30results about How to "Reduce the degree of decomposition" patented technology

The invention discloses bacillus licheniformis, a screening method, application and a feed containing the bacillus licheniformis. The bacillus licheniformis is reserved at a China center for type culture collection, and the reservation number is CCTCC M 2019165. The screening method comprises the steps of collecting soil samples, culturing and dividing bacterial strains, separating and purifying the bacillus licheniformis, conducting molecular identification, conducting biochemical identification, and identifying and screening out the bacillus licheniformis according to a molecular identification result and a biochemical identification result. The screened bacillus licheniformis is used for preparing mulberry silage, the protein content of the feed is increased so that animals can have sufficient nitrogen source supply, the content of crude fiber needs to be reduced so that the animals can have more easily decomposed carbohydrates, the ratio of ammoniacal nitrogen to total nitrogen needs to be reduced so that the protein of the silage and the decomposition degree of amino acid can be reduced, and thus the silage with better quality can be formed.

The invention relates to a method for extracting and recovering hemicelluloses in squeezed waste alkalis, belongs to the chemical fiber making industry field, and especially belongs to the processing field of the squeezed waste alkalis in the viscose fiber production making process. Hemicelluloses in the squeezed waste alkali are recovered through neutralizing, precipitating, filtering and drying steps. The method adopts alkalescence as a neutralizing end point, and the polymerization degree of the hemicelluloses is high, so the recovery rate can reach above 80%. The finally obtained hemicelluloses comprise 95% or more of the hemicelluloses (oven dry) and 0.5% or less of ash, and can be sold directly or exploited as a next-step synthesis raw material.

The invention discloses a determination method for OCPs in an environmental sample, which belongs to the field of detection of OCPs. The determination method comprises the following steps: carrying out Soxhlet extraction on a to-be-determined environmental sample so as to obtain a liquid extract containing OCPs; carrying out separation and purification, i.e., concentrating the liquid extract to a constant volume, adding an aqueous solution of tetrabutyl ammonium sulfite and isopropanol, carrying out oscillation until a solid residue is generated after repeated shaking every time, discarding a lower layer, retaining an organic phase, washing the organic phase, removing water by using anhydrous sodium sulfate, carrying out purification by using a Florisil column so as to obtain an eluate, concentrating the eluate to a constant volume and dividing the concentrated eluate into two groups which are used as samples for subsequent detection, wherein one of the groups is a sample of OCPs stable in sulfuric acid and is purified by using a sulfuric acid silica gel column so as to obtain a purified sample, and the other of the groups is a sample of OCPs instable in sulfuric acid and is purified by using an Envi-carb SPE small column so as to obtain a purified sample; and carrying out determination, i.e., respectively analyzing and determining the two groups of purified samples by using an HRGC-HRMS apparatus so as to obtain determination results of the content of OCPs in the two groups of purified samples. The determination method provided by the invention enables accuracy and sensitivity of determination to be improved.

The invention discloses a neutralization method of a chlorination solution. The neutralization method comprises the steps as follows: cooling the chlorination solution, then, adding a weak alkaline aqueous solution for neutralization until the pH value is 5.5-7.5, adding a strong alkaline aqueous solution for neutralization until the pH value of the reaction solution is 8.5-9.5, finally, adding aconcentrated hydrochloric acid aqueous solution to the reaction solution, and adjusting the pH value of the reaction solution to 6.5-7.5. The weak alkaline aqueous solution and the strong alkaline aqueous solution are combined for use, excessive hydrolysis of sucralose-6-acetate is effectively inhibited in the chlorination solution neutralization process, and the yield of sucralose-6-acetate is increased; meanwhile, the decomposition degree of a DMF solvent in the system is slowed down, and loss of the solvent is reduced. Non-ammonia nitrogen alkaline solutions are used, low-concentration DMFwastewater is fully utilized as water for alkali dissolution, the wastewater treatment cost in the production process is reduced, and the production cost is reduced.

The invention belongs to the technical field of polymeric materials and particularly relates to a nylon wire for 3D printing and a preparation method thereof. The nylon wire for 3D printing is made from 50-90 parts of nylon 12 granules, 10-30 parts of talcum powder masterbatch, 5-25 parts of a maleic anhydride grafted polymer, 2-10 parts of a coupling agent, 0.5-2 parts of an antioxidant, 0.2-1.5parts of a lubricant, and 1-5 parts of color masterbatch. The preparation method herein includes the steps of drying materials, mixing at high speed, blending and extruding for granulating, drying forthe second time, and extruding a wire. The nylon wire for 3D printing provided herein has low cost, good processing convenience, low shrinkage, good stability and high mechanical strength; a printedarticle is free of evident warping and has high precision.

