2413 results about "Grafting method" patented technology

Methods and devices are provided for applying retrograde perfusion of blood at various locations within the body. In certain exemplary embodiments, the methods and devices are particularly useful during open or translumenal surgical approaches to apply long-term retrograde perfusion of the myocardium, the neurosystem, or a periphery, such as the arm or leg, thereby treating various medical conditions, such as coronary artery disease, stroke, renal failure, etc.

The invention discloses a blumea oil microcapsule textile composite finishing agent and use thereof. Gelatin or acacia of natural polymers is used the main ingredient of a wall material, the blumea oil serving as a Chinese medicinal material is used as a core material, and complex coacervation is adopted to prepare an blumea oil microcapsule aqueous emulsion; a shrink-resistance crosslinker and a catalyst are added to be combined with the blumea oil microcapsule aqueous emulsion into a multifunctional blumea oil microcapsule textile composite finishing agent; researches on the use of blumea oil microcapsules in textile finishing are carried out; and a novel cross linked graft method is used to perform the microcapsule finishing of textiles to form chemical bonds between the microcapsules and the textiles though the shrink-resistance crosslinker and free formaldehyde molecules in 2D resin further participate in a cross-linking and curing reaction as a microcapsule curing agent, so the textiles achieve a long lasting antibacterial and health-care function, a shrink-resistance function and low formaldehyde release content performance.

A primary and branch graft deployment delivery system (70) comprises a primary graft (72) having a branch port opening or member (75), a retractable primary sheath containing the primary graft, an outer tube (60) within the retractable primary sheath and within the primary graft, an inner tube (61) within the outer tube, a cap (54 or 71) coupled to the inner tube and configured to retain at least a portion of a proximal area (73) of the primary graft in a radially compressed configuration. The system further comprises a branch graft (89) advanceable through the branch graft port member and further comprising a snap connector member (90) associated with the branch graft, the snap connector member being configured to frictionally engage the port member, the engagement of the snap connector to the port member forms a connection between the proximal end of the branch graft and the primary graft.

A Cobalt catalyst for the Fischer-Tropsch synthesis of Hydrophobic and organic modification comprises an active component, a promoter, a carrier and a grafted hydrophobic radical, wherein the weight percentages of the components are that metal cobalt takes 3-35%, porous silica gel takes 53-96%, noble metal takes 0.01-2%, and the hydrophobic radical takes 0.05-10%. The cobalt nitrate and noble metal nitrate or chloride water solution is applied to impregnate the porous silica gel to produce porous silica gel supported cobalt sample; then the hydrophobic radical on the organosilane are grafted onto the sample surface by applying a back grafting method. The invention can synthesize middle distillate oil (C5-C11 alkane) by the synthesis gas through a high selective step, shorten process flow and reduce production cost.

Methods for treating an annulus fibrosis having a defect include inserting a flexible device into the defect. The flexible device is advanced distally beyond an outer layer of the annulus fibrosus. The flexible device is then expanded such that a width of the flexible device is larger than the defect, where the flexible device prevents escape of nucleus pulposus through the defect. The flexible device may have at least two appendages made from a shape-memory metal. Alternatively, the flexible device may have a U-shaped structure that includes a central portion and two legs. The flexible device may also be anchored to the annulus fibrosis and/or the vertebrae.

The invention discloses a grafting method of camellia bud stocks, comprising the steps of: taking camellia bud seedlings which are not lignified or half-lignified as parental stocks, wherein, the camellia bud seedlings have 3-5cm height and more than 0.2cm diameter; taking the annual shoot camellia mother trees which are lignified or half-lignified as cions; grafting the stocks and the cions; packing grafting openings with preservative films when grafting; and sticking the preservative films with fire head irons. The invention adopts a preservative film-ironing technology, does not hurt the stocks, can completely seal the grafting openings when packaging, has good moisture retentiveness, has the hardly oxidized grafting openings which are fast healed, and has grafting survival rate which is high to 94.5%. Furthermore, the invention has simple and fast operation, can complete the grafting process by sticking the preservative films by means of light ironing with pastille fire head after being packaged, simplifies the complex grafting process of the camellia bud stocks, and is easy to learn, understand and operate. Therefore, farmers can fast skillfully master applied practical technique.

