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34results about How to "Increase sedimentation" patented technology

Acidic, protein-containing drinks with improved sensory and functional characteristics

InactiveUS20070014909A1Enhance sensoryImproved functional characteristicHydrolasesFood preparationOrganolepticPlant protein
Processes for producing acidic, protein-containing drinks are disclosed. Specifically, the processes comprise producing acidic, protein-containing drinks comprising plant protein material. The acidic, protein-containing drinks have improved sensory and functional characteristics such as reduced viscosity, improved sedimentation rate, and improved mouthfeel.
Owner:MAI JIMBIN +8

Method for precipitating rare earth from ionic rare earth ore magnesium sulfate leaching solution

The invention discloses a method for precipitating rare earth from ionic rare earth ore magnesium sulfate leaching solution. The method specifically comprises the following steps: (1) leaching ionic adsorption type rare earth raw ore to obtain leaching solution by using magnesium sulfate solution; (2) adding a magnesium-containing precipitator into the leaching solution obtained in the step (1), so that rare earth ions in the leaching solution are precipitated out to obtain a magnesium-containing rare earth precipitate; and (3) introducing carbon dioxide gas into the magnesium-containing rare earth precipitate, wherein the aim of introducing carbon dioxide refers to accelerating the reaction and removing magnesium in the precipitate, converting the magnesium in the precipitate into easily dissoluble magnesium bicarbonate to enter the solution, and converting the rare earth into a rare earth carbonate precipitate. According to the method for precipitating rare earth from ionic rare earth ore magnesium sulfate leaching solution, ammonium bicarbonate solution is not used as a precipitator, ammonia nitrogen pollution is avoided, and the rare earth precipitation capacity is high.
Owner:JIANGXI UNIV OF SCI & TECH

Feed for chickens

A feed for chickens takes yellow mealworms as a new resource of animal protein, takes lutein as a feed additive, and is formed by matching sweet corns, yellow mealworms, bean pulp, lutein, dibasic calcium phosphate, premix compound, salt, fine aggregate and wheat barn, wherein the metabolizable energy is 2850-2900 kcal / kg, the protein is more than or equal to 19.5%, Ca accounts for 0.9-1.2%, total phosphorus accounts for 0.6-0.8 %, methionine is more than or equal to 0.48%, and lysine is more than or equal to 1.15%. In the invention, compared with the feed taking the bean pulp as a main material, the immunity of poultry and the function of the immune system are improved, the immune cells are activated overall, the generation of the antibody is promoted, the occurrence rate of diseases is decreased, and the precipitation capacity of the lutein in the egg yolk is improved greatly, the mouthfeel of eggs, the laying rate and egg quality of the chickens are improved, the egg laying peak season is prolonged, the single egg weight is increased, the color of the egg shell is bright, the nutritional value is higher, the laying rate is improved by 4%, the mortality and elimination rate is reduced by 4.5%, the feed is saved by 14%, and the economic benefit is improved by 4.3%.
Owner:CHANGZHI TIANHE ANIMAL HUSBANDRY DEV

Swirling flow type screen filtering system and filtering method of swirling flow type screen filtering system

The invention discloses a swirling flow type screen filtering device which comprises a first water storage tank, a filtering screen, a waste collecting screen, a waste collecting pipe, a waste discharging pipe and a concentration bag. The filtering screen is located on the upper portion of the waste collecting screen, the two ends of the waste collecting pipe are communicated with the waste collecting screen and the waste discharging pipe respectively, the other end of the waste discharging pipe is communicated with the concentration bag, the filtering screen, the waste collecting screen, the waste collecting pipe and the waste discharging pipe are located inside the first water storage tank, the concentration bag is located outside the first water storage tank, an aerating device is arranged at the bottom of the waste collecting screen, and a first water outlet pipe is arranged on the lower portion of the first water storage tank. The invention further discloses a swirling flow type screen filtering system and a method of the swirling flow type screen filtering system for filtering waste water. The circulating water industrial aquaculture technology of the swirling flow type screen filtering device is not dependent on an imported and high-price drum micro-filtering machine any more, the shortcomings that an industrial aquaculture system is high in investment cost and energy dissipation, wastes water and the like are overcome, and the investment cost and the operation cost are reduced by more than 20% and 15% respectively.
Owner:常州日美水产科技有限公司

