9results about How to "Moderate proportion" patented technology

The invention provides a redox imidazole covalent organic framework material as well as a preparation method and application thereof, belongs to the technical field of material preparation and photocatalytic preparation of hydrogen peroxide, and aims to solve the technical problem of low activity of a current covalent organic framework in preparation of hydrogen peroxide. The preparation method of the imidazole-connected redox type imidazole covalent organic framework material comprises the following steps: respectively reacting a reactant 2, 7-di-tert-butylpyrene-4, 5, 9, 10-tetraketone monomer with 4, 4 ', 4', 4 ', 4', 4 ', 4', 4 ', 4', 4 ', 4', 4 ', 4', 4 ', 4', 4 ', 4', 4 ' The preparation method comprises the following steps: mixing 4, 4 '-(pyridine-2, 4, 6-triyl) tribenzaldehyde and a tri (4-formylphenyl) amine monomer, adding a solvent and a catalyst, uniformly stirring, and reacting to obtain the redox type imidazole covalent organic framework material after the reaction is finished. The application comprises the following steps: adding the covalent organic framework, oxygen and the sacrificial agent into water, and reacting under the irradiation of visible light. The preparation method is green, environment-friendly, simple and easy to implement, the prepared material has good thermal stability, and efficient visible light photocatalysis preparation of hydrogen peroxide can be achieved; meanwhile, the catalyst can be recycled and has good photocatalytic stability.

The invention relates to a transcription factor gene specific fragment for delaying softening of postharvest apple fruits and a regulation and control method, and belongs to the technical field of plant genetic engineering. The MdWRKY33 transcription factor gene in an apple plant with poor storability is knocked out or silenced by using a transcription factor gene specific fragment as shown in SEQ ID NO.1 in a nucleotide sequence table, so as to delay the softening of postharvest apple fruits. The specific operation comprises the following steps: cloning a transcription factor gene specific fragment into a virus silencing vector pTRV2 to obtain a recombinant plasmid; respectively transferring the auxiliary vector pTRV1 and the recombinant plasmid into agrobacterium tumefaciens GV3101 strain cells by using a freeze thawing method to respectively obtain strain cells A and strain cells B; respectively carrying out culture medium culture and infection solution suspension treatment, and then preparing a mixed infection buffer solution; and immersing the apple fruits in the mixed infection buffer solution, and carrying out vacuum treatment to obtain the instantly silent apple fruits. Ethylene biosynthesis and cell wall degradation in the apple fruits are inhibited, and softening of the picked apple fruits is delayed.

The invention belongs to the technical field of food processing, and particularly relates to an extraction process of turnip seed oil and an effective component composition of the turnip seed oil. The invention relates to an extraction process of turnip seed oil, which comprises the following steps: performing staged fermentation pretreatment on turnip seed broken cell walls by using a plurality of microbial strains, and then extracting grease by combining with a nano SiO2 (at) SDS composite active agent and ionic liquid synergistic ultrasonic treatment. Through staged fermentation pretreatment and the synergistic effect of the nano material and the ionic liquid, the extraction efficiency and quality of the turnip seed oil are greatly improved; firstly, cell walls and internal components are gradually degraded by utilizing aspergillus niger, aspergillus oryzae, bacillus licheniformis, lactic acid bacteria and saccharomycetes, grease is released, and the stability of the grease is improved; then, the extraction process is further optimized by a composite active agent formed by nano silicon dioxide and lauryl sodium sulfate and 1-butyl-3-methylimidazolium acetate, and the efficiency is enhanced through ultrasonic treatment;

This utility model discloses an adjustable steam supply device, including an inlet pipe, a temperature sensor fixedly installed above the inlet pipe, a four-way pipe fixedly installed on one side of the inlet pipe, an electric valve fixedly installed on one side of the four-way pipe, a direct current pipe fixedly installed on one side of the electric valve, a regulating proportional valve fixedly installed on one side of the direct current pipe, a supply pipe fixedly installed on one side of the regulating proportional valve, a pressure sensor fixedly installed above the supply pipe, a steam-water separation mechanism at the rear end of the four-way pipe, and a water replenishment mechanism at the front end of the four-way pipe. This device achieves steam regulation capability, increases practicality, and solves the problems of traditional steam supply pipelines, which mostly directly distribute and use steam upon entering the plant without steam moisture treatment or superheating treatment, resulting in unstable steam quality, accelerated equipment corrosion, and impact on production processes and product quality.