Methods and apparatus for delivering and installing a new length of tubing between two sections of a patient's existing body organ tubing and at least partly outside of that existing structure. For example, the new length of tubing may be for the purpose of providing the patient with a coronary bypass. The new tubing may be an artificial graft, a natural graft (harvested elsewhere from the patient), or both. The new tubing is installed at the operative site primarily by providing at least one graft location with instrumentation inserted through the patient's existing tubular body organ structure. Assistance in installing the new tubing may be provided by minimally invasive surgical access openings in the patient's chest. The tubing may be delivered through the patient's existing tubular body structure or, alternatively, through the surgical access openings.

The invention belongs to the technical field of optimization of grafted varieties and particularly relates to a novel grafting method which comprises the following steps of: 1) understock treatment, i.e. selecting a grafting position at the smooth and straight part of understock, and drilling a hole so as to form a threaded hole of a certain size; 2) scion treatment, i.e. selecting a fresh branch as a scion, and tapping at the bottom of the scion so as to form a screw-shaped joint which has the same size as that of the thread of the threaded hole of the understock; and 3) grafting, i.e. completely screwing the screw-shaped joint of the scion into the threaded hole of the understock. The novel grafting method has the advantages that the bias of a traditional technology is overcome, an original grafting implementation method is changed, and the survival rate of grafting reaches above 95%, thus the novel grafting method has a remarkable guiding significance for the development of the grafting technology. The grafting method can be widely applied to the field of breeding of fruit trees, forestry and flowers; and the grafting method is not limited by regions, so that the grafting method can be used for changing mountain forest into fruit bearing forest within a short period of time and changing a city into a large garden within a short period of time, thus the significance is profound significance.

The invention relates to 'a bark grafting method of apocarya' and belongs to the field of fruit trees and forest tree breeding. The method includes cutting a stock or a lignification branch of the apocarya in vigorous growth to the xylem, conducing inclining cutting on the portion above a cut to form a 45-degree cut, cutting downwards on an edge bark layer of the cut through a stem grafting knife for 3cm with cutting length as 3cm and cutting width determined by scion thickness and conducting scion branch processing and grafting. By means of the method, summer grafting survival rate of scions dormant in winter is greatly improved, the problem of scion grafting survival of ligneous plants like the apocarya which is introduced from the southern hemisphere in summer is effectively removed, and simultaneously grafting period of the apocarya can be prolonged.

The invention provides an all-solid-state polymer electrolyte for a solid lithium ion battery and a preparation method of the all-solid-state polymer electrolyte. The polymer refers to a complex formed by polymerizing a methacrylic acid methoxypolyethylene glycol monomer, polydimethylsiloxane and an inorganic oxide, and an organic lithium salt is doped into the polymer. The method comprises the following steps: separating and performing vacuum drying on inorganic acid alkyl ester sol containing silicon or titanium group, monomers polyoxyethylene methyl methacrylate and polydimethylsiloxane and an initiator, thereby obtaining a PEGMEM-co-PDMS-inorganic oxide nanocrystal; adding an organic lithium salt into an organic solvent 3, performing film forming on turbid liquid in a film casting mode, removing the solvent 3, and performing vacuum drying, thereby obtaining the all-solid-state polymer electrolyte. Compared with the prior art, the all-solid-state polymer electrolyte prepared by a chemical grafting method disclosed by the invention has excellent conductivity and battery performance.

The invention relates to a grafting method of multi-rootstock one-scion comprising: the seedling is cut off after the interfaces of the accessing plant and the accessed plant are completely combined. The grafting method of the invention has a quicker combining speed than the common plant grafting method and a stronger combining ability than the common plant because the accessing plant and the accessed plant simultaneously grow and combine before the complete combination of the interfaces. Generally the scioning stem is not shorter than the stem of the rootstock, the distance between the scion root open part and the branch open part is long, the longer the distance is, the more the grafting rootstock number is, when the rootstock and scioning materials are chosen. The multi-rootstock one-scion grafting method can also be applied in summer, as long as the plant to be grafted has the growth combination ability, the plant can be grafted and the survival rate can be up to more than 95%. Not only the multi-rootstock can be grafted in one scion, but also the cycle grafting can be achieved, after the first multi-rootstock one-scion grafting seedling grows normally, the seedling can be grafted again with another similar plant.