Well and water collection well

The invention discloses a well and a water collection well. The well comprises a bottom plate, a well chamber, a well cylinder adjustment block, a well ring and a well lid which are connected in sequence from bottom to top, wherein the lower parts of the bottom plate and the well chamber are integrally formed by pouring; and a water inlet is formed in a side wall of the well chamber. The water collection well comprises a sand sediment well and a water intake well which adopt the well, wherein a first water collection well chamber is connected between the sand sediment well and the water intake well; the sand sediment well is communicated with the first water collection well chamber through an upper water-passing hole; the first water collection well chamber is communicated with the water intake well through a lower water-passing hole and the water inlet of the water intake well; and vent holes are formed in the sand sediment well, the water intake well and the side walls at the upper part of the first water collection well chamber. The well and the water collection well are connected with a drainage pipeline of a drainage system, so that rainwater can be collected on a rainy day and urban water logging is avoided; and when the soil is droughty, the rainwater stored in the well can be pumped out for irrigating greenbelts to relieve the drought, so that wastes are turned into wealth and water resources are saved for cities.
Owner:日照市东兴城市配套设备有限公司

Respiratory syncytial virus resistance human immune globulin and preparation method thereof

The invention relates to respiratory syncytial virus resistance human immune globulin and a preparation method thereof. The titer of the respiratory syncytial virus neutralizing antibody is larger than or equal to 1:900. The preparation method includes the steps of firstly, screening out privilege plasma with titer of the respiratory syncytial virus neutralizing antibody not lower than 1:200; secondly, mixing screened-out efficient privilege plasma; thirdly, separating the mixed plasma through a low-temperature ethyl alcohol filter press method, purifying and separating out a immune globulin component II through the combination with the ion-exchange column chromatography method, and obtaining immune globulin with the purity of 98-100% through filtration, chromatography, ultrafiltration, preparation, low-pH incubation virus inactivation, nano-membrane filtration virus removal and subpackaging. The titer, purity and recycling rate of the respiratory syncytial virus resistance human immune globulin obtained through the preparation and production method are high, treatment can be conducted for the respiratory syncytial virus, and the respiratory syncytial virus resistance human immune globulin and the preparation method have advantages of being safe, effective and the like.
Owner:哈尔滨派斯菲科生物制药有限公司

Intravenously injected cytomegalovirus human immune globulin and preparation method thereof

The invention relates to intravenously injected cytomegalovirus human immune globulin and a preparation method thereof, and the titer of a cytomegalovirus neutralizing antibody of the human immune globulin is larger than or equal to 1:500. The preparation method comprises the steps that 1, positive plasma with the titer of the cytomegalovirus neutralizing antibody larger than or equal to 1:20 is screened out; 2, the screened-out efficient positive plasma is mixed; 3, the mixed plasma is separated through a low-temperature ethanol filter-pressing method, an immune globulin component II is separated and purified by combining an ion-exchange column chromatography method, viruses are removed through filtration, chromatography, ultrafiltration, preparation, low-pH incubation virus inactivation and nanofilm filtration, the immune globulin with the purity of 98.5%-100% is obtained through subpackaging, and the antibody titer is not lower than 1:500. The cytomegalovirus human immune globulin prepared through the preparation and production method is high in antibody titer, purity and recovery rate and capable of conducting targeted treatment on cytomegalovirus, is an effectively drug for treating recessive and dominant infection caused by the cytomegalovirus in people, is safe and reliable and has larger social benefits and economic benefits.
Owner:哈尔滨派斯菲科生物制药有限公司

