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67results about How to "Increase fix rate" patented technology
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CORS region ionosphere modeling method
The invention provides a CORS (Continuously Operating Reference Station) region ionosphere modeling method comprising the following steps: building a network baseline according to a network baseline length threshold and the known coordinates of a CORS reference station; constituting a calculation unit with a main reference station and baselines connected therewith as elements according to the relationship between the network baseline and the reference station; choosing a reference satellite; building a network baseline double-difference observation equation; performing ionosphere modeling according to the position of the ionosphere puncture point of each reference station; building a Kalman filter to solve parameters to be estimated; fixing the ambiguity according to the result of Kalman filtering; and working out the fixed solutions of ionosphere model parameters according to the fixed ambiguity. According to the invention, ionosphere modeling is performed with a reference station as a calculation unit, the number of calculation units is reduced, the number of available baselines of each calculation unit is increased obviously, and the estimated ionosphere model is of higher accuracy. The method is applicable to ionosphere interpolation under the condition that the user is outside a reference station network.
Owner:SHANGHAI HUACE NAVIGATION TECH
GNSS double-frequency carrier phase integer ambiguity resolving method
PendingCN111751853AAchieve correct fixationReliable solutionSatellite radio beaconingCarrier signalIonosphere
The invention provides a GNSS double-frequency carrier phase integer ambiguity resolving method, and belongs to the technical field of satellite high-precision positioning. The method comprises the following steps that: after preprocessing a double-frequency carrier phase observation value. screening out an optimal carrier observed quantity to establish a double-difference geometric-free ionosphere-free observed quantity and a wide-lane carrier combined observed quantity; on the premise of estimating the wide lane ambiguity floating point solution precision and the single epoch wide lane ambiguity passing rate, searching fixed wide lane whole cycle ambiguity by using an LAMBDA method, estimating an ambiguity floating point solution of ionosphere-free combined observed quantity by using a Kalman filter, searching and fixing narrow lane whole cycle ambiguity by using the LAMBDA method, and finally performing back substitution solution on a positioning equation set to realize high-precision positioning and attitude solution of a satellite. According to the method, while the precision of the wide-lane ambiguity floating point solution is considered, the problem of low wide-lane ambiguity fixation rate is solved by utilizing an LAMBDA search algorithm, and meanwhile, the narrow-lane ambiguity floating point solution is well estimated, so that the overall fixation rate of a baselineis improved.
Owner:北京华龙通科技有限公司
Toner for developing electrostatic image
ActiveUS20090047590A1Excellent low temperature fixabilityIncrease fix rateDevelopersAliphatic hydrocarbonEngineering
Provided is a toner for developing electrostatic image which is excellent in shelf stability, and is further excellent in low-temperature fixability so as to be capable of maintaining a high fixing rate even at a low fixing temperature.A toner for developing electrostatic image is used which comprises colored resin particles containing a binder resin, a colorant, and a parting agent, wherein the parting agent is an aliphatic hydrocarbon polymer obtained by polymerizing an aliphatic hydrocarbon monomer.
Owner:ZEON CORP
Lipase immobilization carrier and method for immobilizing lipase
The invention discloses a lipase immobilization carrier, which takes collagen as a base material, and collagen enables crosslinking with a cross-linking agent under acidic condition and neutral alkali-bias condition in order, and then a neutral buffer solution is used for flushing to remove the unreacted cross-linking agent; free aldehyde content of the carrier is 0.5-5.0 mmol / g, dry heat modification temperature is 80-100 DEG C, and the specific surface area is 2.0-20 m<2> / g. The invention also discloses a method for immobilizing lipase by using the lipase immobilization carrier. The vitality of the immobilization lipase is more than 70U / g, and enzyme vitality can reach more than 95% after one month preservation under normal temperature. The raw materials of the carrier have the advantages of abundant source, natural performance and regeneration, low cost, large specific surface area, stable chemical performance, high heat stability and low preparation cost; immobilized lipase vitality and vitality conservation rate are high, and enzyme activity can be kept at more than 95% after one month storage under normal temperature.
