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The invention discloses a near ultraviolet excited double perovskite single matrix white light fluorescent material and preparation and application thereof. The chemical formula of the double perovskite material meets A<2>B<1-x>C<x>B'<1-y>Ln<y>X<6>, wherein A, B and C are one or combination of more of normal monovalent cations or cationic groups, and A, B and C are different from one another; B' is one or combination of more of Al, Bi, In normal trivalent cations or cationic groups; and Ln is one or combination of more of various kinds of normal trivalent rare earth elements. The double perovskite material can particularly be applied for serving as white light fluorescent materials. Formation of two sorts of B-site elements of the double perovskite is improved, part of B is replaced with C, part of B' is replaced with rare earth element Ln, and by controlling and replacing the corresponding mole fraction x and y, the near ultraviolet excited double perovskite single matrix white lightfluorescent material is accordingly obtained. Compared with YAG (yttrium aluminum garnet):Ce<3+>, the near ultraviolet excited double perovskite single matrix white light fluorescent material is widerin emission spectrum range, simple to prepare, and particularly suitable for being applied to white light LED (light-emitting diode) devices.

The invention provides a Pt nano particle-carbon nano tube composite material, a method and an application thereof. The invention is characterized in that ammonia is used for pretreating the carbon nano tube; the carbon nano tube pretreated by the ammonia, sodium citrate, chloroplatinic acid and methanol are used as raw materials; and Pt nano particles are reduced on the outer wall of the carbon nano tube in situ. The weight ratio of the carbon nano tube and chloroplatinic acid, the proportion of the methanol and the sodium citrate and the types of carbon nano tube are improved to obtain the Pt nano particles with smaller particle size and even distribution to wrap the carbon nano tube. The composite material is dispersed in Nafion solution, the mixed solution is dripped on a glassy carbon electrode for natural drying and a thin film modified electrode can be prepared. The electrode has excellent electrocatalytic performance to oxidation reaction of H2O2 and methanol. The method has simple technique, convenient operation, low cost and easy obtaining for the used raw materials, has good application prospect in the electrocatalytic biological sensor and a methanol fuel battery and is applicable to industrial production.

The invention provides a method for controlling a POV display device to display images and animation. The method for displaying color images comprises the following steps that firstly, a round interesting area obtained from an image represented by an RGB color model serves as an image to be displayed; secondly, the image to be displayed is modularized in the radial direction and converted into a set of data which can operate on the display device and control light-emitting intensity of LED lamps; thirdly, the data are sent to the display device in a wireless mode, the display device extracts the data, and the LED lamps are controlled to display the image to be displayed in the rotating process. By means of the method for controlling the POV display device to display the images and the animation, free wireless switching between the images and the animation can be achieved for the display device, a user can zoom the images or the animation displayed by the display device, change the display angle, the content, the hue and the like of the images or the animation, and user experience is greatly improved.

The invention provides a voice navigation method, device and system. The method comprises the following steps: obtaining a broadcast statement template, corresponding to an induction point, from a configuration template file if determining that voice broadcast is needed according to distance between first position information of a mobile device and second position information of the induction point at present; generating a broadcast statement to be read according to the broadcast statement template; and generating a voice text to be broadcasted according to the broadcast statement and carrying out voice broadcast according to the voice text. By virtue of the voice navigation method, device and system provided by the embodiment of the invention, the broadcast statement to be read is generated by the broadcast statement template in the configuration template file when the voice broadcast is needed during the navigation; as the configuration template file can be updated or modified at any time, the content of the voice broadcast can be changed; the user experience is improved.

The invention belongs to the technical field of luminescent materials, and more specifically relates to an application of a double perovskite nanocrystalline material in preparation of an inorganic white light LED, the chemical general formula of the lead-free double perovskite nanocrystalline material is Cs<2-x>A<x>Ag<1-y>B<y>In<1-z>C<z>D<6>, and A and B are independently positive monovalent cations; C is a positive trivalent cation; D is a halogen anion; 0 < = x < = 1; 0 < = y < = 1.0; 0 < = z < = 1.0. According to the invention, the composition of each lattice element in the double perovskite is partially substituted; by controlling and replacing the corresponding molar fractions x, y and z, the correspondingly obtained ultraviolet-excited double-perovskite single-matrix white-light nanocrystalline is wide in emission spectrum range and simple to prepare, the related color temperature can be flexibly regulated and controlled along with components, and the ultraviolet-excited double-perovskite single-matrix white-light nanocrystalline is particularly suitable for electroluminescent LED chips.