Method for preparing soybean whey oligosaccharide through coupling of heating, flocculating, air floating and ultra-filtering

The invention relates to a method for extracting a soybean whey oligosaccharide from soybean whey. The method concretely includes the steps that heating, flocculating, air floating and intermittent flow-crossing ultra-filtering are coupled; a segmented treatment mode is adopted in a ground-breaking mode at a pretreatment stage, and ingeniously combined with air floating separation; composite flocculants with specific components and a specific proportion are selected. The high-quality soybean oligosaccharide product low in maillard browning reaction occurrence rate is provided, the extraction ratio of the soybean whey oligosaccharide can reach 85% and is much higher than that at a common level in the field, the effect that all steps and parameters supplement each other and act in a coordinated mode is achieved, the cost is lowered, and the method is high in operability.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

Polyphenol-containing Kefir fermented whey beverage and manufacturing method thereof

A polyphenol-containing Kefir fermented whey beverage belongs to the technical field of food processing. The polyphenol-containing Kefir fermented whey beverage is prepared from the following steps of 1) mixing and dissolving demineralized whey powder in water, and then filtering the mixture; 2) adding merchant concentrated juice into solution obtained in the step 1), adjusting the brix of the mixed liquid to 14 degrees Bx, performing homogenizing, keeping the homogenized liquid at 85 DEG C for 15 min for sterilization, then rapidly cooling down to 28-40 DEG C; 3) inoculating activated Kefir M into the mixed liquid obtained in the step 2) at a weight ratio of 2-8% of the mixed liquid, stirring to mixing the liquid and then fermenting the liquid at a constant temperature of 28-40 DEG C for 5-17 hours, and performing aseptic filling to obtain finished products. The polyphenol-containing Kefir fermented whey beverage is high in content of polyphenol and contains live probiotics without other food additives, and meanwhile, is fresh in taste and rich in nutrition.
Owner:ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Mixed flocculent precipitating system of mechanical stirring sedimentation basin

The invention relates to a mixed flocculent precipitating system of a mechanical stirring sedimentation basin. The mixed flocculent precipitating system comprises an inflow chute, a dosing pipe, a service reservoir, and a mechanical stirring sedimentation basin. The mixed flocculent precipitating system is characterized in that mixed flocculent devices are arranged on inflow pipelines of the dosing pipe and the mechanical stirring sedimentation basin, and each of the mixed flocculent devices is composed of a shell body, an upper cover arranged at the upper part of the shell body, a left connecting pipe and a right connecting pipe which are arranged at both ends of the shell body, and several groups of spiral pipes arranged in the shell body; every group of spiral pipes is formed by two spiral pipes coiled together, and both ends of every group of spiral pipe are provided with spiral pipe joints; the joint of both ends of the shell body and the left connecting pipe and the right connecting pipe are respectively provided with spiral pipe fixing plates, and connecting holes matched with the spiral pipe joints are arranged on two spiral pipe fixing plates; the spiral pipe joint of every group of spiral pipes is in flange connection with connecting holes on the spiral pipe fixing plates at both ends. The mixed flocculent precipitating system of the mechanical stirring sedimentation basin has the advantages of effectively improving the mixing effect of medicament and reducing the backflow sludge quantity of the sedimentation basin.
Owner:ANSTEEL GRP MINING CO LTD

Method for inducing precipitation of calcium carbonate by using microorganisms

The invention provides a method for inducing precipitation of calcium carbonate by using microorganisms. The method comprises the following steps: mixing a bacterial suspension with a calcium reactionsolution to obtain a total gel solution, and adding sodium montmorillonite into the gel solution to carry out calcium carbonate precipitation, wherein the sodium montmorillonite accounts for 0.25-1%of the total gel solution by mass. According to the method, the sodium montmorillonite is added, and under the condition of interaction of the sodium montmorillonite, the reaction solution and urea, precipitation of calcium ions is accelerated, and the calcium ions can achieve the effect of complete precipitation, so that the reaction efficiency is obviously improved, and the method has a higher practical application value; and under the condition of more reaction solutions, the reaction can be carried out in the forward direction, the calcium ions are completely precipitated, and the precipitation amount of calcium carbonate in the reaction is obviously increased.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)