Owner:SICHUAN UNIV
Novel reactive dyestuff with N,N-dialkylamino bridge group
InactiveUS20090176972A1High color yieldHigh fastnessDisazo dyesOrganic chemistryPolyaminePhotochemistry
The present invention relates to a novel reactive dyestuff with an N,N-dialkylamino bridge group, represented by the following formula (I):wherein R, B, B′, E1, E2, Z, Z′, i, j, R1, R2, m and n are defined the same as the specification. The reactive dyestuff of the present invention is suitable for exhaust dyeing, cold batch-up dyeing, continuous dyeing, printing and digital spray printing materials that contain hydroxyl group or polyamine fibers.
Owner:EVERLIGHT USA INC
Reactive dyestuff with dialkylether bridge group
The present invention relates to a novel reactive dyestuff with dialkylether bridge group, represented by the following formula (I):wherein B, B′, E1, E2, Z, Z′, i, j, (R1)0-3, (R2)0-3, m and n are defined the same as the specification. The reactive dyestuff of the present invention is suitable for exhaust dyeing, cold batch-up dyeing, continuous dyeing, printing and digital spray printing materials that contain hydroxyl group or amino group fibers.
Owner:EVERLIGHT USA INC
Active amino-modified substrate for microarray and preparation method of active amino-modified substrate
InactiveCN106345544AResolve SensitivityFix stability issuesLaboratory glasswaresSilanizationPolylysine
The invention relates to an active amino-modified substrate for a microarray and a preparation method of the active amino-modified substrate and belongs to the technical field of medical science and biology. The biological chip substrate is characterized in that amino silanization treatment is performed on the surface of a glass substrate, and polylysine coating is performed on the obtained glass substrate with rich amino on the surface to obtain the active amino-modified glass substrate. The active amino-modified substrate has the advantages that due to the fact preprocessing is performed by using concentrated sulfuric acid and hydrogen peroxide according to optimal proportion, the problem that a common substrate has many impurities is solved, polylysine coating is performed after the amino silanization, the dual combined effect of static absorption and chemical coupling is formed, the fixing rate of the substrate to a probe is evidently increased, and the problems that the substrate is low in sensitivity and poor in stability are solved; the substrate is a biological chip probe vector with excellent performance and quality and is widely applicable to biological chip preparation.
Owner:重庆高圣生物医药有限责任公司
Method for preparing solidified bodies on basis of cesium-adsorbed silicon-based heteropolyacid salt composite adsorbents
The invention discloses a method for preparing solidified bodies on the basis of cesium-adsorbed silicon-based heteropolyacid salt composite adsorbents. The method includes particular steps of firstly, mixing solidifying base materials and the cesium-adsorbed silicon-based heteropolyacid salt composite adsorbents with one another to obtain mixtures and uniformly grinding the mixtures; secondly, carrying out static-pressure molding on the ground mixtures to obtain molded blanks; thirdly, calcining the molded blanks at the high temperatures of 800-1500 DEG C for 2-5 hours and annealing the molded blanks until the temperatures of the molded blanks reach the room temperature to obtain the cesium-containing ceramic solidified bodies. The solidifying base materials are selectively one or two types of allophane or zeolite materials. The method has the advantages that the solidifying materials such as allophane or zeolite are low in price and are easily available, processes for preparing the solidified bodies are simple, good cesium immobilization effects can be realized by the solidified bodies, the solidified bodies are high in strength and low in leaching rate, the method is applicable to solidifying and treating cesium-containing radioactive waste, and the like.
Owner:SHANGHAI JIAO TONG UNIV
Image forming method
InactiveUS20130202336A1Increase fix rateNigh fixing strengthElectrographic process apparatusFixing agentsAliphatic hydrocarbonOrganic chemistry
In an image forming method of wet fixing system, the fixing solution contains an ester compound represented by at least one of general formula (1) and general formula (2) below:R11—(CO)—O—R12 General formula (1):where R11 represents a linear or branched alkyl group having at least one hydroxyl group and 2 to 11 carbon atoms, and R12 represents a linear or branched alkyl group having 1 to 4 carbon atoms;R21—O—(CO)—R22—(CO)—O—R23 General formula (2):where R21 represents a linear or branched aliphatic hydrocarbon group having 1 to 4 carbon atoms, R22 represents a linear or branched aliphatic hydrocarbon group having at least one hydroxyl group and 1 to 8 carbon atoms, and R23 represents a linear or branched aliphatic hydrocarbon group having 1 to 4 carbon atoms.
