32results about How to "Growth rate inhibition" patented technology

The invention discloses a recycling method of waste powdered activated carbon. According to the technical scheme, the method comprises the following steps: soaking the waste powdered activated carbon generated during the refining of sodium glutamate with a hydrochloric acid in a pickling tank so as to remove partial ash and ferric salt impurities; and adding microorganisms for biological regeneration under the action of an electric field, thus finally preparing regenerated activated carbon. As the method is used, the purpose of treating the waste powdered activated carbon during the production of the sodium glutamate is realized; the recycling of resources is realized; the production cost is decreased. Thus, the significant economic and environment-friendly benefits are obtained.

The invention relates to the field of chemical wastewater treatment, in particular to a cathode and anode bed regeneration waste acid and alkali water treatment device for the chlor-alkali industry. In order to solve the technical problem that the waste acid and alkali water cannot be efficiently contacted with sea salt, which will inhibit the growth rate of new precipitation, and the flow of calcium precipitation into the next sedimentation tank will affect the precipitation of magnesium ions, the present invention provides such a chlor-alkali industrial The cathode and anode bed regeneration waste acid and alkali water treatment device includes a collection assembly, a stirring assembly, and a middle sleeve assembly, etc.; the main support is fixed with a middle sleeve assembly that provides a central collection chamber for sea salt. In this technical solution, a central isolation treatment chamber is added to react the newly introduced waste acid-base water with sea salt, and divert the newly formed sediment to the bilge in time to realize the high-speed growth of calcium precipitation, and at the same time discontinuously The generated precipitates are collected to keep the calcium precipitates in the cabin at a low level and further promote the high-speed growth of calcium precipitates.

The invention discloses application of a miR-100 inhibitor in preparation of a medicine for treating a breast cancer. The miR-100 inhibitor is a miR-100 antisense nucleic acid chain, and the sequence is 5'-TTCGGATCTACGGGTT-3'. The miR-100 inhibitor disclosed by the invention can induce apoptosis of tumor cells, growth of tumors in tumor transplanted mice can be effectively induced, the sensitivity of breast cancer cells on chemotherapy medicines is increased, the effect of chemotherapy is improved, and the miR-100 is a latent new target for the medicine for treating the breast cancer, and is a new path for medical therapy.

The invention discloses a high-temperature-resistant, high-strength and beryllium-copper-free wire and a preparation method thereof. The preparation method comprises steps: S1, high-purity copper, pure iron and a block-shaped covering agent are mixed, molten, kept at the constant temperature and stirred, a copper-nickel alloy, a copper-strontium alloy, a copper-indium alloy, magnesium rods and rare earth element lanthanum are added, the mixture is heated to 1,230-1,260 DEG C, stirred and molten, and copper alloy melt is obtained; S2, component detection is performed on the copper alloy melt; S3, the copper alloy melt obtained in S2 is introduced into a high-vacuum single-roll rotary quenching and spray casting system and heated to 950-970 DEG C for spray casting, air is introduced after cooling, and a thin strip is obtained after balance of atmospheric pressure; S4, the thin strip is subjected to continuous annealing and homogenization in a magnetic field under the condition of 590-630 DEG C, and the high-temperature-resistant, high-strength and beryllium-copper-free wire is obtained through cold rolling and ageing treatment. With the iron-copper alloy as a basis, multiple alloy elements are added in a matched manner to replace conventional beryllium copper alloy materials, the cost is reduced, a reasonable preparation process is matched, and the comprehensive performance of the material is improved.

The invention discloses a method for slowing membrane pollution in a membrane capacitance deionization system. The method is based on a biological treatment method, EDTA (ethylene diamine tetraacetic acid) with a certain concentration is added into inflow water with microbial carriers, and forming of membrane pollution is slowed by soluble calcium salt and ammonium chloride. By the method, the membrane capacitance deionization system can effectively inhibit growth rate of a biological membrane in long-time desalination treatment, the thickness of a gel layer of the surface of the membrane is remarkably reduced, the desalination efficiency of the membrane capacitance deionization system is greatly improved, and the method solves the problem of serious membrane pollution in the membrane capacitance deionization system to some extent, so that the service life of the membrane is prolonged.

The invention belongs to the technical field of storage preservation of agricultural products, and particularly relates to a preservation method for mulberries. The method is implemented by the following steps: (1) preparing raw materials, wherein the storage mulberries are mature fruits free of mechanical damage and pest and disease damage; (2) performing short-time pressure reduction treatment, to be specific, separately packaging the mulberries in step (1) in PET (polyethylene glycol terephthalate) plastic boxes, placing the separately packaged mulberries in a (45-65)+ / -5kPa pressure tank, taking out the mulberries from the pressure tank after 12 to 24 hours, and placing the mulberries under normal pressure; (3) storing the mulberries in a cold storage or an air-conditioning cold storage until a storage period is ended. According to the method, the problems of short storage period and high rotting rate of a conventional mulberry storage method are solved, the storage period of the mulberries is prolonged from original 1 day to 3 to 8 days, and compared with a chemical substance preservation method, the method has a safety advantage.

