11 results about "Biological materials" patented technology

A method for detecting human papillomaviruses (HPV) in biological material is described, in which method nucleic acids are extracted/isolated from biological material and HPV-specific DNA is detected in the isolated nucleic acids. This method uses at least one of the nucleotide sequences SEQ ID No. 1 or SEQ ID No. 2 from the enclosed sequence listing or sequences which bind to sequences to which one of the sequences SEQ ID No. 1 or SEQ ID No. 2 binds or sequences which are complementary to the abovementioned sequences.

The present invention relates to an engineered biological material comprising or enriched for tissue of intervertebral disc; tissue derived from an engineered biological material; constructs comprising one or more tissues from an engineered biological material; methods for producing the engineered biological materials and constructs; and methods of using the engineered biological materials and constructs.

The present invention provides bead-like hollow particles and an easy and convenient method for producing the same, and a friction material using the bead-like hollow particles.

The particles are bead-like hollow particles comprising odd-shaped particles composed of a metal oxide as a main component and having at least one of a through hole and non-through hole in a surface; the method is a producing method for the bead-like hollow particles, which comprises spraying and drying a suspension of a particulate biological material and a particulate metal oxide by a two-fluid nozzle spray dryer to obtain a powder composed of the particulate biological material as a core and a layer of the particulate metal oxide as a shell, and heating the obtained powder; and the friction material is a friction material using the hollow particles.

The invention relates to a biomass fuel processing method, which c comprises: crushing wheat straw, corn straw, corn cob, bean straw, rice straw, reed stems, wood chips, wood blocks, branches, leaves, husks, fruit residue, bagasse, sunflower straw, hay, bran, wheat bran or waste paper into scraps, adding 14-18 parts by weight of water, 2-5 parts by weight of a binder, and 80-85 parts by weight of the crushed biological material to a container, stirring, heating to a temperature of 120-160 DEG C, compressing the material to achieve 1/20-1/30 of the original stacking volume, preparing the material into the block-like material or granular material, and carrying out air-drying or drying on the block-like material or granular material. A purpose of the present invention is to provide the processing method of the biomass fuel with characteristics of rich source, low raw material cost, high combustion value, long combustion time, small storage occupation space, no rotting, and low transporting cost, and the product thereof.

The invention discloses the technical field of disease and pest control, and particularly discloses a novel biological material for plant disease and pest control. The novel biological material for plant disease and pest control comprises 10-12 parts of methyl formate, 40-42 parts of methyl carbamate, 2 parts of a preservative, 12-14 parts of mother powder, 1-1.2 parts of a defoaming agent, 3-3.2parts of an antifreezing agent and the balance of a solvent, wherein the preservative is a mixed material of potassium sorbate, sodium diacetate and dehydroacetic acid, and the mass ratio of the potassium sorbate, the sodium diacetate and the dehydroacetic acid is 1:1:1.2; the mother powder is diethylaminoethanol acetate; the defoaming agent comprises emulsified silicone oil, a high-alcohol fattyacid ester complex and polyoxyethylene polyoxypropylene pentaerythritol ether, and the mass proportions of the emulsified silicone oil, the high-alcohol fatty acid ester complex and the polyoxyethylene polyoxypropylene pentaerythritol ether are equal. Through addition of the methyl formate, the fragrance of the novel biological material for the plant disease and pest control is enhanced to improvethe attention of pests, so that the pests take the initiative to eat the novel biological material for the plant disease and pest control, and thus the novel biological material for the plant diseaseand pest control has a relatively good long-lasting pesticide effect.

The invention relates to the technical field of bio-fertilizers, and discloses a high-density rapid composting assembly for bio-fertilizer fermentation processing, the high-density rapid composting assembly comprises a composting mechanism, the top of the composting mechanism is rotatably connected with a rotating mechanism, the bottom of the rotating mechanism is movably connected with a rotating shaft, and the bottom of the rotating shaft is movably connected with a threaded column, and the outer side of the threaded column is movably connected with a driven piece. According to the high-density rapid composting assembly for bio-fertilizer fermentation processing, through rotation of the rotating shaft, the threaded column drives the driven piece to move, so that an extrusion piston drives a warping plate to move, the warping plate extrudes a pressing piston, and the pressing piston extrudes a nutrient solution in a piston bin into an inclined pipe and a duct, therefore, the nutrient solution is uniformly sprayed on the biological material in the stirring bin through the transfer of a conducting plate, a transverse pipe and a spray head, so that microorganisms on the surface of the biological material are fully cultured, and the biological material is quickly composted.

