166results about How to "Good economic value" patented technology

The invention relates to high-temperature-resistant flame-retardant smoke-suppressing silicone rubber and a preparation method thereof. The silicone rubber comprises the following components in parts by weight: 50-70 parts of methyl vinyl silicone rubber; 5-10 parts of an organosilicon compound; 10-20 parts of an inorganic metal oxide; 20 to 30 parts of modified carbon black; 20 to 30 parts of a compound flame retardant; 4-6 parts of a vulcanizing agent; the modified carbon black is silanized carbon black; the compound flame retardant is formed by inserting zinc borate into graphite layers. Compared with the prior art, the obtained silicone rubber has good high-temperature stability and excellent aging resistance, through synergistic compounding of the modified carbon black, the compound flame retardant and the metal oxide, the effects of smoke suppression, flame retardance and high temperature resistance are achieved, the mechanical property of the silicone rubber is remarkably improved, and the service life of the silicone rubber is prolonged. The application range of the silicone rubber product is wider, and the economic value is good.

The invention discloses a Leymus chinensis drought resistance character related SNP molecular marker and application, the molecular marker is selected from one of SNP1, SNP2, SNP3 and SNP4, a molecular marker combination is formed by combining four markers of SNP1, SNP2, SNP3 and SNP4, the molecular marker combination is C, GC, T and ATG homozygous genotypes according to the sequence of SNP1-SNP4, that is, when the molecular marker combination is CC-GGCC-TT-AATTGG genotype combination, the corresponding Leymus chinensis has the strongest drought resistance. According to the molecular marker related to the drought-resistant character of the leymus chinensis and the combination of the molecular marker, the drought-resistant character of the leymus chinensis can be accurately evaluated at the molecular level, a drought-resistant seed source is accurately and efficiently screened at the seedling stage of the leymus chinensis, and the breeding period of the leymus chinensis is shortened.

The invention discloses an extra-thick coal seam narrow coal pillar double-roadway tunneling and entry retaining stability control method. The method comprises the following steps that S1, the roadway position of a first mining working face is determined; tunneling is conducted from the two sides respectively, a first mining working face air return gate way is excavated on one side in a single-roadway tunneling mode, and an asymmetric first mining working face haulage gate way and a first mining working face air inlet gate way are excavated on the other side in a narrow coal pillar retaining double-roadway tunneling mode at the same time; s2, tunneling of a gate way in the first mining working face; s3, in the stoping process of the first mining working face, top cutting pressure relief is conducted on a top plate on an advanced working face of a haulage roadway of the first mining working face, and grouting reinforcement is conducted on a coal pillar plate and a slope transition section coal body on a lagging working face of an air inlet roadway of the first mining working face; and S4, tunneling and stoping of the continuous working face. The lateral confining pressure of the narrow coal pillar is improved through asymmetric arrangement of the two roadways, a structure with the weak upper portion and the strong lower portion is formed to transfer a preferential deformation position to adapt to top plate movement, the coal pillar anchoring environment is optimized, and ultra-thick coal seam narrow coal pillar double-roadway tunneling and entry retaining stable control is achieved.

The invention discloses concrete, a preparation method thereof and a bridge, and relates to the field of bridges. The material is applied to outer wrapping of the arch rib of the steel-concrete combined arch bridge and comprises the following raw materials: cement, fly ash, a nano admixture, a viscosity modified material, basalt fiber, an additive, fine aggregate, coarse aggregate and water. Wherein the nano admixture comprises nano silicon dioxide, nano calcium carbonate, nano titanium dioxide and dispersible rubber powder; the viscosity modified material comprises stone powder, mineral powder, cellulose ether and glass beads. The arch rib encased concrete for the steel-concrete combined arch bridge is successfully prepared by doping functional materials such as a nano admixture, a viscosity modified material and basalt fibers into the concrete, and the requirements of high strength, high binding power, high air tightness, high crack resistance, large flow regime and high quality of the encased concrete are met.

