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Prepn and application of nickel-based catalyst for decomposing ammonia to prepare mixed H2-N2 gas
InactiveCN1506299AThe method works wellDispersed particle separationHydrogen productionRare-earth elementActive component
The catalyst includes Ni as main active component; carrier SiO2 or Al2O3; and one or several selected from IA, IIA, IIIB, VIII or RE element Li, K, Mg, Y, Fe, Co and La as assistant. The preparation process includes soaking the carrier with solution containing Ni and assistant; and drying and roasting the soaked carrier. At the temperature of 650 deg.c and ammonia feeding space velocity of 12000 / hr, the residual ammonia in the tail gas may be controlled below 400 ppm. Compared with available Ni-base catalyst, the present invention has ammonia discomposing temperature lowered by 150 deg.c, catalyst loading amount lowered to 1 / 20, greatly reduced apparatus volume, obviously reduced residual ammonia amount in tail gas, 1 / 3 to 1 / 2 lowered power consumption, and obviously lowered apparatus cost and production cost.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Preparation method of cherokee rose polysaccharide derivatives with antitumor activity
The invention discloses a preparation method of cherokee rose polysaccharide derivatives with an antitumor activity. The preparation method comprises the following steps: firstly smashing cherokee rose fruit, degreasing, removing oligosaccharide, lixiviating with hot water twice, then mixing extracts, filtrating, concentrating, precipitating and drying so as to obtain crude cherokee rose polysaccharide; adding diethylin ethyl amino ethyl (DEAE)-cellulose 52 to carry out static absorption for 30 minutes; washing with distilled water, filtering, and collecting filtrate so as to obtain the decolored crude cherokee rose polysaccharide; carrying out protein removal on a crude polysaccharide solution by using an enzyme method and a Sevag method; further separating the crude cherokee rose polysaccharide with the DEAE-cellulose 52, collecting, dialyzing, and freeze-drying so as to obtain cherokee rose polysaccharide; and finally, carrying out sulphating, carboxymethylation and hydrochloric acid degradation on the cherokee rose polysaccharide, and carrying out carboxymethylation on degradation products so as to obtain a plurality of cherokee rose polysaccharide derivatives. The plurality of cherokee rose polysaccharide derivatives have in vitro antitumor characteristics, and can be used for inhibiting the growth of three tumor cells, namely, ovarian cancer cells, liver cancer cells and rectal cancer cells.
Owner:SOUTH CHINA UNIV OF TECH
Color migration method of color images
ActiveCN105761202AThe method works wellProcessing speedImage enhancementImage analysisColor imagePattern recognition
The invention discloses a color migration method of color images. The color migration method is used to adjust the tone of a present color image by taking a specific color image as reference, and the tone of a processed output image is similar to that of the reference image. The color migration method comprises the steps of establishment an intermediate image, meshing and color migration. The method can be used to realize color migration between color images automatically and more effectively without manual intervention, especially a better color migration effect can be obtained under the condition that the tone of the image to be processed is greatly different from that of the reference image.
Owner:WUHAN UNIV
Method for reducing surface viscosity of bionic glue by using curing agents
InactiveCN102070961AReduce viscosityImprove waterproof performanceEster polymer adhesivesCoatingsMolecular sieveNatural product
The invention discloses a method for eliminating or reducing surface viscosity of bionic glue by using curing agents. The method comprises the following steps: spraying the curing agents on the surface of a plant which is sprayed with the bionic glue before the plant is harvested so as to eliminate or reduce the viscosity of the bionic glue; and then, carrying out other farming operations or harvests. The invention also discloses a corresponding liquid curing agent and a corresponding solid curing agent, wherein the liquid curing agent comprises the following components: 10-50% of poval, 0.05-0.1% of surfactant and the balance of water; and the solid curing agent is inert powder such as diatomite, zeolite powder, kaolin, attapulgite clay, molecular sieve or the like. The method disclosed by the invention has a good effect, and can obviously reduce the viscosity of the bionic glue; moreover, the curing agents disclosed by the invention are degradable materials or natural products, and are harmless to plants, animals and environment; and the liquid curing agent disclosed by the invention has a good waterproof property, and rainfall does not obviously influence the effect on reduction of the viscosity of the bionic glue.