Owner:KONICA MINOLTA BUSINESS TECH INC
Novel reactive dyestuff with N-alkylamino group
ActiveUS20110015378A1Increase fix rateEasy constructionReactive dyesIndigoid dyesHydroxy groupPhotochemistry
The present invention relates to a novel reactive dyestuff with a N-alkylamino group, represented by the following formula (I):wherein A1, A2, R1, R2, R3, R4, (R5)0-2, (R6)0-2, (Z1)0-1, (Z2)0-1, X1, X2 and n are defined the same as the specification. The reactive dyestuff of the present invention is suitable for exhaust dyeing, cold batch-up dyeing, continuous dyeing, printing and digital spray printing materials that contain hydroxyl group or amino group fibers.
Owner:EVERLIGHT USA INC
High-performance RTK processing technological method
ActiveCN110068848AHigh precisionImprove reliabilitySatellite radio beaconingICT adaptationFixed ratioIonosphere
The invention discloses a high-performance RTK processing technological method. The high-performance RTK processing technological method comprises the following steps: building an ionized layer, a convection layer and a multipath error model. The specific method comprises the following steps: S1, building a double-error RTK observation model, and estimating baseline vectors between a user and a baseline station and parameters of the ionized layer in real time; and carrying out carrier smoothing code pseudo range, hardware delay estimation and inclination-verticality transformation on GNSS double-frequency measurement data to acquire vertical ionized layer delay parameters from a receiver to a puncturing point of a satellite line and the ionized layer; S2, selecting multiple reference points and multiple reference satellites of to-be-measured areas; and S3, avoiding base stations which can easily produce multipath environments, and adopting instrument equipment with multipath error resistance in proper base stations. The RTK initialization accuracy and reliability are higher, the positioning is more accurate, the system cost is reduced, the size is reduced, a fixing ratio of RTK under a complicated environment is increased, an algorithm is simplified, and the cost of RTK is reduced.
Owner:江苏北斗星通汽车电子有限公司
Mixtures of fiber-reactive azo dyes
The present invention provides dye mixtures containing a dye of the formula (I)and a dye of the formulae (II)whereZ is —CH═CH2 or —CH2CH2Z1 andZ1 is hydroxyl or an alkali-eliminable group; andM is hydrogen, an alkali metal or one equivalent of an alkaline earth metal. The invention also relates to a process for their preparation and their use.
Owner:DYSTAR
Label-free electrochemical sensing detection method used for activity of protein tyrosine phosphatase
InactiveCN106957892AMaintain electrochemical responseGuaranteed identifiabilityMicrobiological testing/measurementSemiconductor electrodeElectrochemical biosensor
The invention discloses a simple, rapid and label-free electrochemical sensing detection method used for the activity of protein tyrosine phosphatase (PTP). A substrate (containing phosphotyrosine) polypeptide molecular membrane is constructed on a semiconductor electrode by utilizing a covalent immobilization technology; tyrosine in a polypeptide molecule is used as an electrochemical signal probe and is combined with a catalytic amplification function of a metal complex of an electron mediator osmium with a suitable electric potential, so as to establish an electrochemical biosensor for quantitatively detecting the activity of the PTP; the minimum detection limit is 10nM; and the method can also be applied to rapid screening of PTP inhibitors and medicine molecules. The electrochemical sensing method has the greatest advantage that antibodies and signal labeled molecule are not needed and operation steps are simple; and the electrochemical sensing method is very suitable for quantitative detection of the activity of the protein tyrosine phosphatase.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
GNSS segmentation smoothing filtering method based on cycle slip detection and repairing
ActiveCN109581453AIncrease fix rateImprove navigation positioning accuracySatellite radio beaconingICT adaptationKaiman filterObservation data
The invention provides a GNSS segmentation smoothing filtering method based on cycle slip detection and repairing. The GNSS segmentation smoothing filtering method based on the cycle slip detection and repairing comprises the steps that after the cycle slip detection and repairing are carried out on original observation data, if the number of effective common-view satellites is more than a certainnumber, kalman filter forward filtering calculating is used in a segment, and the ambiguities are determined; a moment tm when the number of common-view satellites with fixed ambiguities is maximum is selected to be taken as a starting point of reverse smoothing; the fixed common-view satellite ambiguities at the starting point of the reverse smoothing are reverse transmitted to a front epoch tm-1, and aiming at the moment of the epoch tm-1, positioning results are updated by combining original satellite carrier phase observations and transmitted common-view satellite ambiguities; by using the updated positioning results and the carrier phase observations, ambiguities of other non-common-view satellites at the moment of the epoch tm-1 are subjected to reverse back calculation and fixing;if intpart precision and standard deviations of the ambiguities of other non-common-view satellites are all within a setting threshold value, the ambiguities are fixed successfully; and on the contrary, the ambiguities are fixed unsuccessfully.
