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

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 relates to a method for planting plants by improving a shallow groove and restoring salinate fields in situ; the method comprises the following steps: for planting different plants, shallow-groove strip tillage is carried out on the salinate; a layer of cornstalk, a layer of cow dropping and a layer of cornstalk are laid at the bottom of the groove, then a saline-alkali reducing agent is applied, and then a layer of artificially improved soil which is mixed by luvisol dug from the tillage and artificial biological substrate matured by the cornstalk and the cow dropping in advance is applied; finally, the seeds of the plants is spread into the artificially improved soil, watered and surefooted and field management is carried out; and a layer of cornstalk is laid between the adjacent shallow grooves, the luvisol is used for building a ladder-shaped drainage ditch which is communicated with a water-collecting tank, thus draining excessive water in rainy season.

The invention discloses an optical plastic protection coating and a preparation method thereof. The optical plastic protection coating comprises the following raw materials in parts by weight: 2 parts of ethyl orthosilicate, 5-6.5 parts of phenyl trimethoxy silane, 1.5-2 parts of a coupling agent, 3-4 parts of distilled water, 0.02-0.03 part of a curing agent and 0.02-0.04 part of a catalyst. The preparation method comprises the following steps: adding the raw materials into a container, stirring, standing at the room temperature for 24 hours to obtain colorless transparent liquid, coating an optical plastic plate with the liquid, and drying at 80 DEG C to form a layer of coating on the optical plastic plate, wherein the coating is the optical plastic protection coating. The optical plastic protection coating has the characteristics of high transparency, high hardness and the like, can be widely used in the field of optical plastic protection, and also can be used in the fields of coatings, printing ink and the like.

The method for forming a pattern of the intermetal insulating film includes (a) a stage of successively forming a lower etching preventing film 2, a lower insulating film 3, an upper etching preventing film 4, and an upper insulating film 5 on a semiconductor substrate to which lower wiring 1 is formed, (b) a stage of forming a via hole to expose the lower etching preventing film by patterning the upper insulating film, the upper etching preventing film, and the lower insulating film, (c) a stage in which the vial hole is irradiated with UV light, (d) a patterning stage by forming a photo-resist film on the whole face of the semiconductor substrate in which the via hole is formed, (e) a stage of forming a wiring groove passing through the via hole on the upper insulating film by patterning the upper insulating film by making the photo-resist pattern 6 as an etching mask, and (f) a stage of exposing the upper part of the lower wiring.

The invention relates to a wild planting-imitating planting method of polygonatum sibiricum. The wild planting-imitating planting method of polygonatum sibiricum adopts the following processing equipment, the processing equipment comprises a bottom plate frame, a material distributing device and a planting device, the bottom plate frame is of a U-shaped structure, the planting device is installedin the middle of the upper end of the bottom plate frame, the material distributing device is arranged above the planting device, and the distributing device is mounted on the bottom plate frame. Thepolygonatum sibiricum planting device can solve the problems that when existing polygonatum sibiricum is planted and processed, manual cultivation is usually carried out manually, manual planting is high in labor intensity and low in efficiency, large-scale planting of polygonatum sibiricum is not facilitated, and when existing equipment is used for planting polygonatum sibiricum, the planting effect is poor, the efficiency is low, and planted seedlings are prone to toppling, and meanwhile, in the planting process, seedlings cannot be effectively protected and are prone to being damaged, and the survival rate of the seedlings is affected.

The invention discloses a catalyst for improving the desulfurization performance of calcium hydroxide. The catalyst comprises the following components in percentage by weight: 10-20% of a catalytic component, 15-20% of an excitant, 30-40% of carbide slag and the balance being residues of manganese ores. The catalyst not only can improve the reaction rate of calcium hydroxide with SO2 and SO3, butalso can greatly improve the reaction sulfur capacity of calcium hydroxide and enhance the desulfurization performance of calcium hydroxide.