The invention belongs to a detection method of a traditional Chinese medicine preparation, and relates to a one-plate multi-detection thin-layer chromatography identification method of pulse-activating decoction. The thin-layer chromatography identification method comprises the following steps: (1) preparing a test solution; (2) preparing a reference substance solution; (4) thin-layer chromatography identification: sucking the test sample solution, the reference substance solution and the reference medicinal material solution, respectively dripping on the same reversed-phase thin-layer plate, developing by taking acetonitrile-methanol-water with the volume ratio of 3: 3: 2 as a developing solvent, taking out, airing, spraying a sulfuric acid ethanol solution, heating and inspecting. The method adopts one thin-layer plate to simultaneously identify the whole-formula three medicines in the pulse-activating decoction, has the advantages of simplicity, rapidness, high efficiency and the like, and meanwhile, has clear chromatographic spots and good specificity and reproducibility. Compared with the prior art, the pretreatment method is simple, and used reagents are low in toxicity; meanwhile, the technology for controlling the quality of the ginsenoside Rg3 in the pulse-activating decoction through thin-layer identification does not exist in the prior art is made up.

The application relates to the technical field of tobacco flavor, and discloses a method for improving the sensory quality of caramelly sweet tobacco leaves, which uses tobacco leaves with relatively poor quality in the caramelly sweet tobacco leaf producing area as raw materials, develops tobacco extracts through biotechnology and multi-stage separation technology, and respectively prepares functional intensive flavor L and style intensive flavor X through flavor adjusting means, so that the aroma and taste of the caramelly sweet tobacco leaves can be enhanced, the attractiveness and comfort degree can be improved, and through grading separation and accurate proportioning, the proportion of different components in the tobacco extracts can be more suitable, so that the taste of the tobacco can be improved, the tobacco is more rich and balanced, the preparation method and the accurate proportioning can produce unique tobacco taste and aroma, the product can help to establish a differentiated competitive advantage in the market, in addition, through improving the sensory quality and taste of the tobacco leaves, the satisfaction of smokers can be improved, and the recognition and loyalty of the product can be improved.

The invention discloses a transcription factor gene for promoting adventitious root generation of apple dwarf rootstock and a regulation and control method, and belongs to the technical field of plant genetic engineering. The method comprises the following specific regulation and control operations: cloning a transcription factor gene shown as SEQ ID No.1 in a nucleotide sequence table to an overexpression vector in an apple dwarfing rootstock with difficulty in adventitious root generation; transferring agrobacterium tumefaciens EHA105 by using a freeze thawing method to obtain strain cells, and culturing in a culture medium; centrifugally collecting thalli, and suspending with an infection solution to obtain an infection buffer solution; immersing the apple dwarf rootstock tissue culture seedlings in the infection buffer solution, and carrying out vacuum treatment; and culturing in a cuttage culture medium, and obtaining transplanted seedlings when the length of adventitious roots is greater than 10mm and the rooting number is greater than 3 and reaches the transplanting standard. The instant infection and sugar-free culture technology provided by the invention can quickly promote the occurrence of the dwarf rootstock adventitious roots without a tissue culture technology, and has important economic and social benefits for improving the occurrence of the apple dwarf rootstock adventitious roots.

The utility model relates to the technical field of sodium hypochlorite reaction, and discloses an efficient salting machine device of a sodium hypochlorite generator, which comprises a tank body and a connecting pipe, the top of the tank body is fixedly connected with a motor, the driving end of the motor is fixedly connected with a rotating rod, and the outside of the rotating rod is fixedly connected with a plurality of connecting rods. The other end of the connecting rod is fixedly connected with a fixing block, the other end of the fixing block is fixedly connected with a second spring, and the other end of the second spring is fixedly connected with a scraping plate. According to the device, the motor is started, the rotating rod can drive the follow-up rod at the bottom to rotate, the follow-up rod slides on the inner wall of the tank body, salt precipitation can be reduced, salt dissolution can be promoted, the other end of the connecting rod is connected with the fixing block, the fixing block is connected with the scraping plate through the second spring, and the second spring can apply pressure to the scraping plate; and the scraping plate is tightly attached to the inner wall of the tank body and slides, so that salt scales attached to the inner wall of the tank body are effectively cleaned.

The invention belongs to the field of target material preparation, and particularly discloses a tantalum target material and a preparation method and application thereof. According to the method, stress annealing, cold forging and pressing, heat treatment, two-stage rolling in different directions, intermediate static pressure treatment and recrystallization annealing are sequentially carried out on the tantalum ingot, all the steps are matched with one another, so that grain distribution of the tantalum target is more uniform, grains are finer, the {111} grain orientation proportion is higher, the sputtering speed and sputtering stability are controlled, and the sputtering quality is improved. The uniformity of sputter coating is improved, and the purpose of improving the film forming quality is achieved.