Owner:NANJING NORTH OPTICAL ELECTRONICS
Method for continuously producing polycarbonate-polyether polyol in channelization mode through preheating liquid phase method
The invention discloses a method for continuously producing polycarbonate-polyether polyol in a channelization mode through a preheating liquid phase method, which comprises the following steps of (1)feeding raw materials including an epoxy compound, a catalyst and a chain transfer agent into a premixing tank according to a certain proportion, uniformly mixing, and pumping into a channelization reactor, (2) preheating carbon dioxide to 50-120 DEG C, pumping the preheated carbon dioxide into the channelization reactor from an inlet of the channelization reactor, and pressurizing to 1-15 MPa, (3) heating to 70-150 DEG C, enabling the chain transfer agent, the epoxy compound and carbon dioxide to be in contact in the channelization reactor in the presence of a catalyst, and carrying out polymerization reaction, (4) enabling part or all of the polymerization reaction product material flow in the step (3) to flow through a cooling section group, separating out part of polycarbonate-polyether polyol, and circulating the rest of the polymerization reaction product material flow to the step (1), the catalyst being modified by a mixed acid, and being obtained by reacting water-soluble metal salts of zinc and cobalt in a water-soluble solvent.
Owner:HANGZHOU POLY MATERIAL SCI & TECH CO LTD
Surface-modified silica powder and method for producing the same, as well as toner composition for electrophotography
InactiveUS20130296578A1Increase fix rateGood time stabilityPigmenting treatmentSilicon organic compoundsImaging qualitySilicon dioxide
Provided by the present invention is a surface-modified silica powder, characterized in that the said powder is obtained by surface treatment of a silica powder with one or two or more of a compound (A) and with an aminosilane (B), wherein the fixing rate of the compound (A) and the aminosilane (B) is a total of 50% or more, the hydrophobic rate is 80% or more, and the triboelectrostatic charge amount is 200 μC / g or less in its absolute value. The surface-modified silica powder of the present invention can stabilize many properties including fluidity and electrostatic properties while can significantly reduce problems such as fogging and decrease in image quality without significantly deteriorating characteristics of a developing agent and so forth when this is used as an external additive.
Owner:NIPPON AEROSIL +1
Reactive dyestuff with N,N-dialkylamino bridge group
InactiveUS7619074B2High color yieldImprove bindingOrganic chemistryDisazo dyesPolyaminePhotochemistry
The present invention relates to a novel reactive dyestuff with an N,N-dialkylamino bridge group, represented by the following formula (I):wherein R, B, B′, E1, E2, Z, Z′, i, j, R1, R2, m and n are defined the same as the specification. The reactive dyestuff of the present invention is suitable for exhaust dyeing, cold batch-up dyeing, continuous dyeing, printing and digital spray printing materials that contain hydroxyl group or polyamine fibers.
Owner:EVERLIGHT USA INC
Logistics wiring method and device, electronic equipment and readable storage medium
InactiveCN111461396AIncrease fix rateImprove delivery timelinessForecastingGeographical information databasesLogistics managementComputer science
The embodiment of the invention provides a logistics wiring method and device, electronic equipment and a readable storage medium, and the method comprises: carrying out the mesh generation of a target region according to the geographic position of a to-be-wired point in the target region; expanding outwards layer by layer by taking the initial grid in the target area as a center, and determininga target wire arrangement template corresponding to the expanded current local search area according to a historical wire arrangement template in the target area in the expanding process; and according to the target wiring template and a first constraint condition, carrying out wiring on the point locations in the current local search area until all grids in the target area are searched, and obtaining a wiring result of the target area. According to the embodiment of the invention, the line fixing rate can be improved; and, in a regional multi-vehicle-model scene, the delivery time efficiencycan be improved, and the delivery cost is reduced.