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 discloses an industrial circulation water quick sterilization technology and an industrial circulation water quick sterilization system. An ultraviolet sterilization device and chemical bactericides are combined; the ultraviolet sterilization device is used as a core device and can be arranged between a circulation pump and a cooling tower and also arranged between the circulation pump and a heat exchange device; the ultraviolet sterilization efficiency is extremely high, the chemical property of water is not changed, the water quality cannot be polluted, and damage to the heat exchange device is avoided, therefore, the industrial circulation water quick sterilization technology and the industrial circulation water quick sterilization system are very environment-friendly. Due to chemical sterilization, trace chemical bactericides are fed, so that the heat exchange device cannot be damaged, and the shortcoming that ultraviolet does not have the continuous sterilization capacity is overcome; the chemical bactericides and the ultraviolet are combined; therefore, the sterilization process is quick, high-efficiency, stable, reliable, safe and environment-friendly.

The invention discloses an acrylic acid hydrogenated abietinol ester modified fluorocarbon resin, the molecular structure of which takes a carbon chain as a main chain structure, and a side group connected with a main chain carbon atom is composed of one or more of a hydrogenated abietinol ester group, a fluoroalkyl ester group, a hydroxyl group or an alkyl hydroxyl group, and/or a hydrogen atom, an alkyl group, an alkoxy group, a carboxyl group and an ester group; from the perspective of the molecular structure, the chemical structure of the fluorocarbon resin is designed and optimized, a large-volume rigid group is introduced into the molecular structure, the novel fluorocarbon resin is synthesized, the hydrophobicity and hardness of the fluorocarbon resin are further improved, the comprehensive performance of the fluorocarbon coating can be essentially improved, and the application of the fluorocarbon coating in the field of marine heavy corrosion prevention is further expanded.

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.

The present invention discloses a phthalide derivative, the structure of said derivative is represented by Formula (I) or Formula (II). The present invention also discloses the preparation method and use of said derivative. The phthalide compound obtained through structure modifications in the present invention enhances the chemical stability and pharmacological activity of the phthalide compound, facilitating the improvement of the druggability of such compounds.

The invention relates to the technical field of touch screen manufacturing, in particular to an FF touch screen manufacturing process which includes the steps: (1) firstly, electroplating or coating an ITO (indium tin oxide) conductive layer on the back of a PET (polyethylene terephthalate) material to serve as an upper conductive material of a touch screen; (2) etching a preset conductive patternand a preset circuit on the ITO conductive layer on the back surface of the PET material through a laser etching machine; (3) carrying out surface treatment on the front surface of the PET material to enable the surface hardness of the PET material to reach more than 3H, and supporting touch writing of human fingers; and (4) finally, enabling the conductive surface of the ITO film on the middle and lower layers of the touch screen to face upwards, and adhering the ITO film in the middle through transparent optical cement OCA, so as to form the FF touch screen with the cover plate effect. According to the touch screen, the upper-layer material can reach the surface hardness of 3H or above, the PET material with the ITO conducting layer attached to the back face can also be taken into consideration, the PET material without the conducting layer in the prior art is replaced, and therefore two attaching procedures and two layers of materials can be reduced, and the cost is reduced.

The invention discloses a target fluorescent dye and application thereof. The target fluorescent dye has a structure of a general formula I. On the basis of the target fluorescent dye, the invention further discloses drug-loading hydroxyapatite subjected to surface modification through the dye and a preparation method of the drug-loading hydroxyapatite. A target compound material prepared through the method can be sensitively recognized, and is combined with glutamine transaminase highly expressed in most tumor cell membranes so as to penetrate through a cell membrane through an endocytosis manner, so that slow targeting release of an anti-cancer drug is realized. The coating rate of the anti-cancer drug can be improved, and normal and tumor cells are effectively distinguished, so that the release efficiency and the local concentration of the anti-cancer drug are effectively improved, and the dosage and the toxic and side effects of the anti-cancer drug are reduced; the compound material can quickly penetrate into tumor tissues, is combined with cell toxin, and has great research value and application prospect in the field of cancer treatment.