Owner:INST OF MEDICINAL PLANT DEV CHINESE ACADEMY OF MEDICAL SCI +1
Evaluation method for pantograph-catenary matching performance of spectral cross-correlation coefficient
InactiveCN103020430AThe method works wellOvercoming the difficulty of proving the cause of pantograph-catenary matchingSpecial data processing applicationsData reliabilityModelling methods
The invention discloses an evaluation method for the pantograph-catenary matching performance of a spectral cross-correlation coefficient, which is an evaluation method for the pantograph-catenary matching performance of a Pearson cross-correlation coefficient of a dynamic uplifting amount continuous spectrum of a contact net and a pantograph and aims to solve the lectotype problem of the high-speed railway contact net and pantograph. According to the method, the dynamic uplifting amount data of the pantograph-catenary operation is subjected to pre-processing to remove abnormal data so as to ensure data reliability; an auto-regression model method is adopted to construct the dynamic uplifting amount continuous spectrum of the contact net and the pantograph, and the uplifting spectrum is utilized to compare and analyze the causes resulting in pantograph-catenary matching performance difference; and the Pearson cross-correlation coefficient of the pantograph-catenary uplifting spectrum is calculated, and the indicators of the advantages and disadvantages of the pantograph-catenary matching performance are quantified so as to finally judge the advantages and disadvantages of the pantograph-catenary matching performance. Based on analysis, the method can visually compare the differences between different pantograph-catenary matching performance, finds out band frequency range resulting in bad matching performance, and quantitatively compares the pantograph-catenary matching performance. Therefore, the method provided by the invention is a new evaluation method for the high-speed railway pantograph-catenary lectotype.
Owner:SOUTHWEST JIAOTONG UNIV
Oil field wastewater treatment method
ActiveCN102249435ASolve the emission problemAvoid harmMultistage water/sewage treatmentFiltration membraneAfter treatment
The invention discloses an oil field wastewater treatment method. according to the method, after being subjected to air flotation, oilfield wastewater flows into a carbon tube micro-filtration membrane separation system; oil and suspended solids in the wastewater are adsorbed and intercepted by a carbon tube membrane during the running of the system, the system performs backwashing after running for a period of time so that the adsorbed and intercepted oil and suspended solids are discharged together with backwashing liquid; and the dialysis fluid subjected to membrane treatmend is used as produced water after treatment and rejected into the oil recovery stratum. By the method, the damage of suspended solids, oil and other substances in the re-injection water to the stratum is reduced.
Owner:SANDA FILM SCI & TECH XIAMEN
Core confirming method for development degree of reservoir cracks
ActiveCN107064454ASure objectiveThe method works wellEarth material testingComputer sciencePerformed Imaging
The invention relates to a core confirming method for the development degree of reservoir cracks. The method comprises the following steps: 1) jointing cores; 2) summarizing and recognizing the characteristics of natural cracks; 3) performing imaging logging calibration; 4) finally confirming the natural cracks; and 5) judging the development degree of the cracks. The invention is specific to the reservoir cracks; the natural cracks are confirmed according to two data of the core and imaging logging, so that the confirmation of the natural cracks is more objective; furthermore, the splicing resetting is performed on the core fragments according to the invention, so that the quantity statistics of the natural cracks of the core can more objectively reflect the quantity of practical reservoir cracks, especially, the reservoir with abnormal development of the cracks and serious core segment; the method has a better effect; besides, the development degree of reservoir cracks confirmed according to the invention can avoid the common industrial misunderstanding that a same crack is mistakenly recorded as multiple cracks under the influence of mutual cutting of the cracks.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Bayesian network high-voltage switch cabinet health system evaluation method based on multi-scale permutation entropy
PendingCN113379252ASatisfy real-timeImprove generalization abilityResourcesInformation technology support systemAlgorithmBayesian network
The invention discloses a Bayesian network high-voltage switch cabinet health system evaluation method based on multi-scale permutation entropy. The method comprises the steps: firstly, analyzing and fusing information of multiple physical sensors of a high-voltage switch cabinet; secondly, introducing coarse graining operation and a permutation entropy method to realize effective extraction of the feature information; and finally, constructing and training a Bayesian network model based on expert domain knowledge to realize health state evaluation of the high-voltage switch cabinet system. According to the method, data sampled by different detection means can be fused, so that accurate evaluation of the safety state of the high-voltage switch cabinet is realized, and safe and stable operation of the electric power high-voltage switch cabinet is guaranteed.