The invention relates to the technical field of industrial waste heat recycling, in particular to an electric heating device and method for superheating saturated steam generated in the evaporative cooling process of a converter, an electric furnace and a steel rolling heating furnace in the iron and steel industry. Clean energy electricity serves as a heat source, saturated steam is heated into superheated steam through the steam superheater, the quality of the saturated steam can be effectively improved, damage of steam condensation water is prevented, and meanwhile steam conveying loss can be reduced; and compared with a traditional fuel gas type overheating device, other emissions are not added, and the problem of environmental pollution cannot be generated. The method is particularly suitable for the superheating process of high-temperature flue gas of a converter and an electric furnace in steel production and saturated steam generated by evaporative cooling steam drums such as a supporting beam in a heating furnace, the quality of (saturated) steam can be greatly improved by adopting the method, meanwhile, the harm caused by condensation of steam into water due to temperature reduction can be prevented, energy waste is effectively reduced, and the production cost is reduced. And the method has high economic benefits.

The present application provides a photovoltaic storage and hydrogen sharing system and photovoltaic storage and sharing device, in which photovoltaic panels are installed on or next to the atmospheric pressure hydrogen tank, and the photovoltaic panels and the atmospheric pressure hydrogen tank constitute a photovoltaic storage and sharing device with complementary functions and integration; when there is sufficient sunlight, the photovoltaic panels supply power to the hydrogen generator to produce hydrogen, and the hydrogen is stored in the atmospheric pressure hydrogen tank; when there is no sunlight, the hydrogen fuel cell receives hydrogen to generate electricity. The present application reduces the energy storage cost of the entire life cycle, opens up a new low-cost technical path for photovoltaic power generation to replace thermal power, and provides a possibility for hydrogen to replace biogas.

The invention discloses a salt-resistant modified cationic starch-based flocculating agent, a preparation method thereof and application of the flocculating agent in flocculating and harvesting microalgae, and belongs to the technical field of flocculating materials. The preparation method comprises the following steps: (1) firstly mixing and stirring an alkali solution and starch, then adding a modifier solution dodecenyl succinic anhydride (DDSA), mixing and reacting, and finally washing and drying to obtain modified starch; and (2) firstly mixing and stirring an alkali solution and the modified starch obtained in the step (1), then adding glycidyl trimethyl ammonium chloride (GTA), mixing and reacting, and finally washing and drying to obtain the modified starch. According to the invention, the starch is subjected to cationization modification and hydrophobic modification through GTA and DDSA, the salt-tolerant modified cationic starch-based flocculant is successfully prepared, the flocculant has good salt tolerance in microalgae flocculation harvesting, the yield of 80% or more can still be achieved under high salinity, the dosage of the flocculant is small, and the flocculant has excellent economic value.

The present invention relates to a method for recovering retired ternary lithium battery positive electrode materials, wherein the ternary positive electrode materials are sequentially stripped, crushed, and acid-leached, and then subjected to two electrolytic cell treatments, wherein the first treatment is carried out at a pH of 3 to 6, and the acid leaching solution is used as an electrolyte at a temperature of 10 to 100 A / m 2 Electrolysis is carried out for 3-8 hours at a current density of , and MnO2 at the anode of the electrolytic cell, the Ni-Co complex at the cathode of the electrolytic cell, and the lithium salt in the electrolyte are obtained respectively. The lithium salt is precipitated by sodium carbonate to separate Li, Mn, and Ni-Co. The recovery rate of each metal is high and the purity is good. After that, the electrode containing the Ni-Co complex is continued to be electrolyzed in the electrolytic cell, and the metal nickel and cobalt are separated by controlling parameters such as pH and electrolyte composition. The present invention can efficiently and accurately recover the valuable metals of the ternary positive electrode materials of retired lithium-ion batteries through simple electrolytic cell treatment, is simple to operate and has high economic value.

The invention discloses a wheat yield prediction method based on machine learning, and relates to the field of agricultural prediction, wheat remote sensing data to be tested are preprocessed and then are combined with current environment parameters and growth time information to be input into a trained wheat yield prediction model, and the wheat yield in the future is accurately predicted. By combining remote sensing data and environmental factors and utilizing a deep learning technology, the wheat yield prediction precision is improved, a scientific basis is provided for agricultural production decision making, and the method has remarkable economic value and good application prospects.