An object of the present invention is to provide a conductive coating film formed of a copper paste on an insulating substrate which has a good conductivity and a good adhesion property to the insulating substrate. The process for producing a conductive coating film according to the present invention comprising the steps of applying a copper paste comprising copper particles, a binder resin and a solvent as main components onto an insulating substrate to form a coating film on the substrate, and then drying the coating film to obtain a copper powder-containing coating film; treating the copper powder-containing coating film with an organic acid or an organic acid salt; and subjecting the thus treated copper powder-containing coating film to heat treatment with superheated steam. According to the present invention, it is possible to obtain a conductive coating film having a good conductivity and a good adhesion property to the insulating substrate.

The invention discloses a pleurotus eryngii cultivation material containing pleurotus eryngii residues and a preparation method thereof, and belongs to the field of edible fungus cultivation materials and preparation methods thereof. The cultivation material is prepared from the following raw materials in parts by mass: 55.0-65.0 parts of a fermented main material, 8.0-12.0 parts of soybean meal, 6.0-9.0 parts of corn meal, 18.0-22.0 parts of wheat bran, 1.0-3.0 parts of lime and 1.0-3.0 parts of light calcium carbonate. The fermented main material is mainly prepared by mixing and fermenting bagasse, mushroom residues, corncobs and saw dust in a mass ratio of 1 to 1.1 to 2 to 2. The preparation method comprises the following steps: A, cleaning pleurotus eryngii residues; B, screening the pleurotus eryngii residues; C, prewetting; D, mixing, composting and fermenting the bagasse, residues, corncobs and saw dust; E, turning; F, screening the mixed material; and E, adding the soybean meal, corn meal and other auxiliaries. According to the cultivation material, the raw material cost can be remarkably reduced, and the cultivated pleurotus eryngii has the advantages of high yield, high quality, small budding amount, low pollution and improved biological efficiency.

The invention discloses a household ozone generator, and belongs to the technical field of ozone generators. The household ozone generator comprises an outer frame, the left side surface of the outerframe is fixedly connected with the right side surface of a support frame, the lower surface of the inner wall of the support frame is fixedly connected with the lower surface of a first water tank, the right side surface of the first water tank communicates with the left end of a filter, and the filter is clamped on the left side surface of the inner wall of the outer frame. According to the household ozone generator, the first water tank, a water inlet pipe, a water outlet pipe, a first connecting pipe, a second connecting pipe, a water injection frame, the outer frame and the supporting frame are arranged, so that the flow velocity of air around the first water tank is increased, and then water flow in the water injection frame takes away heat on the surface of an electrolysis ozone generator main body. According to the device, the cooling process of water flow on the electrolysis ozone generator main body can be realized while water is added for electrolysis to prepare ozone, the probability of temperature rise is reduced, the degree of ozone decomposition caused by heat in the working process can be reduced to a certain extent, and the ideal ozone preparation efficiency of thedevice is ensured.

The invention discloses fumigated jujubes. The fumigated jujubes comprise the following components: cold-shock jujubes and compound smearing microcapsules. The fumigated jujubes comprise the cold-shock jujubes and the compound smearing microcapsules. The cold-shock jujubes are subjected to pulse electric field boiling and ultrasonic cold shock during preparation, so that the jujube skin is purplein color, thin, shallow and uniform in wrinkles and complete in appearance, and the pulp is elastic. The compound smearing microcapsules not only strengthen the metal nutrient elements such as calcium, iron, zinc and selenium, but also strengthen non-metallic nutrient elements such as fat, dietary fibers, vitamins and amino acids, and simultaneously enhance the jujube flavor of the product. The fumigated jujubes are rich in nutrients, and the fumigated jujubes also enrich food variety, and greatly meet the requirements of consumers.

The present invention first prepares exchange salt, adopting silver nitrate and potassium nitrate mixture, wherein the mass ratio of silver nitrate and potassium nitrate being 1: 8-1 : 10, uniformly stirring, preliminary drying waveguide piece and prepared salt in far infrared oven for removing moisture, then heating up to 350 degree centigrade, to proceed ion exchange by putting waveguide piece in melting salt, taking out waveguide piece and natural cooling, whole process being processed on lucifugal condition. The present invention reduces silver nitrate extent decomposition, raising waveguide surface ionic exchange quality, thereby improving made Erbium waveguide amplifier surface quality.