The invention relates to the technical field of biological medicines, and particularly discloses application of an avian chemotactic factor CCL19 in preparation of an antiviral product. Tests show that after cells are transfected by the CCL19 eukaryotic expression plasmid, replication of poultry viruses can be effectively inhibited, and then the application of the poultry-derived chemotactic factor CCL19 or the coding gene of the poultry-derived chemotactic factor CCL19 or a biological material containing the coding gene of the poultry-derived chemotactic factor CCL19 in preparation of antiviral products is provided. The invention provides a new way for prevention and control of poultry virus diseases.

The invention provides a method for culturing a cell sphere by utilizing self-assembled polypeptide derivative hydrogel, the cell sphere and application of the cell sphere, and belongs to the technical field of biological materials. The culture process of the cell sphere comprises co-culture with the self-assembled polypeptide derivative hydrogel, and the structure of the self-assembled polypeptide derivative in the self-assembled polypeptide derivative hydrogel is Biotin-DPhe-X. The cell sphere provided by the invention overcomes the problems of complex cell sphere preparation process and low cell activity in the prior art, the cell sphere can be effectively obtained through co-culture of the self-assembled polypeptide derivative hydrogel and the cell suspension, the activity of the cell sphere is ensured, and when the used cells are stem cells, the cell dryness can be retained. The cell sphere can also be used for preparing organoids and tumors, and the tumors obtained through the cell sphere are similar to solid tumors in feature and can be used for drug screening.

The invention discloses a glucose derivative lactone-cyclic lactone copolymer. The copolymer is formed by polymerizing glucose derivative lactone and cyclic lactone, wherein a molar ratio of the glucose derivative lactone to the cyclic lactone is 0:100 to 100:0; and the usage amount of the cyclic lactone is not 0. The invention further discloses a preparation method of the glucose derivative lactone-cyclic lactone copolymer. The glucose derivative lactone-cyclic lactone copolymer disclosed by the invention has excellent non-toxicity and non-irritating property and has good biocompatibility and biodegradability, and can be completely decomposed into gluconic acid and 6-hydroxycaproic acid by steapsin, and the substances can be completely decomposed into water and carbon dioxide by cells. The glucose derivative lactone-cyclic lactone copolymer has potential biological material and environment material prospects.

The invention provides a heteroatom-doped porous carbon material with a high specific surface area, and a preparation method thereof. The preparation steps are as follows: (1) mixing a copper nanoparticle template with a surfactant and a reaction initiator in water to obtain a precursor mixed solution, then adding a polymer monomer are to carry out a polymerization reaction, and separating a polymer coated with the copper nanoparticle template by centrifugation; (2) performing thermal cracking on the polymer; and (3) treating the carbonized product with an acidic solution to dissolve the copper nanoparticle template, performing centrifugal separation to obtain a precipitate, namely the product, and retaining a supernatant to prepare a new copper nanoparticle template. The heteroatom dopingamount, morphology, particle size, and pore volume of the material provided by the invention are easy to control, and the application in different fields such as new energy materials, electrochemicalmaterials, and biological materials is convenient. In addition, the technical route realizes recycling of the metal nano template, the cost during large-scale production can be significantly reduced,and thereby the technical route has practical application significance.

The invention relates to a microneedle for treating leucoderma as well as a preparation method and application thereof, and relates to the field of medical biological materials. The microneedle comprises hydrogel, a water-soluble substrate material and an active pharmaceutical ingredient, the active pharmaceutical ingredient is selected from at least one of the following raw materials: melanotropin, tofacitinib, tacrolimus, pimerolimus or ruxolitinib. According to the microneedle, hydrogel with high mechanical strength is adopted, the microneedle can pierce the cuticle, the hydrogel is insoluble in water, the prepared microneedle does not need a large amount of organic solvent, after the microneedle pierces the cuticle, the medicine for treating leucoderma is directly delivered to the epidermal layer and the corium layer through the diffusion effect, and the medicine application effect is enhanced; meanwhile, the substrate of the microneedle is made of a water-soluble substrate material, after the skin is punctured by the microneedle, water is absorbed, the tip of the microneedle and the substrate of the microneedle are automatically separated, and the tip which is insoluble in water is remained in the skin, so that active pharmaceutical ingredients attached to the microneedle are released in a long-acting manner, and the administration frequency is reduced.