The invention provides a grouting anti-seepage reinforcement method for a dam body of a coal mine underground reservoir. The grouting anti-seepage reinforcement method comprises the following steps: determining parameters of a coal pillar dam body and an artificial dam body in the coal mine underground reservoir; the coal pillar dam body is detected, a seepage abnormal area of the coal pillar dam body is delineated, the fracture development condition of the coal pillar dam body is analyzed, and exploration verification is conducted through borehole peeping; around the seepage abnormal area of the coal pillar dam body, a plurality of first grouting drill holes are constructed from the side, close to the roadway, of the coal pillar dam body to the side, close to the water storage goaf, of the coal pillar dam body, and segmented grouting is conducted on the first grouting drill holes; and a plurality of second grouting drill holes are constructed in the artificial dam body, and a polyacrylate modified cement material is used for grouting the second grouting drill holes. By means of the method, cracks in the coal pillar dam body, cracks in the joint of the artificial dam body, the top and bottom plate rock strata and cracks in the joint of the artificial dam body and the coal pillar dam body can be effectively filled, a multi-layer segmented grouting reinforcement anti-seepage structure in the coal pillar dam body and a two-way grouting reinforcement anti-seepage structure between the coal pillar dam body and the artificial dam body are formed, and the compactness and impermeability of the dam body are improved.

The invention belongs to the technical field of degradable materials, and particularly relates to a degradable material for catering and a preparation method thereof. Raw materials of the degradable material comprise the following components in parts by weight: 50-90 parts of PBAT resin; 10 to 50 parts of PPCP resin; 5-30 parts of modified calcium carbonate; and 0.5-5 parts of a chain extender. The degradable material for catering disclosed by the invention has excellent light transmittance, barrier property and heat sealability.

The invention provides a clay type lithium ore crystal form transformation lithium-aluminum synergistic extraction method, and relates to the field of hydrometallurgy. The method comprises the following steps: mixing the clay type lithium ore with sodium hydroxide and a desiliconizing agent, and then leaching to obtain ore pulp; carrying out solid-liquid separation on the ore pulp to obtain sodium calcium hydrogen silicate slag and a lithium-rich aluminum solution; adsorbing lithium in the lithium-aluminum-rich solution by using an ion sieve, and carrying out lithium-aluminum separation to obtain a lithium-loaded ion sieve and an aluminum-rich solution; washing the lithium ion-loaded sieve with hydrochloric acid to obtain a lithium chloride solution; the aluminum-rich solution is used for extracting to obtain an aluminum product. The clay type lithium ore crystal form transformation lithium-aluminum synergistic extraction method provided by the invention has the characteristics of high lithium loading rate, relatively thorough lithium-aluminum separation, environmental friendliness, simple process and the like.

The invention belongs to the technical field of civil engineering, and discloses a self-adaptive modified waste slurry carbon sequestration environment-friendly pile and a preparation method and application thereof.The preparation method comprises the following specific steps that (1) waste slurry is sieved, and impurities are removed for standby application; (2) a curing agent is added into the waste mud obtained in the step (1) and mixed to be uniform, modified waste mud is obtained, and the curing agent is prepared from, by mass, 60%-80% of slag, 20%-30% of an alkali activator, 5%-15% of industrial byproduct gypsum, 5%-10% of charcoal and 0-0.5% of a composite additive; and (3) adding the modified waste slurry into a mold, and performing drainage consolidation and maintenance to obtain the self-adaptive modified waste slurry carbon sequestration environment-friendly pile. According to the method, green high-added-value recycling of the waste mud and comprehensive utilization of a large amount of solid waste can be achieved, the treatment cost is reduced while carbon reduction and carbon sequestration are achieved, the soft soil foundation is effectively reinforced and improved, the problem of foundation settlement is solved, and the bearing capacity is improved.