Moisture Displacement and Simultaneous Migration of Surface-Functionalized Algae from Water to an Extraction Solvent Using Ionic Polyelectrolytes

This invention is in the field of micro-organism and algal cell processing. The invention relates to a method of maximizing migration of micro-organism and / or algal cells to a solvent fraction while simultaneously displacing water in a separate fraction and subsequent extraction of hydrophobic products from the organisms. The invention further relates to a method of sequestration of protein from an aqueous phase to an organic solvent.
Owner:TEXAS A&M UNIVERSITY

Magnetic precipitation filtering device for electric-spark linear cutting machine tool working fluid

The invention discloses a magnetic precipitation filtering device for an electric-spark linear cutting machine tool working fluid. The magnetic precipitation filtering device comprises two or more settling boxes, and the magnetic precipitation filtering device is characterized in that all the settling boxes are longitudinally arranged in an overlapped manner, two or more longitudinal baffle plates are fixedly arranged in each settling box, bent flow channels are formed, two or more horizontal sliding grooves are formed in the outer side of the bottom of each settling box at intervals, a permanent magnet is arranged in each horizontal sliding groove, and the tail end of the flow channel of each settling box is provided with an overflowing hole. The magnetic precipitation filtering device for the electric-spark linear cutting machine tool working fluid has the advantages that the electric-corrosion particle separating effect is good, cleaning is easy to achieve, and other effective components are not affected, and therefore performance of the working fluid is guaranteed for a long period.
Owner:自贡市嘉特数控机械制造有限公司

Collagen purification method

The invention provides a collagen purification method, and relates to the technical field of protein processing. According to the method, components such as insoluble substances and non-acid-soluble proteins in the solution are precipitated by adopting a manner of combining the diatomite and the biological flocculant, and then are removed by plate and frame filtration, so that the operation is simple, the subsequent ultrafiltration time can be saved, and the yield and purity of the collagen are improved; in the salting-out process, a mixture of ammonium chloride with the mass fraction of 15-25% and ammonium sulfate with the mass fraction of 30-40% is used, and the volume ratio of the ammonium chloride to the ammonium sulfate is controlled to be (5-10): 1, so that the precipitation amount of the collagen can be obviously increased, and the yield of the collagen is further increased; and finally, the mixed solution is desalted in a manner of combining an ultrafiltration membrane with a tubular ultrafiltration membrane, so that all salts in the salting-out process can be removed, the purity of the obtained collagen is ensured, and the condition that the stability is reduced due to the fact that the collagen contains the salts is avoided.
Owner:浙江崇山生物制品有限公司

A kind of preparation method of high biological activity mxene/biological glass microsphere composite material

The invention discloses a preparation method of a highly bioactive MXene / biological glass microsphere composite material. MXene was prepared by in situ synthetic hydrofluoric acid etching method, followed by sol-gel method combined with template method to prepare bioglass microspheres, and finally MXene / bioglass microsphere composites were prepared by electrostatic self-assembly method. Since the surface of MXene has special surface groups, including polar groups such as hydroxyl (‑OH), oxygen (‑O) or fluorine (‑F), these groups can be used as active sites after compounding with bioglass, which can Promote the increase of hydroxyapatite precipitation, and MXene has a high surface charge (negative Zeta potential exceeding ‑40 mV), which can absorb Ca and P plasma in body fluid faster and accelerate the formation of hydroxyapatite precipitation, so MXene / Bioglass microsphere composite material has high biological activity.
Owner:FUZHOU UNIV