The invention discloses a method for preparing nano silver powder in viscous medium. The method comprises the following steps of: mixing sodium nonylphenol polyoxethyiene ether sulfate, TEA dodecylbenzenesulfonate, ammonium dodecylbenzenesulphonate, coconut oil alcohol acylamide, octadecyl dimethyl amine oxide, sodium carboxymethylcellulose, polyoxyethylene glycol 6000 bisstearate, ethylenediamine tetraacetic acid disodium salt, ethylene oxide, benzotriazole and deion water and stirring uniformly, preparing the viscous medium, adding silver acetate and silver lactate and stirring uniformly, adding sodium hypophosphite and stirring till full reaction, then adding the deion water for dilution according to a ratio of 1:1.5 of the all material amount to the deion water, reducing the viscosity, and obtaining the nano silver powder by pressure filtration, washing with the deionized water, washing with acetone and vacuum drying. The selected raw materials are easily obtained; the method is short in production process, high in production efficiency, low in production cost and low in energy consumption; the powder is not easily agglomerated, and the powder has good dispersibility; and the method is suitable for large-scale production, and solves the problems that the nano silver powder prepared by the conventional chemical preparation method is easily oxidized and easily agglomerated.

The invention discloses a method for obtaining fine primary alpha-Al equiaxed grains in a zinc-aluminum alloy. The method comprises the steps of melting the zinc-aluminum alloy to 100-200 DEG C above the liquidus line so as to obtain a zinc-aluminum alloy melt; simultaneously adding zirconium, cerium and magnesium elements into the zinc-aluminum alloy melt, continuously keeping the temperature for 8-20 minutes and carrying out efficient stirring to enable the zirconium, cerium and magnesium elements to be uniformly distributed in the zinc-aluminum alloy melt so as to obtain the final alloy melt; and pouring the final alloy melt into a mold, and carrying out cooling so as to obtain the zinc-aluminum alloy containing the fine primary alpha-Al equiaxed grains. The method has the advantage that the obtained fine unramified spherical or polyhedral alpha-Al axial grains can generate the advantageous effect on the optimization, the casting processing performance and the use performance of the structure of the zinc-aluminum alloy.

The invention provides a preparation method of anatase nanometer titanium dioxide with an exposed high-activity crystal surface. According to the method, isopropyl titanate is used as a titanium source; isopropanol and 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid are used as morphology control agents; acetic acid is used as a reaction solvent; the nanometer titanium dioxide is prepared by a solvothermal method. The anatase nanometer titanium dioxide containing rich {001} crystal surfaces is prepared by regulating the mole ratio of the acetic acid to the isopropyl titanate, the solvothermal reaction temperature and the solvothermal reaction time. The product prepared by the method has the advantages of high exposure rate of high-activity crystal surfaces {001}, safety, environment-friendly effect and the like.

The invention discloses a method for preparing nano copper powder in a micromolecular viscous medium. The method comprises the steps of: by taking a surface active agent, salt, a complexing agent, an antifoaming agent, an antioxidant, cupric salt, a reducing agent and deionized water as raw materials and according to the proportion of (0.001-95 percent) : (0.001-95 percent) : (0.001-80 percent): (0.001-75 percent): (0.001-70 percent): (0.001-75 percent): (0.001-70 percent): (0.001-98 percent), preparing the micromolecular viscous medium by using the surface active agent, the salt, the complexing agent, the antifoaming agent, the antioxidant and the deionized water; adding the cupric salt and uniformly mixing; adding the reducing agent and mixing; adding the deionized water to dilute so asto reduce the degree of viscosity according to a mass ratio of 1:0.5-10 of the total quantity of all materials abovementioned to the deionized water after the reaction completes; and obtaining nano copper powder through filter-pressing, deionized water washing, acetone washing and vacuum drying. According to the method disclosed by the invention, the raw materials selected in the invention are easily available, the manufacturing technique is simple and short, the production efficiency is high, the production cost and the energy compunction are low, and powder has low possibility of agglomeration and has good dispersibility, therefore the method is suitable for large-scale production and solves the problems of easy oxidation and easy agglomeration of the nano copper powder existing in the traditional chemical preparation method.

The invention discloses a zinc-aluminum-yttrium master alloy refiner. The zinc-aluminum-yttrium master alloy refiner is characterized by comprising the following components: 2-7% of Y, 12-45% of Al and the balance of Zn, wherein the element Y is embedded in the zinc-aluminum alloy matrix in the form of YZnb-aAla or YAl3-cZnc compound particles, a is larger than 0 and smaller than 5, b equals to 8.5, 10 or 12 and c is larger than 0 and smaller than 1. The invention further discloses a preparation method and application of the zinc-aluminum-yttrium master alloy refiner. According to the zinc-aluminum-yttrium master alloy refiner and the preparation method as well as application thereof, the zinc-aluminum-yttrium master alloy refiner prepared by adopting the preparation method can be added into hypoeutectic zinc-aluminum alloy, so that fine-sized and unramified spherical or polyhedral primary Eta-Zn equiaxed grains can be obtained, and an advantageous effect on the microstructure optimization, casting technique property and use performance of the zinc-aluminum alloy is realized.