The invention discloses a preparation method of a coal-based porous graphene composite ternary material, and belongs to the technical field of material preparation. The method comprises the following steps: refining raw materials; carbonizing the coal raw material; mixing the activating agent with the product; activating the mixture; cleaning and drying an activated product to obtain a coal-based porous graphene material; mixing the ternary metal salts; mixing the mixture with a lithium source to obtain a precursor material; sintering the precursor material; cleaning and drying a product to obtain a ternary material; according to preparation of the composite material, low-cost coal is adopted as a porous carbon precursor, the coal-based porous graphene material is effectively prepared through a method of first carbonization and then activation, and the method is suitable for mass production; a potassium-based activator is utilized to simplify the process, catalyze the graphitization process and promote the synergistic development of pores and a graphite microcrystalline structure; the coal-based porous graphene and the ternary material are compounded, and the high-specific-energy hybrid capacitor positive electrode composite material is prepared based on a body surface collaborative energy storage mechanism.

The invention discloses a method for determining extension distance and burial depth of a sulfide ore body in a coverage area based on deep penetration soil gas, which comprises the following steps of: acquiring existing drilling data, determining a surface position A of the sulfide ore body, and acquiring an included angle beta between the extension direction of the sulfide ore body and a vertical drill rod and an inclination direction; soil gas geochemical measurement is conducted in the horizontal projection direction of the ground in the extending direction of the sulfide ore body, and the content of SO2, H2S and CO2 above the sulfide ore body is obtained; after contrast processing is conducted on the content of each gas, gas anomaly profile maps are compiled respectively, and vertical earth surface positions B and C corresponding to the two ends of abnormal extension of the profile maps are divided according to the gas anomaly profile maps; according to the positions A, B and C and the included angle beta, a comprehensive profile map is drawn, and the extension length and the buried depth of the two ends of the sulfide wide body are calculated. According to the method, the sulfide ore body is accurately positioned by measuring the gas abnormal coverage area.

The invention firstly provides an intestinal tract targeted pH-ROS double-response hydrogel packaging system, the hydrogel packaging system is sodium alginate (SA)-based hydrogel modified by ketothioacetal (tK) and calcium ions, and the hydrogel is used for intestinal tract probiotics lactobacillus rhamnosus GG (LGG). Wherein the hydrogel in unit volume contains 10 < 8 >-10 < 9 > CFU of LGG (Ligusticum Glycol Glycol); the LGG is the LGG modified by EGCG-Mn nano particles, namely LGG (at) EGCG-Mn. The hydrogel matrix adopted in the packaging system not only provides enough gastric acid resistance for the LGG, but also promotes colon targeting and enhances intestinal retention. More importantly, the modification of the EGCG-Mn nanoparticles endows the LGG with a cell protection capability in an excessive ROS environment, so that targeted release, stable survival and colonization of the LGG after the LGG reaches the colon are realized. The technical problems that the LGG cannot reach the colon sufficiently and is difficult to survive stably in the prior art are solved, and an unexpected technical effect is generated; and the method is simple to operate, quick in reaction and mild in reaction condition, and has important practical application prospects.

The invention belongs to the related technical field of signal monitoring, and discloses a three-dimensional piezoelectric force measuring device integrated on a main shaft, which comprises the main shaft, an adaptive knife handle, a shell, a piezoelectric sensor and a circuit carrier, the shell and the piezoelectric sensor are both in a circular ring shape. The shell is fixed on the lower end surface of the main shaft and comprises an upper connecting shell, a middle frame and a lower connecting shell which are hermetically connected from top to bottom; the upper end face of the piezoelectric sensor is tightly attached to the matching end face of the main shaft, a sealing rubber ring is arranged between the lower end face of the piezoelectric sensor and the lower connecting shell, a closed cavity is defined by the shell and the piezoelectric sensor, and the circuit carrier is installed in the cavity; and the inner diameter surface of the piezoelectric sensor is in clearance fit with the adaptive cutter handle. The piezoelectric sensor is installed on the matching end face of the main shaft HSK knife handle, the shell and the signal collecting system are fixedly connected to the main shaft to measure the cutting force, continuous measurement of the cutting force is not affected by knife handle switching, and the application scene that a single force measuring device is matched with a plurality of knife handles is achieved.