Rockfill dam structure

The invention relates to dams at the foot of the hill, in particular to a rockfill dam structure. The rockfill dam structure comprises a dam body and a water channel body. A water drainage pipeline is arranged at the bottom of the dam body and extends to the water channel body all the time. The water channel body is provided with flood discharge ports located in the different horizontal planes. Rotating cover plates arranged at intervals are arranged at an upstream water inlet and a downstream water outlet of the drainage pipeline. A grid-shaped trench is arranged on the dam protection slope surface of the dam body. The rockfill dam structure is provided. The drainage pipeline in the structure is arranged at the rear portion of the dam body, in terms of environmental protection, the staying time of water in the dam body is prolonged, and the precipitation capacity of soil is increased. The impact force to the dam body from water is greatly reduced, and the dam body is protected accordingly. The water channel body is provided with the flood discharge ports, and when the rainfall is large, water in the dam body can be drained in time.
Owner:李星明

A kind of method utilizing microorganism to induce calcium carbonate precipitation

The invention provides a method for using microorganisms to induce precipitation of calcium carbonate. The method is to mix the bacterial suspension with the calcium reaction solution to obtain the total gel solution, and add sodium montmorillonite to the gel solution to precipitate calcium carbonate; the mass percentage of the sodium montmorillonite in the total gel solution is 0.25%. ~1%. The present invention accelerates the precipitation of calcium ions through the addition of sodium montmorillonite, under the condition of interaction between sodium montmorillonite, reaction solution and urea, and enables calcium ions to achieve complete precipitation, which significantly improves the The efficiency of the reaction has greater practical application value; and under the condition of more reaction liquid, the reaction can be carried out forward, the calcium ions can be completely precipitated, and the precipitation amount of calcium carbonate in the reaction can be obviously increased.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)

Moisture displacement and simultaneous migration of surface-functionalized algae from water to an extraction solvent using ionic polyelectrolytes

This invention is in the field of micro-organism and algal cell processing. The invention relates to a method of maximizing migration of micro-organism and / or algal cells to a solvent fraction while simultaneously displacing water in a separate fraction and subsequent extraction of hydrophobic products from the organisms. The invention further relates to a method of sequestration of protein from an aqueous phase to an organic solvent.
Owner:TEXAS A&M UNIVERSITY

A kind of intravenous giant cell human immunoglobulin and its preparation method

The invention relates to intravenously injected cytomegalovirus human immune globulin and a preparation method thereof, and the titer of a cytomegalovirus neutralizing antibody of the human immune globulin is larger than or equal to 1:500. The preparation method comprises the steps that 1, positive plasma with the titer of the cytomegalovirus neutralizing antibody larger than or equal to 1:20 is screened out; 2, the screened-out efficient positive plasma is mixed; 3, the mixed plasma is separated through a low-temperature ethanol filter-pressing method, an immune globulin component II is separated and purified by combining an ion-exchange column chromatography method, viruses are removed through filtration, chromatography, ultrafiltration, preparation, low-pH incubation virus inactivation and nanofilm filtration, the immune globulin with the purity of 98.5%-100% is obtained through subpackaging, and the antibody titer is not lower than 1:500. The cytomegalovirus human immune globulin prepared through the preparation and production method is high in antibody titer, purity and recovery rate and capable of conducting targeted treatment on cytomegalovirus, is an effectively drug for treating recessive and dominant infection caused by the cytomegalovirus in people, is safe and reliable and has larger social benefits and economic benefits.
Owner:哈尔滨派斯菲科生物制药有限公司

High-rate anaerobic pool bioreactor

The present application relates to a high-rate anaerobic pool bioreactor (“BLAAT”) as an improved processing unit for treating biodegradable wastewater, which allows the conversion of a low-performance rate traditional system, such as the anaerobic pool, into an efficient, compact system that enables clean energy to be recovered in the from of biogas. The application also describes a process for the anaerobic treatment of wastewater that uses said bioreactor, which optimizes the processes of mixing and contact between the biomass and the substrate and presents a novel process for separating out the biomass by means of improved sedimentation in horizontal laminar flow.
Owner:UNIV DEL VALLE