Owner:ZHEJIANG UNIV OF TECH
Laser frequency stabilization device based on delay differential feedforward and method thereof
InactiveCN113078548AThe method works wellGood effectLaser detailsElectromagnetic transmittersIntermediate frequencyControl signal
The invention provides a laser frequency stabilization device based on delay differential feed-forward, and the device comprises: an optical signal generation unit which comprises an optical coupler which is used for dividing an optical carrier wave into two light beams; a delay difference unit which is used for carrying out delay and frequency shift processing on the first light beam and outputting an intermediate frequency signal through photoelectric conversion; a phase lock control unit which is used for performing phase discrimination, filtering and gain processing on the intermediate frequency signal to obtain an error control signal; an optical signal generation unit which further comprises an adjustable optical delay line which is used for carrying out delay processing on the second light beam so as to enable the delay of the second light beam to be matched with the path delay experienced by converting the first light beam into the error control signal, and a delayed optical wave signal is obtained; a voltage-controlled microwave source which is used for generating a driving signal under the excitation of the error control signal; and a light modulator which is used for performing frequency shift processing on the delayed light wave signal under the modulation of the driving signal to obtain a target light signal. The invention further provides a laser frequency stabilization method based on delay differential feedforward.
Owner:AEROSPACE INFORMATION RES INST CAS
Method for producing large-specific-gravity aviation kerosene through coal tar
ActiveCN106147854AReduce pollutionThe method works wellTreatment with hydrotreatment processesAviationKerosene
The invention relates to the field of coal tar processing and discloses a method for producing large-specific-gravity aviation kerosene through coal tar. The method comprises the steps that the coal tar raw material is distilled to be divided into a coal tar gasoline fraction, a coal tar diesel oil fraction and a coal tar heavy fraction; secondly, the coal tar gasoline fraction, the coal tar diesel oil fraction and hydrogen enter a hydrogenation protective reaction zone, and reaction conditions are controlled to enable the saturation factors of bicycle-arene and arene with more than two rings in reaction effluent to be 30-60 wt%; thirdly, the reaction effluent obtained in the second step enters a hydrofining reaction zone to react, and hydrofining reaction effluent is obtained; fourthly, the hydrofining reaction effluent is sequentially subjected to separation and fractionation. The large-specific-gravity aviation kerosene produced through the method is good in quality and high in yield. The method is simple, the raw material is easy to get, and the requirement for the raw material is not harsh.
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for processing brewing exocarpium piece
InactiveCN106619940AIncrease contentHigh dissolution rateAntinoxious agentsRespiratory disorderMicrowaveBitter taste
The invention belongs to the technical field of traditional Chinese medicine decoction piece processing, and particularly relates to a method for processing brewing exocarpium pieces. The method comprise the following steps: cleaning, performing ultraviolet radiation, performing quick-freezing and unfreezing, performing microwave drying, performing moistening and shaping, slicing, drying, packaging and performing preservation. According to the method for processing the brewing exocarpium pieces, due to ultraviolet radiation, effective components of the exocarpium pieces, such as flavonoids, can be increased; due to the modes of quick-freezing and unfreezing, loss of effective components can be reduced, cracking of cell walls of fresh exocarpium can be promoted, the dissolution degrees of the effective components in water can be increased, the microwave drying speed is rapid, a good thermal effect can be achieved, the activity of enzyme can be reduced, and the exocarpium pieces can be kept bright in color. The bitter taste of exocarpium can be removed, a product can be bright in color, uniform in size and good in reconstitution property, and problems that the exocarpium pieces are molded, deoiled, damaged by worms and the like when being preserved for a long time can be also solved. The product is green and pollution-free in the processing course, and market requirements can be effectively met.