The invention provides radiation and evaporation integrated refrigeration fabric and a preparation method thereof, and belongs to the field of radiation refrigeration materials. The radiation and evaporation integrated refrigeration fabric comprises a hydrophobic layer, a transfer layer, an evaporation layer and a radiation refrigeration layer with the hydrophobic property. The four layers are prepared layer by layer through an electrostatic spinning technology and are stacked layer by layer. The hydrophobic layer, the transfer layer and the evaporation layer have the hygroscopic gradient from hydrophobic to hydrophilic and the diameter gradient from large to small of the fiber diameter. Sweat is prevented from reaching the outer surface of the fabric through the hydrophobic radiation refrigeration layer on the top layer, and the problem that the radiation refrigeration effect is reduced due to the fact that the sweat is gathered on the surface of the fabric and strongly absorbs sunlight in the near-infrared band is solved. Sweat generated on the skin side can be quickly transferred from the hydrophobic layer and transferred to the evaporation layer for evaporation under the action of pressure difference, so that the sweat evaporation rate is increased while the sticky feeling of the sweat on the skin side is avoided. Effective human body cooling is achieved through the combined action of radiation refrigeration and evaporation refrigeration.

The invention relates to the technical field of solid waste treatment, and provides a closed-loop dechlorination and desalination method for incineration fly ash. Soluble and insoluble chlorine salts in the incineration fly ash are removed through alkali washing, and then heavy metals and chlorine salts in alkali washing waste liquid are removed through heavy metal removal, primary dechlorination and secondary dechlorination. The Ca-Al layered double hydroxides obtained in the process can be circularly used for removing heavy metals, and the recovered alkali solution can be circularly used for alkali washing. According to the method, the removal efficiency of chlorine salts, especially insoluble chlorine salts, in the incineration fly ash is remarkably improved, meanwhile, removal of sulfate is promoted, calcium in the fly ash is reserved, and resource utilization is facilitated. And meanwhile, secondary environmental pollution caused by wastewater is effectively prevented. The byproduct Ca-Al layered bimetal hydroxide has a wide application prospect in the fields of gas adsorption, wastewater purification, catalysis and the like due to unique interlayer ion exchange property and excellent adsorption capacity, and has a good economic value.

The invention provides a photo-initiation system suitable for blue light as well as a preparation method and application of the photo-initiation system, and relates to the field of photo-initiators. The visible light initiator system comprises a photosensitizer and a co-initiator, the photosensitizer is MR-TADF and is composed of a plurality of carbazole compounds with boron and nitrogen atoms as the core and the periphery, the photosensitizer and the co-initiator iodonium salt are combined to form a photo-initiation system, and the polymerization of acrylate monomers is efficiently initiated under the irradiation of a blue light LED. The photosensitizer provided by the invention has strong absorption in the wavelength range of 460mm, and can be well matched with a blue light LED light source. According to the photosensitizer, under the condition that iodonium salt is added, polymerization of acrylate monomers can be efficiently initiated by irradiation of a blue light LED, and the problem that a photosensitizer containing transition metal or heavy atoms is used is solved. When the monomer is compounded with iodonium salt, the double-bond conversion rate of the monomer can reach 90% or above under the condition that the dosage is small.

The invention relates to the technical field of biotechnology, in particular to an artificial cultivation method of cordyceps sinensis sporocarp, which comprises the following steps: placing cordyceps sinensis in a liquid fermentation culture medium for fermentation to obtain cordyceps sinensis conidia liquid; the method comprises the following steps: injecting a cordyceps sinensis fungus conidium solution to the surface of a hepialus armoricanus larva body to infect the larva, placing the injected hepialus armoricanus larva in a culture medium simulating natural ecological conditions, and breeding in a first artificial climate box to obtain bombyx batryticatus; putting the bombyx batryticatus in a substrate simulating natural ecological conditions, covering the bombyx batryticatus with a layer of substrate, and culturing in a second artificial climate box to obtain the bombyx batryticatus overgrown with fungus coats; and planting the bombyx batryticatus overgrown with the fungus coats in soil, and culturing in a third artificial climate box to obtain cordyceps sinensis sporocarps. The cordyceps sinensis cultivated by the method is short in production period and low in heavy metal content, and can be produced on a large scale.