A method for collagen purification

The invention provides a collagen purification method and relates to the technical field of protein processing. The present invention adopts diatomite + biological flocculant to precipitate components such as insolubles and non-acid-soluble proteins in the solution, and then removes them by plate and frame filtration, which is not only easy to operate, but also can save subsequent ultrafiltration time and improve The yield and the purity of collagen protein; use mass fraction in the salting-out process and be the mixture of the ammonium chloride of 15-25% and the ammonium sulfate of 30-40% in mass fraction, and control the volume ratio of the two to be 5-10: 1. It can significantly increase the amount of collagen precipitation, thereby increasing the yield of collagen; finally, the mixed solution is desalted by using ultrafiltration membrane combined with tubular ultrafiltration membrane, which can remove all the salt in the salting out process , to ensure the purity of the obtained collagen, thereby avoiding the decrease in stability caused by the salt contained in the collagen.
Owner:浙江崇山生物制品有限公司

Method for continuously precipitating plutonium oxalate

PendingCN114420335ARealize continuous precipitationIncrease productionRadioactive decontaminationOXALIC ACID DIHYDRATEPlutonium nitrate
The invention relates to a plutonium oxalate continuous precipitation method which comprises the following steps: adding a combined reagent into a plutonium oxalate precipitation reactor and stirring to enable the combined reagent to form a flow field; then continuously adding the plutonium nitrate (IV) feed liquid and the oxalic acid feed liquid into a plutonium oxalate precipitation reactor for continuous precipitation reaction; the reaction conditions of the continuous precipitation reaction are as follows: the ratio of the flow of the plutonium (IV) nitrate feed liquid to the flow of the oxalic acid feed liquid is (1-1.5): 1, the reaction temperature is 40-58 DEG C, and the reaction time is 10-50 minutes. By adopting the method disclosed by the invention for continuous precipitation of the plutonium oxalate, the production quantity of the plutonium oxalate in unit time can be increased, the precipitation quantity of large plutonium oxalate particles can be increased, and the phenomena of wall sticking and caking of the plutonium oxalate precipitation particles on the inner wall of a plutonium oxalate precipitation reactor can be reduced.
Owner:CHINA INSTITUTE OF ATOMIC ENERGY

Slagging agent and method for prolonging the service life of electric silicothermal vanadium iron electric furnace lining

ActiveCN104611562BReduce chemical attackExtend your lifeElectricitySmelting process
The invention discloses a slag former and a method for prolonging service life of a furnace lining of a ferrovanadium electric furnace in an electro-silicothermic process. The slag former is heavy calcium oxide and magnesium-enriched light calcium oxide; according to the slag former and the method, the magnesium-enriched light calcium oxide is used for increasing content of magnesium oxide in furnace materials and original furnace slags; by improving components and physicochemical indexes of calcium oxide of the slag former added in a ferrovanadium melting process, chemical erosion and physical erosion of furnace slags and the furnace materials on the furnace lining in the ferrovanadium melting process are controlled and improved, so that loss of the furnace lining of the electric furnace in the ferrovanadium melting process can be radically controlled, and the aim of prolonging the service life of the furnace lining of the ferrovanadium electric furnace is fulfilled; together with the fettling technology, the service life of the furnace lining of the ferrovanadium electric furnace can be effectively prolonged. After the slag former and the method are adopted, the service life of the furnace lining of the 50 ferrovanadium electric furnace in the industry can be prolonged by more than one time, normally more than 200 furnaces can be used; moreover, the melting time and melting indexes in all stages can completely meet the production requirement.
Owner:HEBEI IRON AND STEEL

