142results about How to "Return to normal structure" patented technology

The invention provides a combination-typed mixing friction welding tool. The invention is characterized in that the tool consists of a shaft shoulder and a mixing needle; the shaft shoulder and the mixing needle with different structure design and different material can be exchanged with each other, and a whole welding tool can be formed after assembly. The combination design of the invention can provide greater flexibility for the preparation of the mixing friction welding tool, and provides the possibility for the replacement of the damageable part of the mixing needle. The mixing friction welding tool design of the invention can be applied to the working condition, in which the mixing needles are easy to be broken and abraded.

The invention provides a preparation method of a graphene/carbon ball composite material, belonging to the technical field of composite materials. The method comprises the following steps of: obtaining a graphene oxide precursor solution in an ultrasonic stripping manner; carrying out hydro-thermal treatment of glucose under a certain temperature to obtain carbon balls; and then self-assembling and reducing graphene oxide and the carbon balls under a certain condition to obtain the graphene/carbon ball composite material. The composite material is used as an electrode material of a super-capacitor. Because graphene agglomeration can be effectively prevented through the carbon balls in the composite material, a graphene electric double layer capacitor can be well displayed, therefore, the composite material shows excellent electrochemical performance.

The invention discloses supramolecular polymer clean fracturing fluid resistant to high temperature of 170 DEG C. The fracturing fluid is prepared from the following components in percentage by weight: 0.2 to 0.5 percent of thickening agent for the clean fracturing fluid, 0.1 to 0.5 percent of viscosity synergist, 0.2 to 0.4 percent of structural intensifier, 0.05 to 0.2 percent of deoxidant, 0.1 to 0.3 percent of metal ion chelating agent, 1 to 2 percent of clay stabilizer and the balance of fresh water. According to the clean fracturing fluid, a reversible supramolecular network structure is formed through the intermolecular interaction, and the thickening agent is low in use concentration and can be used for effectively controlling the viscosity of a base solution of the fracturing fluid and improving the pumping performance of the fluid; viscoelastic sand-carrying of the fracturing fluid is realized by low viscosity and high viscoelasticity; the temperature resistance can reach 170 DEG C under a long-term shear condition; the shear resistance is excellent, and the fluid viscosity and the structure after high shear can be effectively recovered; the construction friction is low, and the equipment load and the fracturing construction risk are reduced; the residue content is low, so that the damages to a reservoir stratum and prop fractures are greatly reduced, and the fracturing stimulation effect is greatly improved.

The invention discloses a single image defogging method based on sub-pixel and conditional antagonism generation network, which comprises the following steps: obtaining an original fogless image dataset and synthesizing the fogged data set according to a foggy day imaging model; inputting the fogged image to be processed into a generator G, wherein the network structure of the generator G is provided with a skip layer connection, a feature map with gradually reduced encoding output size is encoded, and the feature map is respectively obtained by deconvolution and sub-pixel in a decoding stage, and then the feature map is operated by convolution to obtain a fogless image output by the generator; inputting the non-fog image and the original non-fog image output from the generator G into thediscriminator D, and judging whether the non-fog image output from the generator D is true or not; the generators G and the discriminator D are constrained by antagonism at the same time, and the antagonism loss and L1 loss are calculated. The parameters of the generators G and the discriminator D are updated by back propagation according to the principle of stochastic gradient descent. When thetotal loss of the model converges, the training of the model is completed.

The invention provides a modifier for repairing rare earth tailing sand and a treatment method of the rare earth tailing sand. The modifier is prepared from sepiolite, animal dung, humic acid and charcoal in a mass ratio of (0.05 to 0.5) : (0.05 to 0.3) : (0.03 to 0.2) : (0.04 to 0.3). Under the coordination of the sepiolite, the animal dung, the humic acid and the charcoal, repairing of the rare earth tailing sand is realized, no chemical substance is introduced, and secondary damage to soil is avoided; moreover, the soil fertility is improved by comprehensive application of the modifier.

