30results about How to "Improve chemical structure" patented technology

The invention relates to a planting method of imitating wild Polygonatum, the following processing equipment is used in the planting method of imitating wild Polygonatum, the processing equipment includes a floor frame, a material distributing device and a planting device, the bottom frame is a U-shaped structure, the bottom frame A planting device is installed in the middle of the upper end, and a material distributing device is arranged above the planting device, and the material distributing device is installed on the bottom plate frame. The present invention can solve the problem that when the existing Rhizoma Polygonatum is planted and processed, manual cultivation is usually carried out manually, which has high labor intensity and low efficiency, which is not conducive to the large-scale planting of Rhizoma Polygonatum, and when the existing equipment is planting Rhizoma Rhizoma Polygonatum, planting The effect is poor, the efficiency is low, and the seedlings after planting are prone to dumping. At the same time, the seedlings cannot be effectively protected during the planting process, which is easy to cause damage to the seedlings and affect the survival rate of the seedlings.

The invention discloses a preparation method of micro-branched micro-crosslinked polyacrylamide. The preparation method comprises the following steps: adding an acrylamide monomer of which the mass percent is 20-30% into water; then adding dimethylaminoethyl methacrylate, persulfate, a chain transfer agent, EDTA and manganese acetylacetonate, regulating the pH value to 5-8, and initiating a polymerization reaction at 20-40 DEG C; after 5-10 hours of reaction, taking out a colloid, and performing granulation; and the adding NaOH accounting for 1.5-3% of the mass of the colloid, and performing hydrolysis at 80-100 DEG C for 1-3 hours to obtain the finished product. The micro-branched micro-crosslinked polyacrylamide prepared by the method disclosed by the invention has high viscosity, and has excellent thermal stability and mechanical shearing resistance; and experiments indicate that the viscosity retention rate of the micro-branched micro-crosslinked polyacrylamide disclosed by the invention after mechanical shearing is more than 81%, and the viscosity retention rate after 90 days of aging is 79% or above. The method disclosed by the invention has the advantages of mild reaction conditions, simple operation process, low cost and the like.

The invention relates to a method of producing ethylene carbonate by catalytic addition from ethylene oxide and CO2. In the method, under the effect of an environment-friendly ionic liquid catalyst, the CO2 and the ethylene oxide are added to prepare the ethylene carbonate. When the reaction temperature is 90-130 DEG C, the reaction pressure is 1-3 MPa, the stirring speed is 200-300 r / min and the reaction time is 1-2 h, the conversion rate of the ethylene oxide reaches more than 98% and the yield of the ethylene carbonate reaches more than 94%. Conversion rate and yield are both higher than 90% even the catalyst is repeatedly used for seven times.

The invention discloses a synthesis process of horseradish peroxidase enzymelabeled zearalenone. In the synthesis process, a carboxylated product is obtained by carboxylating zearalenone, and the horseradish peroxidase enzymelabeled zearalenone is obtained by a condensation reaction of the carboxylated product and horseradish peroxidase enzyme. The preparation process of detecting the key component horseradish peroxidase enzymelabeled product in the CLIA (Chemiluminescence Immunoassay) field is a formidable difficult all along. Accordingly, the synthesis process of the horseradish peroxidase enzymelabeled zearalenone, which is provided by the invention, is simple and practical and has low cost and favorable market application prospects.

The invention discloses an energy-saving enhanced defibrination method for composite pretreatment and production of viscous paper pulp. The method comprises the following steps that (1) paper pulp fibers are dissolved in water, even defibering is carried out, and then pretreatment is carried out; (2) biological enzymes are added to the treated paper pulp for treatment, the dosage of the biological enzymes ranges from 10 IU / g to 60 IU / g, the temperature ranges from 40 degrees to 60 degrees, the pH value ranges from 6 to 9, the concentration of the paper pulp ranges from 3 wt% to 8 wt%, and treatment is carried out for 10 min to 30 min; (3) continuous millstone milling and beating are carried out on the pulp of the step (2), and the pulp is stored for standby application. The method remarkably improves the efficiency of subsequent biological enzyme treatment, and overcomes the defects that enzyme treatment time is too long in biological enzyme assistant defibrination production and energy conservation in defibrination and the physical strength of finished paper formed by fibers cannot be achieved at the same time, the defibrination energy consumption and the defibrination time for producing the viscous paper pulp are saved, the defibrination energy consumption of chemical bleached needle wood pulp and chemithermomechanical pulp of needle wood is reduced by 15%-45%, and the physical properties of finished paper formed by pulp fibers can be improved.

The invention discloses a manufacturing method for an interlocked armored aluminum alloy flat cable. According to the manufacturing technology, the manufacturing method comprises the following steps in sequence: drawing wires, stranding a conductor, annealing the conductor, extruding an insulating layer, extruding a lining layer, and pressing an interlocked armored layer, wherein the conductor annealing step comprises the steps: through boxcar type heating and annealing steps, heating the stranded conductor to 370-400 DEG C, lasting for 4-5 hours at the environment of 370-400 DEG C, and then naturally cooling to the room temperature; and the interlocked armored layer pressing step is that an aluminum alloy tape with the thickness of 0.5mm-0.6mm is arranged on the surface of the lining layer and pressed into a Z-shaped interlocked armored form with the arc-shaped height of 2mm-4mm according to pitches of 6mm-24mm. according to the manufacturing method, the conductivity property and creep property can be improved, the service life of the cable can be effectively prolonged, the system can have good radiating effect in short time under overload state, and can be ensured to run safely.

The invention discloses an optical plastic protective coating and a preparation method thereof. The optical plastic protective coating is calculated in parts by weight, that is, 2 parts of ethyl orthosilicate, 5-6.5 parts of phenyltrimethoxysilane, 1.5-2 parts of coupling agent, 3-4 parts of distilled water, 0.02 ~0.03 parts of curing agent and 0.02~0.04 parts of catalyst were added to the container in turn, stirred and left at room temperature for 24 hours, the obtained colorless and transparent liquid was coated on the optical plastic plate and dried at 80°C, and then placed on the optical plastic plate The resulting layer of coating is the optical plastic protective coating. The optical plastic protective coating has the characteristics of high light transmittance, high hardness, etc., and can be widely used in the field of optical plastic protection, and can also be used in the fields of coatings, inks, and the like.

The invention relates to a peanut lysophosphatidic acid acyltransferase gene AhLPAAT1 and application thereof, belonging to the fields of molecular biology and biotechnology. The gene cDNA nucleotide sequence of the AhLPAAT1 is disclosed as SEQ ID NO:1, and the amino acid sequence of the coding protein is disclosed as SEQ ID NO:2. The peanut lysophosphatidic acid acyltransferase gene has the actions of changing the fatty acid content in plant tissues and especially seeds and enhancing the proportion of polyunsaturated fatty acids, and has wide application prospects in the fields of plant species breeding and agricultural production. The invention also relates to a transgenic plant with AhLPAAT1 gene. The invention also relates to a method for changing the fatty acid content in plant seeds and component proportion by using the AhLPAAT1 gene.