The invention provides an absorbable vessel ligature clamp for a surgical operation and a method for preparing the absorbable vessel ligature clamp. The vessel ligature clamp is formed by the fusing and injection molding of a raw material which contains a biodegradable aliphatic polyester material by using a specifically-shaped mold. The vessel ligature clamp has a single-layer structure and is V-shaped. The ligature clamp is high in biocompatibility. Degradation time is controllable and can be matched with a vessel healing period after operation.

The invention discloses an in-vitro culture and proliferation method for human mesenchymal stem cells. A DMEM culture medium is taken as a basic culture medium and is sequentially added with L-glutamine, vitamin C, insulin and erythropoietin; then the PH value is adjusted by sodium hydroxide; finally, fetal calf serum is added and filtration sterilization is performed to obtain a new culture medium, and cells are cultured on the basis of the new culture medium. The method can remarkably improve proliferation quantity and cell activity of human mesenchymal stem cells, meanwhile keeps biological effects and multi-lineage differentiation, enhances the efficacy of repairing body histiocyte damage through cell transplantation, and can be promptly and effectively used in scientific researches and clinic cases.

For updating a basic input output system (BIOS) code stored in a non-volatile memory (NVM) included in an information handling system (IHS), a plurality of conditions permitting the updating of the BIOS stored in the NVM from a memory of the IHS are verified. The contents of the memory are preserved by disabling interrupts and disabling bus masters capable of causing a change in the contents of the memory. The BIOS stored in the NVM is updated from the memory. A user interface is provided to display status of the updating of the NVM to improve user experience. Upon completion of the updating the IHS is reset by enabling a cold reboot, thereby enabling the changes made to the BIOS to take effect.

The invention provides a dechlorinating agent as well as a preparation method and application thereof. The dechlorinating agent comprises a binder and a carrier, and also comprises 3.3-6.6 wt% of copper oxide and 5-25wt% of potassium permanganate, based on the total mass amount of the dechlorinating agent. Manganese atoms in potassium permanganate contain a large number of empty orbits, and chlorine atoms in organochlorine contain three pairs of lone electrons, so that adsorption and removal on organochlorine are improved; moreover, the oxidability of potassium permanganate can change the contents of acidic groups and basic groups on the surface of the carrier, so that the chemical properties of the surface of the carrier are changed, and the adsorption performance of the carrier to organochlorine and hydrogen chloride is improved; on the other hand, potassium permanganate can generate a synergistic effect with copper oxide and an adhesive, so that the affinity between each component and the carrier is improved, the loss of each component in the use process is reduced, and the chlorine capacity and the dechlorination efficiency of the dechlorinating agent are further improved; agglomeration among metal ions can be prevented, so that the metal ions are kept in a dispersed state on the surface of the carrier; and the chlorine capacity and the dechlorination efficiency of the dechlorinating agent are further improved.

The invention relates to the plant dormancy adjustment and control technical field, and discloses a dormancy agent for transplanting trees; each 1 L of the dormancy agent for transplanting the trees comprises the following components: 0.1-0.5 g of a polyamine biosynthetic inhibitor, 0.15-0.2 g of calcium chloride, 0.01-0.1 g of catechol, 0.01-0.05 g of coumaric acid, 0.005-0.01 g of salicylic acid, 0.008-0.05 g of abscisic acid, 6-8 ml of Tween 20, and the balance water. The invention also discloses a preparation method of the dormancy agent for transplanting the trees. The trees are subjected to dormancy induction before the trees are transplanted, seasonal restriction and technical barriers of tree full-year transplanting are overcome, and the transplanting survival rate of the trees is increased. The cost is low, the consumption is little, the trees restore quickly, the transplanting security coefficient is high, and the landscape effect is easy to form.