The invention relates to a self heat-generating and gas-generating clean fracturing fluid comprising the raw materials of, by mass: 0.2-0.5% of a thickening agent, 2-4% of a structural enhancer, 2-15% of a heat generating agent A, 2-10% of a heat generating agent B, 2% of a structural enhancer solvent, 1-5% of a heat generating catalyst, 0.1-1% of a cleanup additive, 0.05-1.0% of a gel breaker, 0.05-0.15% of a broken plastic additive, and balance of water. The fracturing fluid has good temperature resistance, good shearing resistance, and sand-carrying property. The fluid can automatically generate heat and gas, such that the fracturing fluid is foamed in stratum. The fluid has low filtration loss. Gel breaking can be carried out with conventional persulfate and stratum oil, gas, and water dual gel breaking manner. Quick flow-back after pressure can be realized, and low-pressure oil and gas well self-spraying flow-back effect can be greatly improved. No residue and low harm is caused. The fracturing fluid can be used in fracturing modification of middle-shallow-stratum high-pour-point oil, crude oil with high viscosity, and low-pressure low-permeability oil and gas reservoirs.

The invention discloses a big data-based plant type selection method. The method comprises the following steps of: collecting meteorological data and soil data in a target region; drawing various thematic maps; and establishing ecological big data so as to determine regions fit for the growth of plants, judge whether interspecific competition exists between target plants and native plants or not and then select other plants suitable for intergrowth. According to the method disclosed by the invention, a large number of ecology-related data is divided according to types and then integrated together; regions suitable for the growth of plants are rapidly divided by means of a big data platform according to the weather and soil information, so as to grasp the native plants of the regions; and the ecological characteristics of the plants are combined with the history big data of the local soil and weather to predict and judge whether a competition relationship exists or not, so as to finally correctly, efficiently and scientifically collocate the plants, effectively lighten the competition between plant interspecies and soil mineral nutrient elements, and enable various nutrients in the soil to be sufficiently utilized.

The invention provides a preparation method of a high polymer bonded explosive with a self-repair function, wherein the preparation method includes the following steps: step 1, firstly, carrying out areaction of excess diisocyanate with polyether/ester diol to produce a prepolymer with -NCO groups at both ends; step two, then, carrying out a reaction of furfuryl amine with a furan group with theprepolymer, to generate polyurethane with a furan end group; step three, carrying out a reaction of bismaleimide with the polyurethane, to generate a thermoplastic polyurethane with a DA bond; and step four, preparing a dilute solution from the thermoplastic polyurethane, and adding an explosive with metered proportioning; and heating to make the solvent gradually evaporated, then adding a properamount of deionized water, wrapping the surface of the explosive after the polyurethane is precipitated, filtering and drying, and thus obtaining the high polymer bonded explosive with the self-repairfunction. The invention also provides the high polymer bonded explosive with the self-repair function. The preparation method has the advantages of simple preparation process, mild conditions and high universality.

The invention relates to a permeable type asphalt regenerant and a preparation method thereof, belonging to the technical field of resource environmental chemistry. By virtue of a surfactant, aged asphalt can be rapidly moisturized through the regenerant, the blending of basic components in the aged asphalt can be realized through higher content of aromatics in the regenerant, oil in waste oil hasbetter permeability and lubrication to the aged asphalt, thus being beneficial to interaction of macromolecules and further increasing the plasticity of the asphalt; the polar groups in epoxidized soybean oil and dibutyl phthalate have chemical reaction with asphaltene to weaken the strong attraction between asphaltene molecules, so that the agglomerated asphaltene in the aged asphalt is evenly dissolved and dispersed in the asphalt colloid system again, and a spatial network structure formed due to agglomeration of asphaltene is destructed to weaken the barrier of the spatial network structure on the permeation of the regenerant, so that the permeation capability of the regenerant is improved, and the colloid structure and performances of the aged asphalt can be effectively restored.

The invention discloses a preparation technology of a novel nerve conduit, and belongs to the technical field of tents of biological tissue engineering. The preparation technology sequentially comprises a preparation technology of GDNF (glial-derived neurotrophic factor)-carried gelatin microspheres, a synthesizing technology of gelatin-methacrylamide hydrogel, a preparation method of polycaprolactone/gelatin electricity texture nerve conduits, and a combining method of the electricity texture nerve conduits and the GDNF-carried gelatin microspheres. The preparation technology has the advantages that a tent structure with good degradability, biological compatibility and biological safety is realized, and the GDNF is controlled and released by the GDNF-carried gelatin microspheres; compared with blank groups and collagen conduit groups, the regeneration of peripheral nerves is effectively promoted, and the structure and function of restoring damaged nerves can reach the effect similar to the effect of autotransplantation groups; the defect nerves can be bridged, and the stability of axon regeneration environment can be maintained; the invasion of peripheral connective tissues is prevented; the saturing of near and far-heart breaking ends of smaller nerve defect is solved, and the restoration of larger nerve defect is solved.

