107results about How to "Beneficial" patented technology

A shock wave applicator includes a shock wave generator and an asymmetrical reflector portion in a housing. Asymmetry of the reflector portion is combined with one or more wave generators to produce a variety of focal volumes and wave fronts for medical treatment.

A cooking grate and a grill assembly having one or more of the cooking grates therein. The cooking grate can be a one-piece structure but is preferably a two-piece structure wherein the upper piece comprises longitudinally extending food support ribs having hollow interiors. The ribs will be positioned over and cover open areas in the lower structure so that combustion gases flowing through the open areas of the lower structure will flow into the hollow interiors of the food support ribs.

The invention discloses a porous carbon electrode material based on chitosan and a derivative of chitosan as well as a preparation method and application of the porous carbon electrode material. According to a hard template carbonization method, by taking a hollow silicon oxide ball as a template and taking chitosan and a derivative of chitosan as carbon source precursors, liquid-phase impregnation, high-temperature carbonization, template removing and the like are carried out so as to obtain the porous carbon electrode material suitable for a lithium ion battery and a supercapacitor. The prepared porous carbon electrode material simultaneously has the characteristics of a nitrogen-doped structure and a macroporous-mesoporous-microporous graded pore structure, wherein the nitrogen-doped content can be controlled by using different types of chitosans; the graded pore structure can be controlled by changing the size of the particle diameter and the wall thickness of each silicon oxide ball and regulating the mass of the chitosan solution. Compared with the commercialized graphite, the porous carbon electrode material prepared according to the method disclosed by the invention has the advantages that the specific capacity is obviously increased and the rate performance of the obtained porous carbon electrode material is maintained well. The porous carbon electrode material is simple in preparation process, has no strict requirement to equipment and is suitable for industrial production.

The invention discloses a sweet potato residue fermentation feed and a preparation method thereof,and relate to the field of preparing animal feed from plant materials. The fermentation feed is prepared by using 75-80% of sweet potato residue and 20-25% of wheat bran as a raw material and an auxiliary material, and adding a reagent based on the raw material; mixing 0.75-1.5% of urea, 0.75-1.5% of ammonium sulfate, 0.5-0.7% of mono potassium phosphate and 0.4-0.6% of magnesium sulfate to obtain a fermentation substrate; mixing bacillus subtilis, saccharomycopsis fibuligera, trichoderma viride and bacterium solution of lactobacillus plantarum to prepare a bacteria liquid of combined fermentation strains through aerobic fermentation. The weight ratio of the fermentation substrate to the bacteria liquid of the combined fermentation strains is 1:1-1.2; the volume ratio of four bacteria liquids is 1-3:1-3:1-3:1-3. The method can increase the amount of true protein of the fermentation substrate, reduce the amount of coarse fibers, improve the feed palatability and digestibility and utilization, and fully improve the nutritional value of sweet potato residue, thereby having both economic benefits and environmental benefits.

The invention provides a steel slag and cement stabilized base material comprising components of steel, cement, water, and an additive. The weight ratio of steel to cement to water is 100:4-6:4-6; and the weight of the additive is 0.6-6% of the weight of cement. According to the invention, graded steel slag serves as an aggregate, and is used for replacing crushed stones. The voids of the aggregate are filled by using a certain amount of a cementing material and the volume of enough mortar. The materials are paved and compacted according to an interlocking principle. The strength of the base is high. With increasing age periods, the base rapidly turns into a board body. Therefore, the material has high strength, high water permeability and high freezing resistance. The material can be used in road base constructions.

The invention discloses a method for building an ecological littoral zone in a buffer area. The method comprises building of gabions, a low pond, multiple ponds and a retention canal. The method comprises the following specific steps: (1) a gabion area is built, wherein the gabions are built between a normal water level of a river and a level of a flood occurring every two years, and emergent aquatic plants are planted in gaps between the gabions; (2) the low pond is built, wherein a low area which is 20cm lower than the gabion area and 20cm lower than foundations of the multiple ponds is built between the level of the flood occurring every two years and the level of a flood occurring every twenty years; (3) a multi-pond system is built, wherein two rows of pond systems are built in the low pond area, substrate improvement is conducted, submerged plants are closely planted in the ponds, and the emergent aquatic plants are planted on the foundations and the circumferences of the ponds; (4) the retention canal is built, wherein the retention canal is built along the outside of the level of the flood occurring every twenty years. The method effectively solves the ecological problems that a surface source of a gentle slope area of the river is severely polluted, landscapes are poor, the biodiversity is reduced and water and soil loss occurs, and offers a feasible and efficient ecological restoration measure for recovery and reconstruction of a hydro-fluctuation belt.