The invention discloses a planting and irrigation device for kiwifruit. The planting and irrigation device for kiwifruit comprises a water-preserving planting bucket, a main irrigation pipe, a water drainage ditch and an irrigation water temperature control system, wherein planting soil is sleeved with the water-preserving planting bucket which is formed by water-preserving soil, and the water-preserving soil is prepared by mixing polyacrylamide hydrophilic gel powder with soil powder; the water temperature of the main irrigation pipe is controlled through the irrigation water temperature control system which comprises a temperature-controlling water tank and a snakelike heat exchanger, and the snakelike heat exchanger is provided with a water heating tank and a refrigerant box; the temperature-controlling water tank is provided with a PLC, and control modes of the PLC include a high temperature mode and a low temperature mode. According to the planting and irrigation device for kiwifruit, the problem of water retention of the infiltration irrigation technology is effectively solved, the water-preserving capacity is strong, the water-preserving capacity is controllable, an effect of slow-release water supply is achieved, rot root and soil hardening caused by excess irrigation can be prevented, and meanwhile variable-temperature irrigation of a plating garden or field can be achieved while frostbite and hot dry can be effectively prevented; in addition, the growth of kiwifruit is facilitated, and the planting and irrigation device for kiwifruit is wide in range of application and suitable for promotion.

The invention relates to a high-toughness high-ductility zinc alloy and processing method thereof. The zinc alloy comprises the following components in percentage by mass: 0.025-0.05% of magnesium, less than 0.4% of copper, 3.8-4.3% of aluminum, less than 0.035% of ferrum, 0.02-0.1% of manganese, 0.05-0.8% of germanium, 0.02-1.5% of argentum, 0.05-2% of silicon and the balance of zinc; a smelting method of the high-toughness high-ductility zinc alloy comprises the following steps: adding above components in a smelting furnace in proportion, controlling the temperature of the smelting furnace within a range of 400-500 DEG.C, adding a fluxing medium after all components are dissolved into liquid, removing slag, and then removing zinc ash, pouring the solution into a die cavity for shaping. The high-toughness high-ductility zinc alloy and processing method thereof have beneficial effects of high yield, good plasticity, good corrosion resistance, small intercrystalline corrosion tendency and high size stability, the phenomena that the product is easy to break and fracture and the screw loose is easy caused by torsion are reduced.

The invention discloses reversible thermochromic ink as well as a preparation method and application thereof. Crystal violet lactone is used as a color former; boric acid is used as a color developingagent to prepare a thermochromic material; the thermochromic material is added into the ink, so that the ink is endowed with a thermochromic effect, is light blue at normal temperature, is grey whiteunder heat sources such as a lighter and the like, the anti-counterfeiting function of the ink is realized, printed images and texts can be subjected to color change through a certain heat source, and the color can be recovered after the heat source is removed for a period of time; the identification method is convenient and rapid, and thermochromism has reversibility.

The invention relates to a gas synergist, in particular an environmental protection energy-saving industrial fuel gas synergist and method for preparing same, wherein the synergist comprises (by weight proportion) diisopropyl ether 10-30 parts, ferrocene 1-5 parts, bicyclo ring alkadiene 1-7 parts.

The invention belongs to the technical field of genetic engineering of insects and particularly relates to a separated adelphocoris suturalis delta 9-desaturase gene and an encoded protein thereof. The nucleotide sequence of the separated adelphocoris suturalis delta 9-desaturase gene is represented by SEQ ID NO:1, and the encoded protein sequence of the gene is represented by SEQ ID NO:2. The invention further relates to application of the adelphocoris suturalis delta 9-desaturase gene as an RNA interference sequence. The adelphocoris suturalis delta 9-desaturase gene has a good silencing effect in the sequence pair. By injecting the interference sequence, the content of a pheromone component 4-oxo-trans-2-hexenal is obviously increased, the mixing ratio of the pheromone is changed, and the attraction force of females to males is remarkably inhibited. Furthermore, the protein can be applied to the development of biological pheromones or transgenic anti-insect plants or the biologicalprevention and control of adelphocoris suturalis.

