioxidant active peptide with consistent molecular weight is obtained; and secondary purification is performed by using a semipermeable membrane so as to obtain the antioxidant active peptide with high purity.

The invention discloses a method for detecting Y. enterocolitica, which comprises the steps of (1) taking a sample to be detected under an aseptic condition, adding the sample into a PBS buffer solution containing Al(OH)3, and homogenizing to obtain a sample bacteria solution; (2) carrying out water-bath heat treatment on the sample bacteria solution, performing centrifugation, discarding the supernatant, and collecting thalluses; (3) adding Y. enterocolitica immune-magnetic beads into the thalluses, standing on a magnetic shelf for layering after oscillation, discarding the upper layer, obtaining Y. enterocolitica immune-magnetic beads attached with the thalluses, eluting the Y. enterocolitica immune-magnetic beads attached with the thalluses by an eluant, then adding the PBS buffer solution into the eluted Y. enterocolitica immune-magnetic beads, and uniformly mixing to obtain a sample solution to be detected; and (4) culturing, observing and detecting the sample solution to be detected. The detection method provided by the invention is high in specificity and sensitivity, and can effectively shorten the detection time and reduce the detection cost.

The invention discloses a method for separating and purifying boron-10 and boron-11, belonging to the technical field of separation and preparation of isotopes. The method comprises the following three steps: the preparation of sample introduction liquid for a simulated moving bed; pretreatment of an ion exchange chromatographic column; and sample introduction and gradient elution. According to the method, the enrichment rate of <10>B can be increased to about 95% compared with a natural enrichment of 20%, and the speed of enrichment is fast; a simulated moving bed chromatographic separation system is used, so a long chromatographic column is not needed in the entire separation process, thereby reducing production cost; and gradient elution is utilized, so the purposes of reducing band migration distance and shortening separation period are achieved.

The invention discloses a method for realizing secondary purification by using a semi-permeable membrane. Key raw materials used in the invention comprise a wheat germ and water mixture 1, a composite raw material 2 and an electrophoresis raw material 3. Anti-oxidative bioactive peptides having a consistent molecular weight can be obtained by using low-cost raw materials through the method, and highly-pure anti-oxidative bioactive peptides can be obtained through the secondary purification by using the semi-permeable membrane.