46results about How to "Uniform traits" patented technology

The invention relates to a POE (ethylene-octene copolymer) spectrum conversion solar cell packaging rubber film and a preparation method thereof. The POE spectrum conversion solar cell packaging rubber film comprises the following components in parts by weight: 60-80 parts of spectrum conversion particles a, 20-40 parts of spectrum conversion particles b, 0.01-5 parts of organic peroxide, 0.05-0.25 part of ultraviolet stabilizer, 0.05-0.25 part of ultraviolet absorber and 0.01-5 parts of silane coupling agent. The preparation method of the POE spectrum conversion solar cell packaging rubber film comprises the following steps of: 1) adding 70-95 parts of POE and 5-30 parts of spectrum conversion materials into an extruder, extruding and granulating to obtain the spectrum conversion particles a; 2) adding 5-30 parts of POE and 70-95 parts of spectrum conversion materials into the extruder, extruding and granulating to obtain the spectrum conversion particles b; and 3) adding the raw materials into the extruder, extruding in a mixed way, and casting to form a film. The POE spectrum conversion solar cell packaging rubber film provided by the invention has the advantages of good weather resistance and good character uniformity; and the preparation method provided by the invention has the advantages of simplicity in operation and low cost.

The invention relates to a method for building grape high-efficiency regeneration system by a somatic embryo generation way, in particular to a method for generating grape somatic embryo. The method comprises the following steps of: (1) collecting flower buds 5-7 days before blooming, cleaning and disinfecting, and sucking water for later use; (2) taking out single pistil, inoculating to a culture medium and culturing; (3) selecting light yellow or white, granular and compact embryonic callus, inoculating to a culture medium and culturing; (4) carrying out sub-culture on the somatic embryo formed by inducing in the same culture medium; and (5) carrying out sub-culture on the obtained somatic embryo in the culture medium. By adopting the method provided by the invention, grape pistil is cultured in vitro to build the regeneration system; the obtained regenerated plants are uniform and stable in the characters; and the operation steps are simple and are easy to operate in genetic engineering.

The invention relates to an environment-friendly low-cost flame-retardant aid which is added into an organic synthetic material and a preparation method thereof. The synergistic flame retardant comprises the following components in percentage by weight: 10 to 15 percent of nanometer silicon dioxide, 70 to 80 percent of magnesium oxide, 3 to 5 percent of alumina, 1 to 2 percent of silane coupling agent, and 1 to 8 percent of pentaerythritol tetrastearate. The preparation method comprises the following steps of: 1, performing coating treatment on the silane coupling agent and the nanometer silicon dioxide by using organosilicon, wherein the treatment time is 2 to 3 hours; and 2, crushing the nanometer silicon dioxide which is subjected to coating treatment and other components, and mixing to form an uniform mixture. The flame-retardant aid can partially substitute antimony oxide in a halogen and antimony flame-retardant system, can ensure that materials have good flame-retardant properties, and reduces the total cost of material products at the same time; and the preparation method is simple.

The invention relates to a sulfated Grifola frondosa water-insoluble polysaccharide. The preparation method comprises the following steps: using Grifola frondosa polysaccharide as a raw material, swelling with N,N-dimethylformamide, adding sulfur trioxide and trimethylamine salt, and passing through a water bath Reaction, cooling, centrifugation, washing, dialysis in the system. Within a certain concentration and time range of this polysaccharide, S-GFP can significantly improve the proliferation ability and phagocytic activity of RAW264.7 cells in a dose-dependent manner. Activation of RAW264.7 cells shows obvious activation characteristics, and at the same time enhances the metabolism of nucleic acid and glycogen in cells, significantly improves the secretion and activity of acid phosphatase, lysozyme and superoxide dismutase; can induce up-regulation at the mRNA transcription level The expression of iNOS gene in RAW264.7 cells can increase the production of cellular NO, and at the same time promote the secretion of cytokines such as IL-2, IL-12, IFN-γ, IL-6, etc. It has high immune enhancement activity and can be applied to In the preparation of medicines or health products for enhancing immunity.

The invention provides a method for preparing a normal-temperature solid dairy product, comprising: preparing fermented milk; cooling the fermented milk to 2 to 6°C and standing it for 4 to 20 hours to obtain aged fermented milk; whipping the aged fermented milk Aeration, whipping and aeration with an expansion rate of 110% to 200% to obtain aerated fermented milk; forming the aerated fermented milk and freezing it at -80 to -75°C for 1 to 2 hours to obtain frozen fermented milk; and The frozen fermented milk is dried to a moisture content of 2% to 5% to obtain a solid dairy product at room temperature. The present invention also provides a room temperature solid dairy product with a moisture content of 2% to 5%; the protein content of the fermented milk is 4.0% to 5.0%, and the fat content is not higher than 0.45%. The room temperature solid dairy product provided by the invention can produce a unique taste of "melt in the mouth" when it is ready-to-eat, and can be stored at room temperature.

The invention discloses a method for cultivating a high-yield black-skinned chicken strain, and belongs to the technical field of molecular breeding. The invention adopts the molecular-assisted selection method to identify the genotype of the black skin locus, can quickly determine the genotype of the locus, and overcomes the shortcomings of cumbersome cross-testing and long generation intervals in traditional conventional breeding. Adopting the method of the present invention to produce the high-yield black-skinned chicken strain whose genotype is FmFm shortens the generation interval, accelerates the breeding process, and reduces the cultivation cost; moreover, the egg-producing performance of the strain is good, and the nutritional value of eggs is high; The skin properties are uniform, and the carcass is more beautiful. In addition, using this line as a male parent to crossbreed with high-yielding laying hens can produce black-skinned chickens with higher production performance.