142 results about "Fibers tissue" patented technology

Novel plant promoters isolated from cotton fiber tissues are provided. The plant promoters are located upstream cotton plant genes KC03, KC18, KC22, and Gh3, all of which are expressed in cotton fibers, and contain (a) DNA having the nucleotide sequence of SEQ ID NO:1, 6, 11, or 16. Also provided are plant expression vectors prepared by introducing the plant promoters into appropriate vectors; transformed plant cells prepared by introducing the plant expression vectors into host plant cells; transformed plants regenerated from the transformed plant cells; transformed plant seeds obtained from the transformed plants; and processes for producing transformed plants from the plant seeds.

The invention relates to a tissue engineering material and a preparation method thereof, in particular to a nano fiber tissue engineering blood vessel and a preparation method thereof. The invention consists of a three-dimensional reticular non-woven film formed by an inner layer of nano fiber and an outer layer of nano fiber; the inner layer of the blood vessel is natural polymer, wherein, calculated by weight, 40 percent to 80 percent is fibroin, 20 percent to 50 percent is gelatine, 0 percent to 20 percent is extracellular matrix protein; while the outer layer of the blood vessel is synthetic polymer. The preparation method is that the natural polymer is dissolved in trifluroroethyl and other solution, while the synthetic polymer is dissolved in hexafluoroisopropanol and other solution, which are respectively prepared into spinning solution; the static electricity spinning technique is adopted to subsequently form the inner and the outer layers on a gather roller; cross-linked treatment is conducted after the inner and the outer layers are taken down, to prepare the nano fiber tissue engineering vessel. The inner layer can simulate the structure of the extracellular matrix, provide good environment for endothelial cells to grow, support adhesion, proliferation and differentiation of the cells, and is good for endothelization of the blood vessel; and the outer layer has good mechanical performance.

The invention discloses a high-strength and high-conductivity CuAg alloy material with a continuous fiber tissue and a preparation method thereof. The material consists of Cu, Ag, etc. Cu and Ag alloyingot with a columnar structure is obtained by a directional solidification technology, and continuous fibrous tissue structure is obtained by the technologies of extruding, drawing, etc. The components of the alloy material are as follows: 5-10wt% of Ag and balance of Cu. The preparation method of the CuAg alloy comprises the following steps: (1) preparing chemical composition; (2) vacuumizing asmelting room and a directional solidification room; (3) smelting the alloy; (4) directionally solidifying; (5) hot extruding; (6) hot processing; and (7) drawing wire or rolling. The material is applicable to slide contact material such as a middle-load and low-load switch, a breaker, a contactor, a micromotor slip ring, a commutating sheet, and the like, high-pulse magnetic field conductor material, an integrated circuit lead wire frame, a fish torpedo lead wire, an electric conduction reed, etc.

The invention relates to the technical field of medicinal material processing equipment and in particular relates to a medicinal material cutting machine. The medicinal material cutting machine comprises a medicinal material conveying mechanism arranged on a rack and a cutting tool arranged at a discharging end of the medicinal material conveying mechanism, wherein the cutting tool comprises a blade, the blade is connected with a tool rest, a driving mechanism drives the tool rest to drive the blade to implement cutting motion in the same vertical plane, the cutting motion is compound motion of cutting up, down, left and right, and a material supporting unit which cooperates with the blade for implementing cutting is arranged below the blade. When medicinal materials are conveyed along the conveying mechanism, the driving mechanism drives the tool rest to drive the blade to complete the compound motion of cutting up, down, left and right, the medicinal materials are primarily cut off when the blade moves up and down, fiber tissues of the medicinal materials arranged on the material supporting unit are not completely broken, and internal filaments of fibers of the medicinal materials are completely cut off when the blade moves left and right.

The invention relates to the technical field of biological materials, in particular to a micro-nanofiber tissue engineering scaffold and a preparation method thereof. The micro-nanofiber tissue engineering scaffold comprises microfibers, bacterial cellulose nanofibers, micropores and bacterial cellulose micropores, wherein the microfibers are 5-500 microns in diameter, the bacterial cellulose nanofibers are 10-100 nm in diameter, the micropores are 200-500 microns in diameter, and the bacterial cellulose micropores are 10-100 nm in diameter. Compared with the prior art, the micro-nanofiber tissue engineering scaffold is high in bionic degree, stable in structure and proper in porosity and aperture, and can provide a proper external environment for cells; the preparation method is simple and easy to implement, low in cost, wide in raw material source, environment-friendly and pollution-free.

The present invention relates to a pharmaceutical composition and a method for regenerating normal tissue from fibrotic tissue, the pharmaceutical composition and the method employing a collagen-reducing substance. In accordance with the present invention, normal tissue can be therapeutically regenerated from fibrotic tissue.