The invention relates to the field of graphene composite materials and discloses a nano silver loaded graphene antibacterial composite material and a preparation method thereof. A single-layer graphene oxide solution is obtained through a secondary ultrasonic dispersion technology and a discontinuous sheet layer is prevented; a carbon cake formed by mutually mixing a plurality of layers of graphene oxide sheets is innovatively subjected to secondary hydrothermal method reaction; green reduction agents including glucose and ascorbic acid and a green stabilizer soluble starch are adopted respectively and the hydrothermal method reaction is matched, so that the reduction rate is extremely improved and a sealing system with relatively high temperature and inner pressure is adopted; the recycling of dehydrated p conjugation is also promoted and the minimization of defects is facilitated; after heat treatment is carried out, the structure of graphene is easy to recover; the antibacterial activity of free Ag nanoparticles is remained in the composite material. The loading amount of silver particles in the nano silver loaded graphene antibacterial composite material reaches 58.0 percent and the antibacterial rate on escherichia coli reaches 99.9 percent.

The invention relates to Sichuan pepper planting equipment, and belongs to the technical field of gardening and vegetable cultivation. The equipment comprises a fixing rod, a frame and a water tank; asupport tube is connected to the side wall of the fixing rod, a through hole and a sliding groove are formed in the inner side wall of the support tube, a gear is rotationally connected to the outerside wall of the support tube, a water hole is formed in the bottom surface of the support tube, a water storage tank is matched with the interior of the support tube in a sliding mode, and a first spring is connected between the bottom surface of the water storage tank and the support tube; a water outlet is formed in the bottom surface of the water storage tank, a cover plate is arranged at thewater outlet, a wedge-shaped groove is formed in the cover plate, and a second spring is connected between the cover plate and the bottom of the support tube; the through hole is matched with a wedgerod in a sliding mode, and a third spring is connected between the wedge rod and the fixing rod; a rack is connected to a telescopic rod, and a gear ring is arranged on the outer side wall of the water storage tank; the rack is provided with a wedge-shaped surface, and a groove is formed in the wedge rod; the water tank is communicated with the water storage tank through a guide pipe which is provided with a water pump. Accordingly, by means of variations of the weight of the water in the water storage tank, comprehensive watering on Sichuan peppers is achieved, and operation is convenient.

The invention provides a preparation containing endometrium mesenchymal cell exosome, and relates to the technical field of biological stem cells. The preparation comprises, by volume, 5 parts of endometrium mesenchymal cell exosome and 95 parts of matrix solution. The matrix solution comprises 95-99 parts of multiple electrolytes injection liquid and 1-5 parts of medicinal human blood albumin, and endometrium mesenchymal cell exosome is derived from starvation culture of autologous endometrium mesenchymal cells, and the time of the starvation culture is 12-24 hours. The autologous endometriummesenchymal cells are extracted from the mesenchymal stem cells in a human endometrium and cultured by using a normal culture method. The culture time is 48-72 hours. The invention provides a medicine which is safe, effective and convenient to use for treating diseases such as endometrial damage and the like.

The invention relates to biomaterial hydrogel eye drops containing stem cell secreted exosome, good in cellular biocompatibility and biological activity. Active hydrogel can serve as the eye drops, and the exosome is slowly released into damaged tissue; the hydrogel can also enhance retention and local concentration of the exosome at injured sites to promote repair of eye tissue injuries, promotecorneal cells to survive and proliferate, reduce apoptosis, promote functional recovery of the injured sites, inhibit pathological angiogenesis and inhibit eye inflammation; meanwhile, after the active hydrogel is combined with the bioactive material, residence time of the exosome can be prolonged, drug treating times can be reduced, and accurate control of drug dosage is facilitated.

The invention relates to a haemorrhoids internal eliminating pill. The pill is convenient to use, has no toxic or side effect, can be used as a common backup medicine, is in accordance with the requirements of simpleness, convenience, low price and quick action, and is well accepted by patients.