Owner:广西陆川县橘旺农业开发有限公司
Scale inhibition control method adopted in circulating water operation process
InactiveCN105461084AAccurate judgment of fouling tendencyThe method works wellWater treatment parameter controlScale removal and water softeningAlkalinityPhenolphthalein
The invention discloses a scale inhibition control method adopted in a circulating water operation process. According to the method, five groups of circulating water scaling judgment formulae are proposed, and compared with the prior art, the circulating water scaling tendency can be judged more accurately and the effect is better when the method is implemented by a circulating water system adopting urban recycled water and various kinds of waste water as circulating water supplement water; according to the method, phenolphthalein alkalinity and conductivity of the circulating water are further taken as circulating water control indexes, the defects of the prior art are overcome, and the circulating water is prevented from scaling more accurately and more effectively; circulating water limiting concentration ratio, circulating water limiting hardness, circulating water limiting calcium ions, circulating water limiting phenolphthalein alkalinity, circulating water limiting methyl orange alkalinity, circulating water limiting pH value and circulating water limiting conductivity acquired through tests are taken as upper limit of in-site actual circulating water control indexes, errors caused by single chloridion control are eliminated, safe operation of the circulating water system is realized, and the problem of standard exceeding of the concentration ratio or scaling is solved.
Owner:STATE GRID HEBEI ENERGY TECH SERVICE CO LTD
Method for processing graphene plate
ActiveCN113334171AStable adsorption and fixed workAvoid position shiftGrinding carriagesDispersed particle filtrationGraphiteGraphene
The invention relates to the technical field of graphene plate processing, and specifically relates to a method for processing a graphene plate. In the method for processing the graphene plate, an outer shell of a device, rubber suction discs, a clamping plate, a rubber air bag, a grinding disc and a ventilator are comprised, a first servo motor is welded and fixed to the outer shell of the device, and an output end of the first servo motor is connected with a one-way threaded rod; and a placing plate is movably connected to the one-way threaded rod, and slidably connected to the outer shell of the device in a limited mode, and fixing pipes are connected into the placing plate through screws. The method for processing the graphene plate has the following beneficial effects that: the method for processing the graphene plate is improved on the basis of an existing method, all brackets can be driven to move downwards at the same time under the action of the own gravity of the graphene plate, and at the moment, all the brackets are combined with first rubber pistons and fixing pipes to extract air in rubber suction discs at the tops of first connecting pipes; and stable adsorbing and fixing work can be carried out on the graphene plate, and then the position deviation of the graphene plate in a grinding process can be effectively prevented.
Owner:杭州爱町环保科技有限公司
Vertical stereoscopic drainage device for sludge blowing and filling type reinforcement and using method
ActiveCN105735240AAccelerated consolidationShorten the drainage distanceSoil preservationSludgePolyvinyl chloride
The invention discloses a vertical stereoscopic drainage device for sludge blowing and filling type reinforcement and a using method. The vertical stereoscopic drainage device for sludge blowing and filling type reinforcement comprises filter membranes, polyvinyl chloride (PVC) pipes and cross joints. The vertical stereoscopic drainage device for sludge blowing and filling type reinforcement is characterized in that holes are formed in the PVC pipes, the PVC pipes are sleeved with the filter membranes, the corresponding PVC pipes sleeved with the corresponding filter membranes are connected to reach the required design length through upper main connectors and lower main connectors of the cross joints, and left branched connectors and right branched connectors of the cross joints are also connected with the corresponding PVC pipes sleeved with the corresponding filter membranes. The vertical stereoscopic drainage device for sludge blowing and filling type reinforcement and the using method have the advantages that (1) a vacuum load is effectively transmitted into a sludge layer, the drainage distance is further shortened, solidification of a soil body is accelerated, and the construction period is effectively shortened; (2) the way that a drainage plate is erected manually is adopted, a sand cushion does not need to be laid in advance, and particularly in areas lacking of sand sources, the effect of the method is extremely good; and (3) the vertical drainage device can be used repeatedly, and thus the cost is reduced.