The invention relates to the technical field of medical high polymer materials and discloses a medical polycaprolactone membrane as well as a preparation method and an application of the medical polycaprolactone membrane. The constituents of the membrane include polycaprolactone; the membrane is 0.5-2mm thick; and the membrane is of a planar mesh structure and the mesh aperture of the planar mesh structure is 100-300 microns. Besides, composite additive materials, such as BETA-tricalcium phosphate, hydroxylapatite and coral, also can be added to the membrane. The invention also provides a method for preparing the medical polycaprolactone membrane by use of the 3D printing technology; the membrane is applicable to the field of bone tissue engineering; and the medical polycaprolactone membrane is used for covering a bone defect part and then repairing the bone defect, and therefore, the effects of surrounding and protecting the bone defect part, reducing stem cell loss, preventing surrounding fiber tissue ingrowth and guiding bone regeneration can be achieved.

The invention discloses an electrostatic spinning collection device and electrostatic spinning equipment with the device. The device comprises a directional fiber collector and a rotatable planar fiber receiver, wherein the directional fiber collector comprises a rotating shaft, two parallel disks mounted on the rotating shaft and a driving unit coupled with the rotating shaft; negative voltage is applied to the disks; fibers formed by splitting charged jet flow released from a positive voltage end are suspended between the two parallel disks in a directional manner; the rotatable planar fiber receiver comprises a receiving disk, and a rotation driving mechanism and a reciprocating driving mechanism which are coupled to the receiving disk; the reciprocating driving mechanism is used for supporting the receiving disk to get into or get out of a space between the two parallel disks; the rotary driving mechanism is used for rotating the receiving disk so as to adjust an angle of the fibers collected to the disk surface of the receiving disk. The invention also discloses an electrostatic spinning collection method using the electrostatic spinning collection device. The fibers electrically spun by the electrostatic spinning collection device are high in directing degree and are suitable for constructing highly ordered fiber tissue structures.

The invention discloses a preparation method of an aliphatic polyester-chitosan composite fibroustissue restoration material, comprising the steps as follows: a. mixture solution of aliphatic polyester and chitosan is prepared; and b. electrostatic spinning is carried out on the mixture solution of aliphatic polyester and chitosan. Compared with the prior art, the preparation method has simple operation and low price, the aliphatic polyester and the chitosan in composite fiber are mixed molecularly, thus avoiding phase separation between the aliphatic polyester and chitosan; the bracket consisting of aliphatic polyester-chitosan composite micro-nano fiber has good fineness degree, good cell adhesion, good mechanic performance, higher porosity and large specific surface area, can be degraded in vivo simultaneously, and is an ideal tissue restoration bracket which has extremely high porosity and similar nano-structure of the extracellular matrix of the natural cell, can promote migration and proliferation of cells, and can be used for the restoration of tissues such as cornea, skin, cartilage and the like.

The invention provides a method for preparing a composite nanofiber tissue engineering scaffold based on graphene oxide. The method includes the following steps: a step 1, dissolving silk fibroin and high-molecular polymer in a solvent with stirring till complete dissolution of the silk fibroin and the high-molecular polymer so as to acquiring a spinning solution; a step 2, performing electrostatic spinning on the spinning solution obtained from the step 1 so as to acquire a nanofiber membrane, performing steam fumigation treatment by using ethyl alcohol, and performing drying so as to acquire a silk fibroin/ high-molecular polymer composite nanofiber scaffold material; and a step 3, dipping the silk fibroin/ high-molecular polymer composite nanofiber scaffold material obtained from the step 2 in a graphene oxide dispersion liquid, taking out the silk fibroin/ high-molecular polymer composite nanofiber scaffold material, and drying the silk fibroin/ high-molecular polymer composite nanofiber scaffold material so as to acquire the composite nanofiber tissue engineering scaffold. The composite nanofiber tissue engineering scaffold is high in mechanical property, can provide biological signals for tissue growth, can promote adherence, propagation and differentiation of cells.

The invention discloses a cosmetic method for repairing skin wrinkle and pitting defect, which includes that dermis trace intervention surgery is adopted to deliver composite preparation which contains biological active components and consists of recombinant human Platelet-Derived Growth Factor (rhPDGF) with dermis repairing function, Transforming Growth Factor (TGF) and Hyaluronic Acid (HA) into dermis for stimulating the growth and mitosis of fibroblast, the synthesis and secretion of collagen and HA, the generation and repairing of original fiber and flexibility fiber so that the skin defects of skin pitting, deep wrinkle and dermis fiber tissue fracture are repaired for a long term, and the skin beautifying and anti-aging effect are realized.