Fish excrement collecting and discharging system

The invention provides a fish excrement collecting and discharging system, which comprises an aquatic product culture pond body, a feeding device, an ultraviolet disinfection device, a rotary pollution discharger and a residue excrement collector, a filter, a dirt collecting tank, and a control device; the ultraviolet disinfection device, the rotary pollution discharger and the residue excrement collector are arranged in the middle of the bottom part of the aquatic product culture pond body and orderly connected through a pipeline; the control device is connected with the feeding device, the ultraviolet disinfection device, the rotary pollution discharger and the residue excrement collector; the control device is used for acquiring feeding amount of the feeding device and sediment amount after passing through the filter and comparing the feeding amount with the sediment amount, and controlling the feeding device, the ultraviolet disinfection device, the rotary pollution discharger andthe residue excrement collector according to the comparison result of the feeding amount and the sediment amount. The system can gradually optimize the collection and discharge of the fish excrement and form a whole set of circulating system, namely, save and use water resource while guarantee the growth environment of the aquatic product.
Owner:SUZHOU MUNICIPAL SHENHANG ECO TECH DEV CO LTD

Water treatment method for supplementary water of cooling water of air conditioner

The invention discloses a water treatment method for make-up water of cooling water of an air conditioner, which comprises the following steps: S1, introducing water to be treated into a comprehensive regulating tank, carrying out water quality equalization, and then carrying out filtering treatment to obtain first effluent water; s2, performing cation exchange treatment and anion exchange treatment on the first effluent to obtain second effluent; s3, a disinfectant is put into the second effluent, and third effluent is obtained after treatment; and S4, carrying out adsorption treatment on the third outlet water by taking modified zeolite as an adsorbent, then conveying the third outlet water to a water supplementing water tank, and supplying water to an air conditioner cooling tower by the water supplementing water tank. By adopting the method, the water replenishing quality can be ensured, and the problems of corrosion and scaling can be reduced.
Owner:佛山市雅洁源科技股份有限公司

A rockfill dam structure

The invention relates to dams at the foot of the hill, in particular to a rockfill dam structure. The rockfill dam structure comprises a dam body and a water channel body. A water drainage pipeline is arranged at the bottom of the dam body and extends to the water channel body all the time. The water channel body is provided with flood discharge ports located in the different horizontal planes. Rotating cover plates arranged at intervals are arranged at an upstream water inlet and a downstream water outlet of the drainage pipeline. A grid-shaped trench is arranged on the dam protection slope surface of the dam body. The rockfill dam structure is provided. The drainage pipeline in the structure is arranged at the rear portion of the dam body, in terms of environmental protection, the staying time of water in the dam body is prolonged, and the precipitation capacity of soil is increased. The impact force to the dam body from water is greatly reduced, and the dam body is protected accordingly. The water channel body is provided with the flood discharge ports, and when the rainfall is large, water in the dam body can be drained in time.
Owner:李星明

Preparation method of mellea armillaria sporophore antioxidant peptide

According to the preparation method of the mellea armillaria sporophore antioxidant peptide, mellea armillaria sporophore is used as a raw material to be sequentially subjected to protein extraction, precipitation, hydrolysis, separation and purification, the protein extraction comprises the steps that alkali extraction is adopted firstly, then residues obtained after alkali extraction are subjected to ultrasonic alkali extraction, the precipitation comprises the steps that an isoelectric point method and a salting-out method are sequentially carried out for precipitation, and finally drying is carried out to prepare mellea armillaria sporophore protein powder. According to the preparation method disclosed by the invention, through a protein extraction mode of firstly carrying out alkali extraction on the mellea armillaria sporophore and then carrying out ultrasonic alkali extraction, the extraction rate of mellea armillaria sporophore protein is effectively improved and reaches 76.59%, an isoelectric point method and a salting-out method are sequentially combined in a precipitation process, the precipitation amount of the mellea armillaria sporophore protein is effectively promoted to reach 66.2 ug / mL, and the DPPH free radical scavenging rate of the prepared antioxidant polypeptide reaches 86.37%. The scavenging rate of hydroxyl free radicals reaches 97.53% and is close to the scavenging rate of positive control. And the total reducing force is equivalent and reaches 0.71.
Owner:JILIN AGRICULTURAL UNIV
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