The invention discloses a nitrogen-doped porous carbon ball/manganic manganous oxide nanometer composite electrode material and a preparation method thereof. The preparation method comprises that chitosan and its derivative as carbon source and nitrogen source predecessors and porous silica as a hard template are carbonized, then silica is removed so that nitrogen-doped porous carbon balls are obtained, manganic manganous oxide nanometer particles grow on the nitrogen-doped porous carbon balls by a mild solvothermal method, and the nitrogen-doped porous carbon balls with the manganic manganous oxide nanometer particles are subjected to centrifugation washing and drying so that the nitrogen-doped porous carbon ball/manganic manganous oxide nanometer composite electrode material is obtained. The prepared material as a lithium ion battery negative electrode material has a high reversible specific capacity, good cycling stability and excellent multiplying power discharge performances. The preparation method can be operated easily, has mild preparation conditions and no harsh requirement on equipment and is suitable for industrial production. The nitrogen-doped porous carbon ball/manganic manganous oxide nanometer composite electrode material has a wide application prospect in the electrochemistry fields of high performance lithium ion batteries and super capacitors.

The invention relates to a water fluorocarbon paint for external-wall painting, comprising solvent (water), water fluorocarbon latex, filler, composite film-forming auxiliary agent, disperser, moistening agent, leveling agent, thickening agent and germicidal agent. In the paint, solvent (water) covers 5 to 15 percent, water fluorocarbon latex covers 40 to 70 percent, composite film-forming auxiliary agent covers 5 to 14 percent, rutile titanium pigment covers 10 to 25 percent, talc powder covers 5 to 10 percent, disperser covers 0.1 to 0.5 percent, moistening agent covers 0.001 to 0.003 percent, leveling agent covers 0.004 to 0.01 percent, thickening agent covers 1 to 1.8 percent, and antifoaming agent covers 0.01 to 0.05 percent. The invention provides an efficient novel water fluorocarbon paint for external-wall painting by changing fillers and increasing the dose of composite film-forming auxiliary agent. The preparation process is simple, the paint is free of dehiscence, spurging and whitening; the painted wall-surface is smooth, and the light and color are well reserved; the paint has sound flexibility, weathering resistance, corrosion resistance, heat/cold resistance, acid/alkali resistance and better film-forming performance; the paint is environment-friendly, low-cost and construction friendly; and the prospect of development is very bright.

The hair conditioning and brain nourishing liquid is compounded with glutinous rice straw 100-500 weight portions, rice plumule 100-500 weight portions, mineral water 1000-8000 weight portions, and edible fungus 1-10 weight portions; and into the material, gingko leaf, rose mallow leaf, prepared fleeceflower root and other Chinese medicinal materials may be also added. The hair conditioning and brain nourishing liquid contains amino acids, ferment, trace elements, minerals and active enzymes, which may be absorbed through hair, skin and hair follicle to nourish hair and brain, and can reach the health functions of warming channel to dredge meridian, promoting blood circulation to disperse blood clots, eliminating toxic matter, etc.

The invention discloses a composite board which comprises two skin layers, wherein an intermediate layer is formed between the two skin layers and an inner stiffening beam is arranged between the two skin layers, a core material is filled in the intermediate layer, an outer stiffening beam is arranged between the core material and at least one skin layer, and a polydicyclopentadiene layer is arranged outside the at least one skin layer. The invention also discloses a preparation method of the composite board. The invention further discloses a dumper compartment comprising the composite board. The dumper compartment has the characteristics of strong bearing capacity, remarkable weight reducing effect, oil consumption saving, carbon dioxide emission reducing, long service life and the like.

The invention relates to a wireless image transmission system of an unmanned patrol device above water, comprising a shore system and a shipborne system, wherein the shipborne system comprises a camera, a shockproof cloud platform, a video monitor, a signal coding modulator, a wave filter and amplification device, a shipborne wireless transmitting unit, a receiver and an antenna. A cloud platform and a lens controller are respectively connected with the camera and the shockproof cloud platform, the camera is respectively connected with the video monitor and the signal coding modulator, the signal coding modulator is connected with the wave filter and amplification device, the wave filter and amplification device is connected with the shipborne wireless transmitting unit, and the receiver and the antenna are connected with the shipborne wireless transmitting unit; the shore system comprises a shore center receiving unit, a signal amplifier, a communication monitor computer, a decoder, a communication monitor computer, a video server and an independent display terminal; and the shore center receiving unit is respectively connected with the signal amplifier and the communication monitor computer, the signal amplifier is connected with the decoder, the decoder is connected with the video server, and the video server is connected with the independent display terminal.