The invention discloses a far-infrared fiber. The base material of the fiber contains far-infrared ultrafine powder, wherein the far-infrared ultrafine powder comprises the following components, by weight, 3-5 parts of an alga carbon fiber, 30-45 parts of silica, 20-28 parts of zirconium dioxide, 5-10 parts of alumina and 2-10 parts of zinc oxide; the weight ratio of the fiber base material to the far-infrared ultrafine powder is 100:3-15; and the largest particle size of the far-infrared ultrafine powder is not more than 0.5mum. The manufacturing method which enables the alga carbon fiber to be added into the far-infrared ultrafine powder through a master batch process has the advantages of substantial far-infrared effect, simple processing route, easy operation, low cost, and easy industrialized production. The far-infrared fiber can be firmly combined with fiber tissues, and has the advantages of strong durability, non-toxicity and safety.

The invention discloses a three-dimensional nano-fiber tissue engineering scaffold. The three-dimensional nano-fiber tissue engineering scaffold comprises a silk fibroin-chitosan-nucleic acid nano-fiber support which is formed by crosslinking silk fibroin-chitosan-nucleic acid nano-fiber filaments prepared from a spinning solution containing chitosan-nucleic acid nano micro-capsules and silk fibroin through a spinning process. The three-dimensional nano-fiber tissue engineering scaffold can provide a good growth micro-environment similar to an extracellular matrix and an enough mechanics support for cells and can be slowly and naturally degraded to release the chitosan-nucleic acid nano micro-capsules carrying nucleic acid, the chitosan-nucleic acid nano micro-capsules can guide carried nucleic acid into the cells, and the local targeting and time-controllable gene therapy effect is exerted. The invention further discloses a preparation method of the three-dimensional nano-fiber tissue engineering scaffold.

The invention discloses an energy-saving rapid solid-liquid separation device. The solid-liquid separation device comprises a motor, a reduction gearbox, a guide rail cylinder, a spiral track assembly, a driven gear, a screw rod extruding plate, an electromagnet, an electromagnet spring, a solid matter pressing plate, a solid matter cavity part, a solid-liquid separation cavity part, a solid matter collection box and a liquid collecting box. According to the solid-liquid separation device, circumferential rotating force is converted into axial thrust only by utilizing a thread meshing principle of a screw and a nut, and rapid separation of a solid-liquid mixture is carried out; the separation process of the solid-liquid separation device is distinguished from a stirring and crushing type separation process, the problems and defects that in the separation process of an existing technology of solid-liquid separation, physical and chemical properties of the solid-liquid mixture are damaged, separation efficiency is low and manufacturing cost is high are overcome, original solid fiber tissue in the solid-liquid mixture can be kept, the physical property is good, and the solid-liquid separation device is suitable for various occasions and can be used for making products with different sizes and specifications to achieve various functional purposes.

The invention provides a soil fixing ecological repairing agent and a preparation method thereof. The soil fixing ecological repairing agent is prepared by treating crop wastes rich in plant fiber tissues by a program of crushing, refining, wetting, fermenting and drying, then adding a certain propart of fine sand, aluminum sulfate, sodium silicate, expanded perlite and active sludge, and screening. The soil fixing ecological repairing agent, on one hand, enhance drag force and cementation effect among soil blocks and granules to achieve the technical effect of fixing and repairing soil and preventing soil and water loss and transportation, on the other hand, the soil fixing ecological repairing agent adopts effective technical means to avoid the side effects of soil hardening and compaction caused by the soil fixing ecological repairing agent. The soil fixing ecological repairing agent has the advantages of greenness, environmental friendliness, wide source of raw materials, low cost, simple preparation process, convenient use and no side effect.

The present invention aims at providing cutting-free cold extrusion process of forming worm, and the plasticity of metal material is utilized in forming worm. The blank is rolled in a thread roller to form corresponding worm thread through plastic deformation. The cutting-free cold extrusion process produces no cutting scraps and no breaking of the fiber tissue in metal, and has material saving, high worm strength, simple process, high production efficiency and low cost.

The invention discloses a Chinese herbal feed modifier for improving meat quality of livestock and poultry and quality of fresh eggs. The Chinese herbal feed modifier is prepared from bamboo fungus, cordyceps militaris, tuckahoe, flammulina velutipes, pelvetia silquosa, Chinese yam and codonopsis pilosula. The feed modifier contains nutritional ingredients such as protein, a plurality of vitamins and microelements, and a bioactivator, has the functions of adjusting the physiology of livestock and poultry bodies, and resisting bacteria and viruses, and not only is beneficial to growth and breeding of the livestock and poultry, but also can be used for improving the quality of livestock and poultry products greatly, enhancing the immunity of the livestock and poultry effectively and improving the disease resistance and the ability of preventing various diseases. The feed modifier disclosed by the invention is safe and innoxious, free of drug resistance, free of residue and free of toxic and side effects. By virtue of the feed modifier, harmful substances in an animal body can be discharged, the meat quality of the livestock and poultry products and the quality of the fresh eggs are improved, the fiber compactness of muscle is enhanced, the fiber tissue and grain of stiff muscle are softened and degraded, and peculiar smell, such as fishy smell, greasy smell, urine odor and smell of mutton, in the meat are removed, so that the meat is fresh, tender, smooth, tough, chewy, palatable, natural and fragrant. The fresh eggs are natural and bright in color, and have natural fragrance.