The invention provides a hydrophility anti-pollution polyamide composite reverse osmosis membrane. The hydrophility anti-pollution polyamide composite reverse osmosis membrane comprises a porous supporting layer, a crosslinking polyamide layer and an acrylics or methacrylate structure unit which is grafted to the crosslinking polyamide layer through a free radical polymerization reaction and contains hydrophilic groups. The invention further provides a preparation method of the hydrophility anti-pollution polyamide composite reverse osmosis membrane. A layer of hydrophility molecular brushes are formed on the surface of a polyamide composite membrane through a free radical polymerization grafting method, the grafting density is higher, and the prepared polyamide composite membrane has better hydrophility and pollution resistance. The preparation method is simple, easy to operate, short in process, low in cost and capable of realizing industrial large-scale production.

The present invention provides carbon quantum dots, preparation method and uses thereof. The preparation method of the carbon quantum dots comprises the following steps: (1) preparing a dispersion of carbon based material; (2) mixing a solution of halogenated quinone with the dispersion of carbon based material and preparing a dispersion of carbon based-halogenated quinone composite material by halogenated quinone grafting method; (3) adding a solution of H₂O₂ to the dispersion of carbon based-halogenated quinone composite material and carrying out reaction thereof, obtaining reaction products; (4) carrying out solid-liquid separation to the reaction products, with the resulting filtrate continuing to react, thus obtaining a dispersion of carbon quantum dots. This method adopts metal-free catalytic oxidation, the process of which is safe, convenient and low-cost, and is performed under a mild reaction condition without adding additional substances which are difficult to be separated. The obtained quantum dots have a good dispersibility and can be easily separated, also can achieve pollution treatment using pollutants. In addition, the prepared carbon quantum dots have a broad application prospect in the fields of organic pollutant degradation, electrochemical sensors, super capacitors, luminescent materials and photoelectric devices, etc.

The invention discloses a propagation method of a lithocarpus polysachyus rehd young stock grafting container-grown seedling. The propagation method comprises the operation steps of young stock cultivation and grafting propagation, and is characterized in that a common lithocarpus polysachyus rehd seed is selected, is immersed for one day before being sowed, is dressed by a dipterex solution and then is stored in wet sand, the germinant seed is taken out from the wet sand and is used for culturing a stock in a container for seedling growth, after the nursery stock comes out of the ground, water and fertilizer management and plant diseases and insect pests prevention and control are reinforced, when the ground diameter of the young seedling reaches up to more than 0.3cm, the young seedling can be used for grafting, a half lignified branch is collected from an excellent lithocarpus polysachyus rehd seed tree and serves as a cutting for grafting, a cut-grafting method is adopted for grafting, when young sprouts come out from the cutting, a plastic film is uncovered, sprouts growing on the stock are timely removed, and fertilization application is stopped when winter comes, so that the grafted seedling is enabled to be fully lignified, and the grafted seedling can be taken out of a garden for forest planting in the spring next year. The method is capable of keeping the excellent characteristics of the seed tree, is high in survival rate, is simple and convenient, is easy to popularize, and is suitable for large-scale production and operation for a leaf forest of dwarfing and intensively cultivated lithocarpus polysachyus rehd.

The invention belongs to the technical field of plant propagation, in particular to a Chinese rose or rose rapid propagation method by utilizing a non-thorn multiflora for no-root grafting. The method includes 1, shearing a branch of an annual non-thorn multiflora, cutting the branch with the length of 15 to 20 cm, and keeping 1 to 2 buds to serve as grafting rootstocks; 2, selecting an annual or less annual Chinese rose or rose to serve as scions, cutting the Chinese rose or rose with the length of 10 to 15 cm, and keep 1 to 2 buds; 3, grafting the scions to the rootstocks by the grafting method, tying through a plastic film tightly, and cutting cuttings into growing matrix; 4, shielding, moisturizing and preventing the cuttings from freezing injury; when buds sprout in the next year, keeping the buds sprouted on the scions, and removing the buds sprouted on the rootstocks; 5, transplanting obtained cutting seedlings to the field after 45 d. By the aid of the method, survival rate is high, growth potential of the seedlings is strong, and the seedlings can be propagated annually.