The present invention provides assay systems and methods for determining the percent fetal contribution of cell-free DNA in a maternal sample from a pregnant female with an egg donor pregnancy. Further provided, are assay systems and methods for determining a statistical likelihood of the presence or absence of a fetal aneuploidy in a maternal sample using a determined percent fetal cell-free DNA in the sample.

The invention relates to a biological enrichment method of gamma-aminobutyric acid (GABA) from rice bran, in particular to a method for enriching and producing gamma-aminobutyric acid (GABA) from rice bran by enzyme biotechnology, which belongs to the field of food biotechnology. The method comprises the following steps: selecting rice bran as the raw material, extracting GAD in rice bran by phosphate buffer solution to obtain crude enzyme liquid, preparing fixed GAD from the crude enzyme liquid by using biomaterial chitosan as carrier and glutaraldehyde as crosslinking agent, adding a substrate glutamic acid or sodium glutamate to prepare GABA reaction liquid, centrifuging to obtain supernate, adding ethanol into the supernate to remove polysaccharide impurity, ultra-filtering to obtain high-concentration gamma-aminobutyric acid solution, or further concentrating and drying to obtain powdery product. The biological enrichment of GABA in rice bran can be used for producing edible GABA, and the GABA can be used as additives for functional health food, thus greatly improving added value of rice bran and achieving higher economic and social benefits.

The present invention relates to an occluder (100), comprising a meshed occlusion body (I) provided with a cavity (103), and a proximal hub (2), as well as a locking member (10) and a stopping member (13) both of which are located in the cavity (103). The distal end of the locking member (10) is connected to the distal end of the occlusion body (1). The stopping member (13) is disposed at the proximal end of the locking member (10). The proximal occluder head (2) is provided with a locking hole (15) in communication with the cavity (103). The radial size of the stopping member (13) is slightly larger than the diameter of the locking hole (15). The radial size of the locking member (10) is smaller than the diameter of the locking hole (15), and at least one of the proximal occluder head (2) and the stopping member (13) is an elastic member. An occlusion device comprises the occluder (100), a hollow delivery mechanism (200) and a traction member (4). The distal end of the traction member (4) is detachably connected to the proximal end of the locking member (10) of the occluder (100) after extending through the distal end of the delivery mechanism (200). The occlusion device has a simple locking structure, and simplifies the manufacturing process and the locking operation.

The invention provides a tail gas recovery device based on a pressure balance control method. The device comprises a surge flask, a primary recover flask and a primary recovery compressor, wherein a micro differential pressure transducer is arranged on the surge flask; at least a gas inlet pipe is connected at a gas inlet of the surge flask; a gas outlet of the surge flask is connected with a gas inlet of the primary recovery compressor by a first high pressure pipe; an electromagnetic proportional valve is arranged on the first high pressure pipe; a gas outlet of the primary recovery compressor is connected with a gas inlet of the primary recover flask by a second high pressure pipe; a first electromagnetic valve is arranged on the second high pressure pipe. The device has a simple structure, is easy to operate and control, has small volume and light weight, completely eradicates the adverse effects of sulfur hexafluoride emitted in test processes and decomposition products of sulfur hexafluoride on environments and human bodies, achieves zero emission and recycling of sulfur hexafluoride, has economic, environmental and safety triple benefits and can be broadly applied to collection of toxic tail gases or environment polluting tail gases generated in a laboratory environment or after detection by industrial field instruments.

The invention provides a quarry muck spray-seeding medium and a spray-seeding method thereof. The spray-seeding medium comprises a medium layer and a seed layer, wherein the medium layer is located onthe bottom layer, and the seed layer is located on the upper layer of the medium layer. The medium layer is mainly prepared from, by mass, 50-60% of muck A, 5-10% of biochar, 10-15% of straw, 5-13% of cement, 1-3% of potassium sulphate, 1-2% of acrylamide and 10-15% of biogas slurry; the seed layer is mainly prepared from, by mass, 30-40% of muck B, 20-35% of sludge, 30-35% of biogas residues, 1-2% of starch grafted sodium polyacrylate, 1-2% of polyacrylamide and 1-2% of plant seeds. According to the spray-seeding medium, the quarry muck is used as the main raw material to replace soil used in an existing soil replacement spray-seeding technology, and the quarry muck spray-seeding medium has certain social, biological and economic values.