The present invention relates to a food-grade cross-linking agent with high permeability and its application. The food-grade cross-linking agent with high permeability is a pre-cross-linked oligosaccharide containing two reducing ends in a single molecule obtained by treating pre-cross-linked starch, and can improve substrate performance by reacting with amino substrates to generate Maillard reaction and acetal or hemiacetal reaction with hydroxyl substrates. The cross-linking agent is food-grade, not only has very high safety, but also has the advantages of simple preparation and strong cross-linking activity; in addition, the cross-linking agent also has high permeability, and can significantly improve the stability of cross-linked substrates, especially bulk substrates, when cross-linked.

The invention relates to a communication control method and device, computer equipment, a readable storage medium and a program product, which are applied to a control unit, are arranged in a system in which a ground terminal and a low-altitude terminal coexist, and are used for dynamically combining a cellular unit and a cellular-free unit in the system. The control unit is in communication connection with all cellular base stations on a flight path of the low-altitude terminal; the method comprises the following steps: determining a target cellular base station meeting requirements from adjacent cellular base stations according to network performance index values of the adjacent cellular base stations located around a low-altitude terminal and sent by the low-altitude terminal; adjusting the type of the target cellular base station to a mixed base station comprising a cellular unit and a non-cellular unit; wherein the ground terminal is served by the cellular unit, the low-altitude terminal is served by the non-cellular unit, and wireless resources are dynamically shared between the cellular unit and the non-cellular unit in the hybrid base station. By adopting the method, the same-frequency interference when the ground network and the low-altitude network coexist can be reduced.

The invention discloses a flight control method and system based on multi-information cooperative control, and the method comprises the steps: enabling a flight computer to obtain a signal of each sensor and a predetermined target position, initializing an ideal track of an aircraft, and obtaining an ideal position of the aircraft; gNSS and IMU failure detection factors are calculated, and the actual position of the aircraft is determined according to the failure detection results of the GNSS signals and the IMU signals; when the distance between the actual position of the aircraft and the preset target position is greater than a distance threshold value, calculating a deviation time interval and adaptive optimization time to obtain corrected acceleration of the aircraft under the condition that the deviation between the actual position of the aircraft and the ideal position of the aircraft is greater than a position deviation threshold value, otherwise, continuously monitoring each signal parameter; and when the distance between the actual position of the aircraft and the predetermined target position is smaller than or equal to the distance threshold, screening the target through the infrared image. According to the method, signal failure detection, correction algorithm optimization and pixel temperature screening are combined, so that precise navigation of the aircraft is realized.

The invention relates to the technical field of glass thinning liquid recovery treatment, in particular to an adsorbent for cover plate glass thinning liquid recovery and a preparation method and application thereof.The preparation method includes the steps that activated carbon is soaked in a metal salt solution to obtain activated carbon carrying metal ions, the activated carbon carrying the metal ions is subjected to high-temperature calcination to obtain the adsorbent, and the adsorbent is placed in cover plate glass thinning waste liquid for adsorption; desorbing the adsorbent loaded with the adsorption substance to obtain a desorption material which can be directly sold as a raw material; and residual waste liquid is filtered and reused in the thinning process. The method is simple, green and environment-friendly, the adsorption process is simple, resource utilization of cover plate glass thinning waste liquid treatment is achieved, the problem of environmental pollution in the cover plate glass industry can be effectively solved, sustainable development of the cover plate glass industry is promoted, and very good economic value is achieved. The problems that in the prior art, the glass thinning liquid recovery treatment process is tedious, and the economical efficiency is poor are solved.

The invention relates to a synchronous detection method for impurities contained in candesartan cilexetil and amlodipine besylate, which is suitable for quality control of compound preparations. According to the method, a high performance liquid chromatography technology is adopted, an octadecyl silane bonded silica gel column is used as a chromatographic column, gradient elution conditions are optimized, a water-acetonitrile-trifluoroacetic acid mixed solution is used as a mobile phase A, and an acetonitrile-water-trifluoroacetic acid mixed solution is used as a mobile phase B; according to the method, the impurity contents of amlodipine besylate and candesartan cilexetil are respectively detected under the wavelengths of 240 nm and 253 nm through gradient elution, the separation degree R value is greater than 1.5, the detection sensitivity is high, and the lower quantification limit reaches 0.05%. The method can simultaneously separate and quantify various process impurities and degradation impurities of candesartan cilexetil and amlodipine besylate in the compound preparation, and has the characteristics of high efficiency, accuracy and stability. The method is easy and convenient to operate, low in cost and suitable for compound preparation quality control under the industrial production condition, and scientific support can be provided for improving the medicine quality standard.