The invention belongs to the technical field of cosmetics, and particularly relates to a moisturizing composition, a mask and a preparation method and application thereof. The preparation method comprises the following steps: firstly, mixing and heating water and auxiliary materials, and then carrying out low-temperature treatment to prepare a mixed solution A; adding plant and fungus composition fermentation liquor into the mixed solution A, and performing stirring treatment to obtain a mixed solution B; and enabling the mixed solution B to be subjected to low-temperature treatment, adding plant composition extraction essential oil, performing stirring treatment. The moisturizing and hydrating composition is prepared and can penetrate into the bottom layer of the skin, can change the oil-water ratio of the skin surface, can increase the absorption speed of the skin and can enhance the moisturizing effect of the skin; and meanwhile, the problems that active ingredients on the skin surface are easy to oxidize, the moisturizing effect persistence is poor, the moisturizing effect can only stay on the stratum corneum, and preservatives need to be additionally added can be solved.

The invention discloses a centralized supply original-liquid-type cleaning substation and relates to a cleaning device. The centralized supply original-liquid-type cleaning substation comprises a shell, a pressure adjusting valve and a mixing module; the mixing module is internally provided with a high-pressure water channel which is a Venturi tube; a compressed air inlet, a foaming agent suctioninlet and a disinfectant suction inlet are formed in the mixing module, and the three inlets are all provided with valves, the valves are opened, and the three inlets communicate with the middle of the high-pressure water channel; the mixing module is provided with an adjusting block which comprises a first station, a second station and a third station, and the three stations are adjusted, and thecorresponding valves are opened to switch the washing state; the foaming agent suction inlet is connected with a foaming agent pipeline, and the disinfectant suction inlet is connected with a disinfectant pipeline; and the ends of the foaming agent pipeline and the disinfectant pipeline are both connected with an original liquid supply station to provide certain pressure for the interiors of thefoaming agent pipeline and the disinfectant pipeline. According to the centralized supply original-liquid-type cleaning substation, switching of high-pressure water washing, foaming washing and disinfecting washing can be achieved by switching the adjusting block.

The invention discloses a suspension spring mechanism, and relates to vehicle accessory technologies. The suspension spring mechanism solves the problems that in the prior art, due to the fact that the rigidity of a suspension of a suspension system cannot change along with changing of road conditions and working conditions, the operation stability of an automobile is poor and the driving comfort of the automobile is low. The suspension spring mechanism comprises a spring body and an inner cavity is formed in the spring body along a spiral path of the spring body; the inner cavity is filled with liquid; a guide pipe is fixedly connected to the spring body, one end of the guide pipe is communicated with the inner cavity and the other end of the guide pipe is communicated with a cavity of an adjustable container; the adjustable container enables the liquid in the inner cavity to be sucked out and enables liquid to be injected into the inner cavity. The suspension spring mechanism is mainly applied to automobile suspension systems.

The invention discloses fishy smell removing albumen powder prepared from low-value fishes. The fishy smell removing albumen powder comprises the following components in parts by weight: 70-90 parts of fishy smell removing protein, 10-20 parts of sucrose, 1-3 parts of sodium cyclamate, 15-25 parts of calcium phosphate, 0.2-0.6 part of citric acid, 0.1-0.3 part of phosphoric acid and 0.08-0.16 part of chiral malic acid. The fishy smell removing albumen powder disclosed by the invention has the beneficial effects of effectively changing the content, sequence, position and spatial structure of hydrophobic amino acid and removing the fishy smell and bitterness of the hydrolyzed albumen powder of the low-value fishes, and the protein loss rate is relatively low. The prepared fishy smell removing albumen powder is rich in a lot of protein, higher in stability, convenient to store and free of harmful heavy metal and has a certain effect on treating edema and hypertension. The albumen powder prepared by the method contains free amino acids and mineral substances which are rich in variety and easy to be absorbed by the human body, so that the albumen powder is high-quality functional food.