Owner:HOHAI UNIV
Hidden attack detection method based on multi-scale sample entropy and Bayesian network
ActiveCN112800600ASatisfy real-timeThe method works wellDesign optimisation/simulationTransmissionControl systemEngineering
A hidden attack detection method based on a multi-scale sample entropy and a Bayesian network adopts the technical scheme that 1, information of a plurality of physical sensors of a networked motion control system is analyzed, so that the effect of the provided method is better than that of a method based on a single sensor; 2, from the perspective of data driving, sensor information existing in a networked motion control system is fully utilized, and an accurate control system model is not depended on; and 3, through simple coarse graining operation, more information is obtained with low calculation cost, and certain detection performance is improved while the real-time performance of the networked motion control system is met. And 4, the Bayesian network is combined with certain priori knowledge, has better generalization ability, is extremely high in calculation efficiency, and is a detection method very suitable for a networked motion control system.
Owner:ZHEJIANG UNIV OF TECH
MIMO radar DOA estimation method based on low-altitude multipath condition
ActiveCN110389319ASuppress interferenceImprove accuracyWave based measurement systemsAttenuation coefficientEstimation methods
The invention discloses an MIMO radar DOA estimation method based on a low-altitude multipath condition, and belongs to the technical field of array signal processing. According to the method, firstly, the influence of reflected signals is considered, and a four-path echo signal model is introduced; and then a received signal is smoothed by using a bidirectional spatial smoothing algorithm to reduce the influence of the multipath signal; finally, a real number field generalized MUSIC algorithm and a multipath attenuation coefficient and generalized MUSIC joint estimation algorithm are theoretically analyzed, and then two spectral peak search forms are analyzed; the main difference is that a large spectral peak value generated by a zero angle is suppressed by using a limit criterion, so that the influence of a pseudo spectral peak is reduced, and the estimation performance under the low-altitude condition is improved. On the basis, a more reasonable weighting mode is used for improvingan original spectral peak searching mode, and experiments prove that when compared with an existing method, the method of the invention is higher in estimation success probability and better in performance.
Owner:BEIJING UNIV OF TECH
Virtual network function resource consumption prediction method based on flow feature extraction
ActiveCN114070708AThe method works wellImprove forecast accuracyMathematical modelsKernel methodsPathPingFeature extraction
The invention relates to a virtual network function resource consumption prediction method based on flow feature extraction, and belongs to the field of mobile communication. The method comprises the following steps: S1, establishing different meta-paths between flow features and a CPU of a VNF through correlation between the flow features so as to construct an HIN; S2, acquiring a feature representation of each flow feature by using an HIN2Vec model; and S3, measuring the importance of each feature by using an attention mechanism, allocating different weights to the features, and then inputting the features are input into the MLP model to predict the resource consumption of the VNF. The method has good performance, and is superior to a traditional machine learning model and a common deep learning model in the aspect of prediction precision.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Breeding method of male sterile line and maintainer line of nucleo cytoplasmic interaction sunflower
ActiveCN112841022AStable inbred lineGood characterPlant genotype modificationBiotechnologyHybrid seed
The invention belongs to the technical field of plant breeding, and discloses a breeding method of a male sterile line and a maintainer line of a nucleo cytoplasmic interaction sunflower. The method comprises the following steps: an own maintainer line B{N(rr)} is taken as a target genetic gene receptor; a hybrid plant (A*R){S(Rr')} as a bridge; a sterile line A{S(r'r') is taken as a target genetic gene donor; and nuclear genes of the sterile line are continuously transferred into the plants of the maintaining type through bridging, so that the plants finally contain 99% or more of the nuclear genes (r'r') of the sterile line, and finally, the matched maintainer line B {N(r'r'} of the sterile line is obtained. According to the invention, the types of the existing sunflower cytoplasmic male sterility maintainer line are enriched, and a new sterile maintainer line transformation method is provided. The sunflower inbred line bred by the invention is stable, the sterility of the sterile line is thorough, and a new germplasm resource is provided for the utilization of sunflower heterosis. The created new material is stable and excellent in character, the purity of hybrid seeds prepared from the new material can reach 100%, and the popularization and application effects are obvious.