The invention discloses a preparation method of retarded shrinkage alkali-activated slag-calcined coal gangue cement, and belongs to the technical field of concrete materials. Slag powder, calcined coal gangue fine powder and calcium carbonate whiskers are used as powder, and then a mixed alkaline activator prepared from water glass, sodium hydroxide and sodium carbonate is doped to prepare the retarding shrinkage-reducing alkali-activated slag-calcined coal gangue cement. The method can effectively solve the problems of short setting time and large shrinkage of the alkali-activated cement, and is expected to realize large-scale engineering application of the alkali-activated cement.

The invention discloses a soapberry SmSEP3 gene and application thereof, the gene is expressed in a plant to regulate and control the flowering time of the plant and promote pistil development, sepal curling and pod development, and the gene is a nucleotide sequence as shown in a sequence table Seq ID NO.1 or a nucleotide sequence of an amino acid sequence as shown in a coding sequence table Seq ID NO.2. The gene is used for cultivating new soapberry varieties with different flowering times, different flower types and larger fruits. Through the analysis of transgenic arabidopsis thaliana, the bolting and flowering time of the plant can be advanced through the overexpression of the arabidopsis thaliana, the pistil is obviously lengthened, sepals are curled, and the fruit volume is larger. The flowering time, bolting days and rosette leaf number of the transgenic arabidopsis thaliana plant are obviously different from those of a wild plant, pistil development is longer, fruit pods are increased, the breeding cycle of the sapindus tree species is accelerated, ornamental varieties of different flower types are cultivated, and cultivation of high-yield new varieties is accelerated.

The present invention relates to the technical field of biogel materials, and in particular to an injectable calcium hydroxyapatite filling and repairing gel and a preparation method thereof. The present invention coats calcium hydroxyapatite on the outside of a MOF nanotube loaded with dopamine. After implantation, the calcium hydroxyapatite serving as a shell degrades and exists in the soft tissue in the form of calcium ions and phosphate ions, stimulating the production of collagen and achieving tissue remodeling. After the calcium hydroxyapatite is degraded, the MOF nanotube loaded with dopamine inside is exposed to a gel carrier and cross-linked to form a composite network structure, thereby reducing the degradation rate of the filler and achieving a long-term and full filling effect without repeated injections. The MOF nanotube encapsulated in the dopamine is evenly distributed in the soft tissue along with polymer cross-linking, and releases the contents after being degraded over time, thereby further improving the cross-linking degree of the polymer system and stimulating the production of human collagen, thereby improving the repair effect.

The invention belongs to the field of multi-component gas concentration, and particularly relates to a method for preparing high-purity gas by using a carbon dioxide trapping process, which comprises the following steps: collecting flue gas after combustion of helium-containing natural gas, and decarbonizing the flue gas by using basic hydroxide to obtain decarbonized tail gas and a carbon-rich solution; dehydrating the decarbonized tail gas to obtain dehydrated tail gas; carrying out adsorption separation on the dehydrated tail gas to obtain nitrogen, and carrying out adsorption separation on the denitrified tail gas to obtain helium; the carbon-rich solution is subjected to electrochemical regeneration, a cathode generates hydrogen, and an anode generates mixed gas; and carrying out membrane separation on the mixed gas to obtain CO2 and O2. The device and the method are suitable for the CO2 trapping process of the flue gas of the gas-fired boiler. The regeneration of the absorbent CO2 and the recycling of N2, He, H2 and O2 can be realized at the same time, so that the carbon capture and helium extraction cost is reduced, a new helium extraction mode is developed, and the method has a better application prospect.