The present invention discloses fishing ground forecast method through adoption of multi-scale environment characteristics. The method comprises the following steps: 1) performing preprocessing of original marine environment remote sensing data of a target region; 2) constructing a multi-scale environment characteristic data set base on the pre-processing marine environment remote sensing data; 3) calculating the catch per unit effort (CPUE) according to the fishery production data, setting a threshold according to the CPUE, and generating fishing ground sample labels; 4) retrieving the marine environment remote sensing data approaching or satisfying the threshold in the multi-scale environment characteristic data set, and building a multiple temporal-spatial scales fishing ground marine environment characteristic sample set; and 5) performing fishing ground forecast according to the multiple temporal-spatial scales fishing ground marine environment characteristic sample set, and obtaining a fishing ground probability forecast result. The fishing ground forecast method through adoption of multi-scale environment characteristics builds an effective mapping form a multi-dimensional marine environment characteristic space to a marine fishing ground characteristic space so as to allow the mapping relation to more steadily and comprehensively reflect the marine fishing ground distribution rule and improve the fishing ground forecast accuracy.

The invention provides a preparation method of phycocyanin and belongs to the technical field of organisms. The preparation method comprises the following steps of: firstly, taking fresh algae or spirulina powder as a material; firstly, extracting coarse filtrate of phycocyanin, adding deionized water after dewatering the material; evenly mixing, and freezing at -20 DEG C to -10 DEG C; taking out and thawing at 35 DEG C after freezing; refreezing and thawing for 3-4 times, and filtering by a 120-mesh gauze; secondly, centrifugally separating to obtain supernate, carrying out ultra-filtration separation purification after carrying out dual aqueous phase extraction on the supernate; finally freezing and drying, wherein the concentration of the obtained phycocyanin can be up to over 4.0, and finally storing the phycocyanin at 3-5 DEG C. The method disclosed by the invention is simple and convenient, and high in purification efficiency when the cost is reduced, and has good application, social and economic benefits; and the purity is over 4.0.

The invention discloses a new method for synthesis of benzoxanthene derivatives by aqueous phase catalysis of ionic liquid. The catalyst is alkaline functionalized ionic liquid; the raw materials are alpha-naphthol, aromatic aldehyde, and 1,3-cyclohexanedione derivatives; water is used as a reaction medium; and the benzoxanthene derivatives are obtained by reaction under the action of the catalyst. Compared with the prior art, the invention has the following advantages that: (1) the alkaline functionalized ionic liquid is adopted, the raw materials are wide in sources, the preparation is convenient; the catalyst is high in activity, few in using amount, stable and not inactive when used in water; (2) the aqueous solution containing the ionic liquid catalyst can be recycled, and is environment friendly; (3) water is used instead of organic solvents, which has dual benefits of environment and economy, and the method is a high-efficient and environment-friendly method for synthesis of benzoxanthene derivatives, and facilitates large-scale industrial production.

The invention discloses 355MPa-grade low-alloy high-fatigue-strength steel and relates to the technical field of steel smelting. The thickness of a steel plate is 6-60 mm. The chemical ingredients ofthe 355MPa-grade low-alloy high-fatigue-strength steel comprise, by mass percentage, 0.12%-0.23% of C, 0.10%-0.60% of Si, 0.80%-1.90% of Mn, smaller than 0.018% of P, smaller than 0.008% of S, 0-0.060% of Nb, 0-0.15% of V, 0-0.12% of Ti and 0.010%-0.050% of Al. The adopted alloy ingredient design is to conduct controlled rolling and controlled cooling to obtain uniform and fine ferrite+pearlite structure, and then good mechanical performance and anti-fatigue performance are obtained.

The invention discloses a method for preparing phacellite by using coal ash as a raw material, which comprises the following steps: 1) drying the coal ash, and carrying out gradient magnetic separation of dry method; 2) mixing the magnetically-separated coal ash and potassium hydroxide according to a mass ratio of 1:0.1-0.3, adding the mixture into a crucible of a muffle furnace, heating the mixture, and baking the mixture at a constant temperature; 3) adding acid into a baked product of the coal ash according to a solid-liquid ratio of 1:1-5, dissolving the baked product in the acid for 1 to 2 hours, adding a chelating agent into the mixture according to a solid-liquid ratio of 1:0.1-0.5 during acid dissolution, and continually stirring the mixture; 4) after the acid dissolution is finished, filtering, washing and drying the filter residue to obtain a coal ash pretreatment sample; and 5) adding potassium hydroxide solution into the coal ash pretreatment sample according to a solid-liquid ratio of 1:2-5, adding the mixture into a stainless steel reaction kettle, heating the mixture to carry out hydrothermal reaction, and filtering, washing and drying a reaction product to obtain a phacellite product. The method overcomes the defects of the prior art such as high cost, uneven chemical components of the product and the like, achieves resource utilization of the solid waste coal ash, and has environmental and economic double benefits.