The invention relates to a processing technology of distiller's grain feed. The processing technology comprises the steps that ethanol dehydrogenase is added into distiller's grains, after enzymolysis is performed for 2-3 hours, acetaldehyde dehydrogenase is added for enzymolysis, enzymolysis materials are dried until the water content is lower than 10%, and a dried mixed material is obtained; the dried mixed material is put into a bulking machine to be bulked, a bulked mixed material is obtained, the bulked mixed material is smashed to be 40-50 mesh, and then the distiller's grain feed is obtained. According to the processing technology, after the distiller's grains are treated through ethanol dehydrogenase and acetaldehyde dehydrogenase, the protein content in the distiller's grains can be significantly increased, cellulose pectin substances in the distiller's grains can be effectively degraded into monosaccharide and oligosaccharide, multiple organic acids and vitamins are generated, and the nutritional value and aroma of the distiller's grains are improved; the rice hull fiber tissue treated through a bulking technology is in a fluffy state and is easy to digest and absorb, the dissolution rate of the nutrients in rice hulls can be increased, and the bulked distiller's grains are good in solubility and palatability and can be easily digested by livestock.

The invention discloses a method for lowering fermentation inhibitor from a source. In the method, a steam explosion technology and an airflow classification technology are combined to be applied to the pretreatment of wood fiber raw material; selective pretreatment is carried out by a second-section steam explosion combing technology according to the characteristic of each tissue of the fiber raw material effectively, so that the fiber tissue can achieve a good pretreatment effect and the thin-wall tissue can be prevented from excessively degrading; therefore, while the enzymolysis rate of the fiber raw material is improved, the side reaction can be effectively prevented, i.e. the inhibitor content is lowered, an detoxication unit operation introduction is omitted, and the technology is simplified. In addition, in the technology, the separating and the selective treatment of the fiber cell and the thin-wall cell provide a new path for the layered multistage conversion and biomass power utilization of the wood fiber raw material. The second-section steam explosion combing technology is favorable for rehydration uniformity of the fiber raw material, the steam explosion condition of the second section of material is lowered, the raw material content is reduced, and the use ratio of the raw material is improved.

The invention provides a simple identification method of pig, cattle and sheep split leather. The simple identification method includes following steps: S1, cutting an opening at any position of the split leather, clamping two ends of the opening on upper and lower clamps of a tensile machine respectively, starting the tensile machine, and tearing the split leather along the opening, wherein tearing length is higher than 100mm; S2, cutting to obtain a split fiber tissue sample strip, wherein a fiber bundle contained by the sample strip is uniform in length distribution and has representativeness; S3, putting the sample strip under a microscope, observing, and taking a microscopic picture, measuring length and thickness of the fiber bundle through microscope workstation software, and recording morphological characteristics of the fiber bundle; S4, comparing the taken microscopic picture, the measured length and thickness of the fiber bundle and the recorded morphological characteristics with pre-stored known sample spectra, and identifying whether a leather sample is made of pigs, cattle and sheep. By the method, identification of the pig, cattle and sheep split leather is simpler and more effective, and identification difficulty caused by the fact that cross section characteristics are not obvious is reduced.

The invention relates to a process for processing a sauced chicken product. The process at least comprises the steps of: injecting and pickling a chicken body and cooking the chicken body, wherein the injection liquid used in the injecting and pickling link comprises the following components: compound phosphate, soybean protein, carrageenan and water; in the step of cooking the chicken body, the chicken body subjected to injecting and pickling is cooked by employing spice, and the spice is used after being ground. The chicken body is subjected to injecting and pickling, so that the injection liquid can rapidly enter various parts of the chicken body, the water-retaining property of the chicken can be greatly improved through damage on the muscle fiber tissues caused by the components in the liquid, the mouthfeel tenderness is improved, and the spice is ground before cooking, so that the contact area between the spice and the soup is obviously increased, the penetration of the flavor components is facilitated under the condition that the muscle tissues are soft, and the taste of the spice in the product is improved; and therefore, the prepared sauced chicken product is smooth in mouthfeel and fresh in meat. By adoption of the method, the problem that the product is not tasty can be solved in a short time, and the production efficiency is improved.