The invention relates to a leatherware surface ball pen ink cleaning agent and a preparation method thereof. According to the basic formula, neither the cosurfactant nor the cosolvent is added, and the anionic surfactant AES is added to have the synergistic actions of the anionic surfactant AES and nonionic surfactants AEO-9 and OP-10; the AES content is changed to prepare the cleaning agent; and the test indicates that the cleaning rate is enhanced from 80% to 90%, and the cleaning rate does not obviously change when the AES content is 8% or above.

The invention discloses a preparation method of a high-surface quality degradable polymer hollow microsphere. The preparation method comprises the following steps: dissolving poly-alpha-methyl styrenein fluorobenzene as an oil phase; mixing a cationic macromolecule organic salt water solution and a PVA water solution in a certain proportion to form a uniform mixed water solution as an outer waterphase; respectively injecting ultrapure water, the oil phase and the outer water phase into corresponding channels of a dual coaxial emulsion granule generator by virtue of three precise micro-injection pumps, and preparing water-in-oil-in-water W1 / O / W2 dual composite emulsion granules; collecting the dual composite emulsion granules into a rotary evaporation bottle containing the outer water phase, and carrying out solidification by virtue of a rotary evaporator at a speed of 25rpm-35rpm and a heating temperature of 30-40 DEG C for 96-144 hours, so as to obtain the microsphere; and cleaningthe completely solidified microsphere by virtue of purified water at 65-85 DEG C, replacing an inner water phase with ethanol for 60-80 hours, and putting the microsphere into a drying tank, and drying at 34-50 DEG C, so as to obtain the hollow microsphere with high sphericity degree and surface quality.

The invention provides a device and a method for preventing blocking through electric permeation of a drainage belt. The device comprises the drainage belt, metal wires I and II and metal plates I and II, the two metal wires are fixed at the two ends of the drainage belt; the two metal plates are inserted into soil on the two sides of the drainage belt respectively. Direct-current electrodes are respectively arranged on the metal wires and the metal plate for electroosmosis, fine clay particles in soil are migrated to the periphery of the metal plate from the vicinity of the drainage belt, the content and distribution of the fine clay particles in the stratum around the drainage belt are changed, and the permeability coefficient of the stratum around the drainage belt is increased; the problems that due to stratum drainage consolidation, fine particles are gathered around a drainage belt, the drainage belt is blocked, and the permeability coefficient of a soil layer is reduced are effectively solved, the stratum drainage speed is increased, the construction period can be greatly shortened, the replacement period of the drainage belt is shortened, in addition, the metal plate can be recycled, and the construction cost is reduced; the invention provides an efficient and environment-friendly method for preventing the blockage of the drainage zone and improving the drainage efficiency of the stratum during stratum consolidation.

The invention belongs to the technical field of biomedical materials, and discloses a polyurethane membrane for invisible orthodontics, a preparation method and application. The polyurethane membrane for invisible orthodontics is prepared from the following components in parts by mass: 100-120 parts of diisocyanate, 180-280 parts of polyester or polyether glycol, 50-100 parts of nano hydroxyapatite, 50-100 parts of micromolecular dihydric alcohol or diamine, 400 to 600 parts of dimethylformamide and 1 to 10 parts of dibutyltin dilaurate. According to the preparation method, nano-hydroxyapatite is added while a prepolymer is subjected to a chain extension reaction; the nano-hydroxyapatite is doped into a formed polyurethane elastomer through an in-situ polymerization technology; by means of the covalent bond density between the nano-hydroxyapatite and a high polymer material and the physical cross-linking effect of the nano-hydroxyapatite, the strength and the rebound rate of the material are improved. By changing the proportion of the nano-hydroxyapatite, the performance of the finally obtained membrane can be regulated and controlled so as to adapt to the requirements of different patients.