Owner:ECONOMIC CROPS RES INST XINJIANG ACAD OF AGRI SCI
Method for preventing saline-alkali soil salt return by utilizing salt isolation layer
The invention relates to a method for preventing saline-alkali soil salt return by utilizing a salt isolation layer. The method includes the steps of ploughing a saline-alkali soil layer with the thickness of 50-70cm, and removing ploughed soil; laying an iron tailing layer with the thickness of 5-10 cm; laying a straw layer with the thickness of 15-20 cm; laying a charcoal layer with the thickness of 4-8 cm; and conducting saline-alkali soil backfill. According to the method for preventing saline-alkali soil salt return by utilizing the salt isolation layer, the gathering speed of bottom salt on an earth surface can be reduced, and the effect of inhibiting soil salt return is achieved; the pH and the salt content of surface soil can be effectively reduced, the content of organic matters in the soil is increased, and a proper soil environment can be provided for plant growth; the salt isolation layer prepared from two solid wastes and biochar can achieve the effect of inhibiting soil salt return, turns waste into wealth, and improves the economic, social and environmental benefits; and the method has the characteristics of strong operability, good effect, high benefit and capability of being popularized and used in a large scale.
Owner:SHANDONG UNIV
Fresh-keeping method using gene silencing technology
The name of the present invention is a 'New-type fresh-keeping method using gene silencing technique as core'. It is characterized by that said invention adopts molecular biological measure, utilizes physiological characteristics of tomato and uses vacuum infiltration process to result in gene silence of key enzyme in the course of fruit maturity so as to attain the goal of delaying fruit maturity and prolonging fruit freshness.
Owner:朱本忠 +4
Preparation method of cherokee rose polysaccharide derivatives with antitumor activity
Owner:SOUTH CHINA UNIV OF TECH
A doa estimation method for mimo radar based on low-altitude multipath
ActiveCN110389319BReduce mistakesOvercome the effect of angle estimationWave based measurement systemsGeneralized algorithmMultiple signal classification
The invention discloses a MIMO radar DOA estimation method based on low-altitude multipath conditions, and belongs to the technical field of array signal processing. The present invention first considers the influence of reflected signals, and introduces a four-path echo signal model. Then use two-way space smoothing algorithm to smooth the received signal to reduce the influence of multipath signal. Finally, the generalized MUSIC algorithm in the real number domain and the joint estimation algorithm of multipath attenuation coefficient and generalized MUSIC are theoretically analyzed, and then the two spectral peak search forms are analyzed. Reduces the influence of spurious spectral peaks, thereby improving estimation performance at low altitudes. On this basis, this paper uses a more reasonable weighting method to improve the original peak search form. Experiments show that the proposed method has a higher estimated success probability and better performance than the existing methods.