The invention discloses a method for recycling and reusing a waste hydrocracking catalyst. The method comprises the following steps: (1) grinding the waste hydrocracking catalyst to screen, and roasting the powder for 1-8 h under the conditions that the oxygen volume content is 1-5% and the temperature is 300-600 DEG C; (2) adding the roasted powder in the step (1) into an alkaline buffer solution with the pH value of 10-14 according to a solid-to-liquid ratio of (1: 2) to (1: 10) to realize pulping at 40-80 DEG C for 30-240 min, carrying out solid-liquid separation after the pulping, and washing the filter cake to be neutral by distilled water; (3) taking the filter cake obtained in the step (2) as a raw material, and carrying out forming, drying and roasting to prepare the finished product of the hydrocracking catalyst. The method is simple in process; no high-pollution raw materials or a high-energy consumption treatment process is used, so that the green and environment-friendly recycle of the hydrocracking catalyst is realized and the requirements of the further social development are met.

The invention discloses a waste SBS (Styrene Butadiene Styrene) modified asphalt recycling method comprising the following steps: a, recycling waste SBS modified asphalt from a waste asphalt mixture by using the abson method; b, adding the waste SBS modified asphalt into fresh SBS modified asphalt according to the mass ratio of 70:30 to 90:10 of the fresh SBS modified asphalt to the waste SBS modified asphalt, stirring and shearing to obtain the recycled SBS modified asphalt. By using the method, the better service performance of an SBS modified asphalt pavement is ensured, meanwhile, the recovered SBS modified asphalt is reused for preparing the recycled SBS modified asphalt on the premise that no additives are used, defects such as high energy consumption, instable performance and the like in the recycle of the traditional SBS modified asphalt are overcome, the waste SBS modified asphalt recycling process is simplified, the environment friendliness of the recycled asphalt pavement is also improved, and meanwhile, the construction cost is greatly reduced.

The invention relates to a multi-exposure-image high-dynamic-range imaging method and system based on a generative adversarial network. The method comprises the following steps: firstly, preprocessinga low-exposure image, a normal-exposure image, a high-exposure image and a reference high-dynamic-range image serving as a label with original resolution to obtain grouped low-exposure, normal-exposure, high-exposure and high-dynamic-range image blocks for training; designing a generator network for multi-exposure image high dynamic range imaging and a discriminator network for adversarial training; alternately training the generator network and the discriminator network to converge to Nash equilibrium by using grouped low-exposure, normal-exposure, high-exposure and high-dynamic-range imageblocks; and finally, inputting the low-exposure image, the normal-exposure image and the high-exposure image which are used for testing and have original resolutions into a converged generator networkto obtain a high-dynamic-range image prediction result output by the generator network. According to the invention, the quality of a high dynamic range image generated when obvious background movement or object movement exists among multiple exposure images can be improved.

The invention provides an amniotic-membrane lacrimal passage repair support which comprises an amniotic-membrane support body made from an amniotic membrane subjected to freeze drying treatment and amedical suture connected to two ends of the amniotic-membrane support body. The length of the amniotic-membrane support body between two suture nodes is slightly larger than the length of the medicalsuture between the two ends of the amniotic-membrane support body. During traction of the amniotic-membrane lacrimal passage repair support, the amniotic-membrane support body is not stressed, it is ensured that the amniotic-membrane lacrimal passage repair support does not break in the lacrimal passage, easily adapts to a zigzag structure of the lacrimal passage, secondary blockage caused by thefact that pulling friction causes damage and adhesion of the lacrimal passage tissues, and meanwhile the amniotic-membrane support body has the very good treating effect on lesion tissues, is conductive to restoration of the epithelium structure and functions of the lacrimal passage, prevents scar formation and is high in efficiency, good in long-term effect and low in relapse rate. The amniotic-membrane support body can be degraded after being implanted without reoperation for removal, can be stored at normal temperature for a long time, is convenient to transport and can meet the clinic demand at any time.