The invention discloses a medium material and a cultivation technology of needle mushroom. The medium material comprises, by mass, 15-20 parts of cottonseed shells, 15-20 parts of corncobs, 25-30 parts of wheat skins, 20-25 parts of bagasse, 20-25 parts of pear tree branches, 5-6 parts of corn flour, 4-5 parts of amylose and 5-6 parts of marine trash fish meal. The components of the medium of needle mushroom are improved to realize reasonable and balanced matching of high-wood fiber materials and nutrient conditioning materials of the medium, and amylose and the marine trash film meal are added to change the content of organic matters and inorganic matters of the medium, so absorption and growth of mycelia are facilitated, and produced needle mushroom has high nutrition values.

The invention discloses an acetylacetonyl-based magnetic polymer microsphere and a preparation method thereof. The method includes: firstly copolymerizing acetoacetic acid ethylene glycol methacrylateand an acrylate monomer, adding a cross-linking agent, a photoinitiator, a micromolecular RAFT reagent and a cross-linking agent, taking a macromolecular reversible addition-fragmentation chain transfer agent as a stable dispersing agent, and conducting RAFT photodispersion polymerization to prepare a cross-linked polymer microsphere containing diacetylacetonyl internally; and then swelling the cross-linked polymer microsphere in an organic solvent, adsorbing metal ions by diacetylacetonyl in the microsphere, and carrying out in-situ oxidation reduction under the conditions of heating and catalyst action to obtain the polymer microsphere loaded with magnetism inside. The magnetic polymer microsphere provided by the invention has the characteristics of regular shape, uniform particle size,good monodispersity and stability, and after swelling and reduction in a solvent, can maintain unchanged particle size and particle size distribution, thus having has great application prospects.

The natural flavor mastic fat is generated through enzymolysis reaction of reaction substrates and lipase, the mass ratio of the reaction substrates to the lipase is 1: (0.05-0.2), the reaction substrates comprise butter or cream, a buffer solution and caprylic capric triglyceride, and the mass ratio of the caprylic capric triglyceride is 5-10%. A certain amount of caprylic / capric triglyceride (O.D.O) is added into the enzymolysis anhydrous butter, so that the contents of caprylic acid and capric acid of the final enzymolysis product frankincense fat can be changed, and the enzymolysis product oil smell and baking fragrance retention performance are more excellent. Moreover, proper amounts of short-chain and medium-and-long-chain fatty acids are obtained through proper enzymolysis, and ketones, aldehydes and lactones which do not exist in the raw materials are obtained at the same time, so that the aroma of the mastic fat is enhanced after enzymolysis. After enzymolysis, a part of triglyceride in the butter is still reserved, and meanwhile, high-carbon fatty acid is not generated, so that the milk flavor is more prominent.

A high-performance magnesium metal matrix composite material and a preparation method thereof belong to the technical field of magnesium alloy. The enhanced particles are prepared from intermediate alloy with an LPSO structure and have an initial size of 0.1-0.5 cm. Pure magnesium or magnesium alloy in the same size, as the base material, is mixed with the enhanced particles, and a certain processing method and heat treatment are employed to prepare an extrusion blank of enhanced particles mixed with the pure magnesium matrix. A weight proportion of the enhanced particles and the pure magnesium matrix in the alloy is regulated at 10-40%, so as to an obtain an LPSO structure reinforced magnesium metal matrix composite material with excellent mechanical properties. The composite material can be used in the preparation of various structural components to meet the needs of different aspects.

The invention discloses an inorganic high-temperature-resistant ceramic wear-resistant anticorrosive coating and a preparation method thereof. The coating is prepared from the following raw materials in parts by weight: 50-70 parts of inorganic silicon resin, 3-10 parts of titanium dioxide, 3-10 parts of mica iron red powder, 1-5 parts of tungsten powder, 5-15 parts of modified silicon carbide, 5-15 parts of phosphate and 2 parts of a wetting dispersant. According to the inorganic high-temperature-resistant ceramic wear-resistant anticorrosive coating disclosed by the invention, phosphate is added, and the content of each component is changed, so that the salt water resistance of the obtained coating is remarkably improved. In the preparation method of the inorganic high-temperature-resistant ceramic wear-resistant anticorrosive coating, a certain amount of phosphate is added into the modified silicon carbide, so that the salt water resistance of the coating is unexpected.