Owner:BEIJING UNIV OF TECH
Hydrogen storage alloy type hydrogenation catalyst and preparation method thereof
ActiveCN101450314BReduce typesNon-toxicMetal/metal-oxides/metal-hydroxide catalystsPotassium borohydrideFiltration
The invention provides a hydrogen storage alloy type hydrogenation catalyst and a preparation method thereof. The hydrogen storage alloy type hydrogenation catalyst product is MlNi<3.7>Co<0.6>Mn<0.3>Al<0.4> (M is mixed rare earth). The method comprises the processes of prefabrication and activation of the hydrogen storage alloy type hydrogenation catalyst, wherein the prefabrication process is to smelt alloy raw materials for designing the counterweight of compositions under the protection of argon gas atmosphere, and to perform heat treatment, quenching and milling on the alloy raw materials; and the activation process is to add an alkaline solution of potassium borohydride or sodium borohydride into prefabricated hydrogen storage alloy type hydrogenation catalyst powder, to heat the mixture to obtain a treatment liquid, to add solid potassium borohydride or solid sodium borohydride into the treatment liquid, and to perform temperature rise, filtration and drying to obtain the activated hydrogen storage alloy type hydrogenation catalyst product. The yield of a reaction product obtained from the hydrogen storage alloy type hydrogenation catalyst during hydrogenation reaction at a temperature of 200 DEG C is improved from 2.6 percent to 65.6 percent.
Owner:兴化市正阳水泥有限公司
Field strength prediction method based on data interpolation method based on ray tracing model
ActiveCN106528956BGuaranteed correctnessGuaranteed accuracyDesign optimisation/simulationSpecial data processing applicationsComputation complexityAnalysis data
Owner:TIANJIN UNIV
A method and application of using grape seed green to synthesize nanometer zero-valent iron
ActiveCN104174870BThe method works wellGood effectMaterial nanotechnologyWater/sewage treatment by oxidationQuinoneBrilliant Red
A method for greenly synthesizing nanometer zero-valent iron by using grape seeds and its application, belonging to the field of nanomaterials and wastewater treatment. The preparation method is characterized in that at room temperature, the waste grape seed extract is used as a dispersant and an antioxidant to prepare nano-zero-valent iron particles, and the nano-zero-valent iron particles prepared by the method of the present invention have good dispersibility and stability sex. The nanometer zero-valent iron particles prepared by the present invention are used to catalyze and degrade reactive dyes in wastewater. Under the condition of dye wastewater pH=2-10, the azo dye reactive brilliant red K‑2G can be degraded by more than 98% within 9 minutes, and anthracene can be degraded by more than 98%. The quinone dye Reactive Brilliant Blue KN‑R degrades more than 95% within 30 minutes, and has strong environmental adaptability and high degradation efficiency. The method of the invention is simple in process, economical and efficient, realizes resource utilization of grape seeds, and the synthesized nanometer zero-valent iron has extremely strong activity and has wide application prospects.
Owner:BEIJING UNIV OF TECH
Indoor moving target positioning method and device and computer equipment
PendingCN113759309AImprove indoor positioning accuracyThe method works wellDigital technique networkPosition fixationSigma pointEngineering
The invention discloses an indoor moving target positioning method. The method comprises the following steps: establishing a state equation and an observation model of unknown moving target node motion; according to the state equation, obtaining a one-step predicted value and a covariance matrix of a system state quantity through a group of Sigma point sets calculated by UT and corresponding weights thereof, and observing the Sigma point sets; according to the observation model, calculating an observation prediction value of the observation Sigma point sets, and obtaining an observation prediction value of the system; and according to a cost function based on the maximum correlation entropy, fusing the observation predicted value of the system, obtaining an observation covariance matrix and an observation cross covariance matrix of the reconstructed observation model, determining a Kalman gain matrix, estimating the state quantity of the system, and determining the position coordinates of an unknown moving target node. According to the indoor positioning method based on the MCUKF, indoor positioning under the condition that non-Gaussian noise occurs in measurement noise can be better completed, the positioning precision is higher than that of LS, EKF and UKF indoor positioning methods, and the robustness is higher than that of the LS, EKF and UKF indoor positioning methods.