A corona induced grafting method for modifying the millipore polymer membrane to improve its hydrophilicity, anti-pollution performance and biocompatibility includes such steps as corona treating of hydrophibic millipore polymer membrane for 15-120 S to generate the active centers on its surface for inducing polymerization, and immersing it in the hydrophilic olefinic monomer solution at 30-70 deg.C for 0.5-24 hr to form a hydrophilic layer on its surface.

The invention discloses a pollution-resistant modified method for a polymer membrane containing arone perssad. The method comprises the following steps: poly(methyl)acrylic acid epoxy alkyl ester is grafted on the surface of an ultra-(micro-)filtration or nanofiltration membrane through ultraviolet graft polymerization; further reaction is conducted to generate alkyl halide; the alkyl halide is conducted by reaction with acrylic acid betaine compounds under the condition that certain catalyst, ligands or reducing agent are subsistent; the ultra-(micro-)filtration or nanofiltration membrane with favorable hydrophilcity and pollution-resistant performance is obtained. Purified water flux of the prepared ultra-(micro-)filtration or nanofiltration membrane can reach to 50-280 L/m<2>.h; the reject rate of the pollution-resistant ultra-(micro-)filtration or nanofiltration membrane to bovine serum albumin is 95-100%; the recovery rate of water flux reaches to 97-100%. The pollution-resistant modified method is characterized in that a small quantity of initiating agent functional groups are introduced quickly on the surface of the membrane through the light graft method; then graft polymerization is conducted in water phase adopting an atom free radical transferring polymerization method; the pollution-resistant modified method has the advantages that the polymerization system can be repeatedly used, and is easy in continuous production; the polymer is grafted with the zwitter ionic pair perssad with a betaine structure, so that the surface of the membrane is high in hydrophilia; the pollution-resistant capability is improved remarkably.

The invention provides a watermelon grafting method which comprises the following steps of: 1) managing before sowing and grafting a first section of stock pumpkin: selecting seeds, sterilizing the seeds and accelerating germination, configuring nutrient bowls, and managing after sowing; 2) managing before sowing and grafting a second section of stock pumpkin: selecting seeds, sterilizing the seeds and accelerating germination, configuring the nutrient bowls, and managing after sowing; 3) managing before sowing and grafting scion watermelon: selecting seeds, sterilizing the seeds and accelerating germination, configuring the nutrient bowls, and managing after sowing; 4) grafting scion and interstock calabash; 5) grafting the interstock calabash and the first section of stock pumpkin; and 6) managing after grafting: managing temperature, managing illumination, managing sterilization, managing moisture and managing fertilizer. According to the method, the continuous cropping diseases of the watermelon can be effectively resisted, the flavor and quality of the watermelon can be effectively guaranteed, and the economic benefit of watermelon production can be further guaranteed.

The invention discloses a making method of hydrophilic nanometer filter membrane, which is characterized by the following: the basement membrane is an optically active polymer ultrafilter membrane, which introduces at least two strong polarity hydrophilic monomers in the photosensitizer or non-photosensitizer condition through irradiation copolymerization grafting method; the nanometer filter membrane displays good hydrophilicity, which possesses high interception rate and effusion flux for II-valence ion.

The invention discloses a grafting machine and a grafting method. The grafting machine comprises an operation platform, a stock carrying device, a stock jack device, a scion holding device and a grafting device, wherein the stock carrying device comprises a first rotating cylinder, a rotating arm, a first stock clamp and a second stock clamp; the first rotating cylinder is arranged on the operation platform; the rotating arm comprises a middle fixed end and two free ends; the fixed end is connected to the first rotating cylinder; the first stock clamp is arranged on one free end; the second stock clamp is arranged on the other free end; the stock jack device and the scion holding device are respectively arranged on the operation platform; the scion holding device is connected to the grafting device; the stock jack device is arranged above one free end of the rotating arm; and the scion holding device is arranged above the other free end of the rotating arm. By using the grafting machine and the grafting method provided by the invention, the operation waiting in the process of arranging the seedling jacks on the stock and the process of grafting butt joint is avoided, thereby increasing the grafting efficiency.