The invention provides a recycling process of coal gas waste gas, belonging to the field of heat exchange, and particularly relates to a recycling process of the coal gas waste heat gasified by a pressure moving bed. For an existing pressure moving bed, when being used for recycling the coal gas waste heat, the coal gas waste heat is recovered as low-pressure steam by a waste heat boiler and cannot be taken as raw material water steam, so that the gasification costs are increased. According tho the invention, the recycling process of coal gas waste heat consists of a high-pressure mass transfer and heat transfer device (34), a low-pressure mass transfer and heat transfer device (14), a heat exchanger (49), a power recycling device (31), a recycling hot water pressure pump (23), a pressure machine (16), pipelines and the like, the existing coal gas waste heat recycling process is optimized, the coal gas recycling process is adopted in a recycling process of the coal gas waste heat gasified by the pressure moving bed, so that external supply steam consumption steam can be reduced dramatically, the coal gas sewage amount and the coal gas waste water processing expenses can be decreased greatly, the output of high value-added byproducts such as tar and the like can be increased, and the gasification cost of the moving pressure bed are better lowered.

The invention discloses a tower top dust recovery device for a urea granulation tower. The tower top dust recovery device comprises a granulation tower body and a receiving disc arranged in the tower body, wherein a cylindrical dust recovery chamber is arranged on the top of the tower body; the diameter of the dust recovery chamber is greater that of a tower top vent hole; sprinklers are arranged at upper and lower ends of the dust recovery chamber, and a filling dust suction device formed by an inclined partition plate is arranged between the sprinklers at two ends; a feed pipe connected to the bottom end of the receiving disc is connected with a filter; a discharge hole of the filter is connected with a circulating pump by a material control valve, and an outlet of the circulating pump is connected with the sprinklers at upper and lower ends in the dust recovery chamber by a pipeline; a branch pipe which opens into an evaporator is connected between the filter and the material control valve; and a water replenishing branch pipe is arranged between the material control valve and the circulating pump. Due to the adoption of a tail gas filter washing absorption device for the urea granulation tower, environment is protected; and more importantly, effective value is recovered, the waste of resources is reduced, and the investment in the device can be recovered quickly.

The invention provides a reduction method of lead-rich slag, which belongs to the field of metallurgy and comprises the following steps: adding liquid-state lead-rich slag into a furnace from a slag inlet, adding slack coal or pulverized coke particles used as a reducer into the furnace from an upper port of the furnace, stirring the fusant by using nitrogen so that the reducer and the slag are completely mixed, blowing coal bed gas or natural gas by using a side blower to assist oxygen-rich air to increase the slag temperature to above 1100 DEG C, and simultaneously keeping the temperature ofthe fusant area at 1200-1250 DEG C by utilizing the reaction heat. The method does not use coke so as to effectively reduce the cost and the environmental pollution.

The invention provides a method for improving a recovery rate of gold in a semi-primary semi-oxidized gold ore by a full flotation process. The method comprises the following steps: (1) after a raw ore is subjected to grinding, performing rougher flotation by a first-stage flotation column to obtain primary concentrate and primary tailings, and performing cleaner flotation on the primary concentrate by the first-stage flotation column to obtain cleaner tailings and final gold concentrate; (2) performing scavenging flotation on the primary tailings by a first-stage flotation machine to obtain primary scavenging flotation concentrate and primary scavenging flotation tailings, performing scavenging flotation on the primary scavenging flotation concentrate by using a second-stage flotation machine to obtain secondary scavenging flotation concentrate and final tailings, and allowing the secondary scavenging flotation concentrate to return to the first-stage flotation machine for scavengingflotation; and (3) merging tailings having a concentrated gold-supported poor intergrowth body and the primary scavenging flotation concentrate, performing classification operation in a cyclone to obtain a settled sand product and an overflow product, performing grinding on the settled sand product, merging the ground settled sand product with the overflow product to return to a first-stage flotation column for rougher flotation. The method provided by the invention effectively solves the problem that a poor intergrowth body enters tailings in the production process, so that the recovery rateof the gold by flotation is low, and discards cyanide leaching operation in a current process, thereby eliminating environmental hazard of cyanides from a source.