Owner:HOHAI UNIV
Method for reducing surface viscosity of bionic glue by using curing agents
InactiveCN102070961BReduce viscosityImprove waterproof performanceEster polymer adhesivesCoatingsMolecular sieveNatural product
The invention discloses a method for eliminating or reducing surface viscosity of bionic glue by using curing agents. The method comprises the following steps: spraying the curing agents on the surface of a plant which is sprayed with the bionic glue before the plant is harvested so as to eliminate or reduce the viscosity of the bionic glue; and then, carrying out other farming operations or harvests. The invention also discloses a corresponding liquid curing agent and a corresponding solid curing agent, wherein the liquid curing agent comprises the following components: 10-50% of poval, 0.05-0.1% of surfactant and the balance of water; and the solid curing agent is inert powder such as diatomite, zeolite powder, kaolin, attapulgite clay, molecular sieve or the like. The method disclosed by the invention has a good effect, and can obviously reduce the viscosity of the bionic glue; moreover, the curing agents disclosed by the invention are degradable materials or natural products, and are harmless to plants, animals and environment; and the liquid curing agent disclosed by the invention has a good waterproof property, and rainfall does not obviously influence the effect on reduction of the viscosity of the bionic glue.
Owner:INST OF MEDICINAL PLANT DEV CHINESE ACADEMY OF MEDICAL SCI +1
A kind of breeding method of male sterile line and maintainer line of sunflower with nucleoplasmic interaction
The invention belongs to the technical field of plant breeding, and discloses a method for breeding male sterile lines and maintainer lines of sunflower with nucleoplasmic interaction, using the self-owned maintainer line B{N(rr)} as the target genetic receptor; heterozygous The plant (A×R){S(Rr')} is the bridge; the sterile line A{S(r'r') is the target genetic donor; the nuclear gene of the sterile line is continuously transferred to the maintenance type through the bridge In the plants, it finally contains more than 99% of the sterile line nuclear gene (r'r'), and finally becomes the matching maintainer line B{N(r'r')} of the sterile line. The invention enriches the types of the existing sunflower cytoplasmic male sterility maintaining lines and the method for transferring new sterility maintaining lines. The sunflower inbred line selected by the invention is stable, and the sterile line has complete sterility, and provides new germplasm resources for the utilization of sunflower heterosis. The new material created is stable and has excellent properties, and the purity of hybrid seeds assembled by using the new material can reach 100%, and the popularization and application effect is obvious.
Owner:ECONOMIC CROPS RES INST XINJIANG ACAD OF AGRI SCI
Heating maintenance method for winter construction of base layer in cold region
The invention provides a winter construction heating maintenance method for a base layer in a cold region. The winter construction heating maintenance method is characterized by comprising the following steps: S1, calculating a heat loss value; s2, splicing a three-order Hilbert unit tube; s3, base layer film covering, wherein after the to-be-heated and cured base layer is rolled, the surface of the to-be-heated and cured base layer is immediately covered with a layer of film; s4, a water circulation layer is laid, specifically, a plurality of third-order Hilbert unit pipes obtained in the step S2 and passing the heat preservation test are further assembled on the thin film to form the water circulation layer, and then water is added into the water circulation layer for a closed water test; s5, covering a top thermal insulation layer; after the closed water test is qualified, the water circulation layer is covered with a heat preservation layer, and the covering thickness is not smaller than the thickness of the heat preservation layer in the step S1; s6, heating equipment is installed; and S7, heating maintenance monitoring. The problem of maintenance of the base layer in the cold environment is solved, the maintenance effect is good, the strength of the base layer can be naturally increased to reach the set strength, and therefore the construction quality of the base layer can be improved.
Owner:CCFEB CIVIL ENG
A Color Image Color Migration Method
ActiveCN105761202BThe method works wellProcessing speedImage enhancementImage analysisColor imagePattern recognition
The invention discloses a color image color migration method, which is a color migration method that adjusts the tone of the current color image with reference to a specified color image, so that the processed output image has a tone expression similar to the reference image. The process includes constructing an intermediate image , mesh division processing, color migration processing. Through this method, color migration between color images can be better automatically realized without manual intervention. Especially in the case where the tonal difference between the image to be processed and the reference image is large, a better color migration effect can be obtained.
Owner:WUHAN UNIV
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