The invention relates to the technical field of ecological engineering, and discloses a planting method for recovering a natural scirpus mariqueter population. The method comprises the following steps of pretreatment of a planting area, wherein the planting area is ploughed, and the terrain drop height is smaller than 5 cm after ploughing; germination accelerating of scirpus mariqueter seeds, wherein the scirpus mariqueter seeds are pretreated through cold storage for a period time and then placed under appropriate conditions for germination accelerating and germination; planting of scirpus mariqueter, wherein the germinated scirpus mariqueter seeds are sown in the pretreated planting area; water level control and later-period management in the planting area, wherein the water level should not be higher than 1 cm when the germinated scirpus mariqueter seeds are sown, should not be higher than 5 cm when the height of scirpus mariqueter seedlings is 10-15 cm and should not be higher than 10 cm when the height of the scirpus mariqueter seedlings is larger than 20 cm, the flooding time should not be longer than 2 days, the total proportion of weeds should not be higher than 0.1%, and spartina alterniflora plants need to be removed in time. According to the planting method, by planting the aboriginal plants-scirpus mariqueter, the structure and the functions of a salt marsh ecosystem are recovered, and the biodiversity of a salt marsh is improved.

The invention relates to a novel positive grid lead-calcium alloy for a lead-acid storage battery. The alloy is prepared from components in percentage by weight as follows: 0.05%-0.12% of calcium, 0.5%-1.5% of tin, 0.06%-0.11% of bismuth, 0.07%-0.15% of rare earth elements and the balance of lead, wherein the rare earth elements are one or more of ytterbium, gadolinium and lanthanum. The ingredients of the grid alloy are improved by adding tin, bismuth, the rare earth elements and other additives, and a novel deep-cycle and maintenance-free grid alloy material for the lead-acid storage batterywhich is corrosion-resistant, good in charging property and mechanical property and long in cycle life is obtained.

The invention provides a culture solution and method for producing a hemopoietic stem cell by reversely splitting a somatic cell and application of the culture solution. The culture solution for producing the hemopoietic stem cell by reversely splitting the somatic cell is a skin composed of a plurality of kinds of plant extractives and proteins by mixing and can be used for reversely inducing and splitting the human somatic cell so that the hemopoietic stem cells with a magnitude order of hundreds of billions are produced within two weeks; and the plant and protein inductive hemopoietic stem cells have cell specific phenotypes which are similar with those of human natural hemopoietic stem cells so that the hemopoietic stem cells not only have a plurality of kinds of application potentials for disease treatment and anti-aging health protection, but also are applicable to establishing a novel hemopoietic stem cell library to permanently preserve the natural hemopoietic stem cells for a long period. Compared with the traditional cord blood/bone marrow/peripheral hemocytoblast library, the novel autologous hemopoietic stem cell has the advantages of large number of produced/preserved stem cells, good monitor probability of the quality of the stem cells, wide application range and the like.

The invention discloses a method of extracting total alkaloids in chinese caterpillar fungus and uses. The extracting method includes digeratur of chinese caterpillar fungus ethanol solution, and using ultrasonic wave to extract total alkaloids in assistant, then proceeding vacuum concentration to the obtained extracting solution for producing extract, using HCl solution to dissolve the extract and adding ethyl ether, chloroform respectively to remove liposoluble substance, using NaOH to regulate solution pH, adding chloroform for extraction, condenseing the chloroform layer and drying to obtain the total alkaloids. The invention is provided with low process cost, high yield and convenient to operate. The invention provided total alkaloids of chinese caterpillar fungus has extensive novel uses in medicine for reversing hepatocyte damage caused by ethanol.

The invention discloses a preparation method of a damage self-healing polymer-based composite explosive. The preparation method comprises the following steps: step 1: firstly enabling excessive diisocyanate to react with polyether/ester diol to generate a prepolymer having -NCO groups at two ends; step 2: then enabling a diamine with a disulfide bond to react with the prepolymer having the -NCO groups at two ends to generate polyurethane having the disulfide bond; step 3: preparing the polyurethane having the disulfide bond into a diluted solution, adding an explosive in a metered proportion,heating the mixture to volatilize a solvent such that the polyurethane is precipitated and wraps the surface of the explosive, and filtering and drying to obtain the damage self-healing polymer-basedcomposite explosive. The high polymer product provided by the invention has a unique disulfide bond structure; after damage occurs inside the polymer-based composite explosive, dynamic exchange reaction of the disulfide bond occurs under a mild heating condition, so that the damaged part of the polymer-based composite explosive is re-bonded to recover the structure and the strength of the explosive.