Owner:BEIJING SANKUAI ONLINE TECH CO LTD
Lipase immobilized carrier and method for immobilizing lipase
Owner:SICHUAN UNIV
Method for preparing aliphatic polyester (urethane urea-amine)
The invention discloses a method for preparing aliphatic polyester (urethane urea-amine). The method comprises: subjecting an aziridine compound and CO2 in the presence of a rare earth ternary catalyst to obtain the aliphatic polyester (urethane urea-amine) which consists of a rare earth carboxylic acid compound, glycerol, diethylzinc and 1,3-dioxolane, wherein the molar ratio of the rare earth carboxylic acid compound to glycerol to diethylzinc is (0.85-1.15):(8.5-11.5):(17-23). The conversion rate of the aliphatic polyester (urethane urea-amine) prepared by the method is more than 80 percent, the molecular weight of the copolymer is 3*10<3> to 4*10<4>, the urethane urea content is more than 80 percent, and the carbon dioxide immobilization rate is more than 38 weight percent.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Method of reducing cadmium volatilization in process of preparing biological carbon from straw
InactiveCN108130108ALarge specific surface areaChange the surface void structureOther chemical processesBiofuelsIron saltsSoil heavy metals
The invention provides a method of reducing cadmium volatilization in a process of preparing biological carbon from straw. The method comprises the steps of mixing the straw and an iron salt solid ata weight ratio of (5-20):1 for firing. The straw is crop straw after restoration of heavy metal polluted soil. According to the method, the straw and the iron salt solid are mixed at the weight ratioof (5-20): for firing; the specific surface area of the biological carbon is increased; a surface gap structure of the biological carbon is changed; adsorption and stabilization of cadmium are more facilitated; and therefore, the cadmium volatilization is reduced. The method effectively provides a novel solution and an approach for subsequent treatment of restoration of soil heavy metal pollutionby plants, and reduces secondary heavy metal pollution, and plant reclamation has wider application prospects.
Owner:湖南玖恪环境工程有限公司
Microalga strain with high CO2 tolerance and high fixation rate and breeding method thereof
InactiveCN102703326BImprove toleranceEasy to fixUnicellular algaeMutant preparationHigh concentrationOrganism
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
Needle farming method
ActiveCN102711439AEasy to useImprove amazing dataHorticulture methodsPlant cultivationBiological bodyCasparian strip
Disclosed is a farming method in which equilibrium electric potential distribution between the inside and outside of plant organisms is carried out, promoting the functional activation and growth of the organisms. The farming method promotes the increased growth of plant organisms which have a Casparian strip. When a conductor is inserted / implanted into a plant organism from the external epidermis side at an approximately right angle and connects the internal high electric potential from deeper inside the plant organism than the Casparian strip with the external low electric potential from the epidermis side, the electric potential at the insertion / implantation site is increased by 2-4 times within 24 hours. The insertion / implantation site acts as a plant organism meridian point and directly couples the high electric potential from inside the plant organism and the low electric potential from outside the plant organism via the conductor. Alternatively, when the conductor is passed completely through the plant organism to the opposite external surface at an approximately right angle, the electric potential on the epidermis side of the living organism is increased.
Owner:日本环研株式会社
Real-time data stream interruption comprehensive compensation method based on broadcast ephemeris
ActiveCN111812676AImprove forecast accuracyResolve continuitySatellite radio beaconingPrecise Point PositioningEphemeris
The invention discloses a real-time data stream interruption comprehensive compensation method based on broadcast ephemeris. A real-time PPP (precise point positioning) needs to receive an orbit and aclock error correction number in real time, and when a real-time data stream is interrupted or large time delay exists, the continuity and reliability of high-precision positioning of a user are difficult to guarantee. To solve the above problem, the method is based on a regional reference station network, the ambiguity of a previous epoch, satellite FCBs (fractional-cyclic biases) and tropospheric delay predicted in a short time are utilized, at the current epoch, the ionosphere-free combination of the broadcast ephemeris is adopted to carry out extraction and weighted modeling on comprehensive errors including orbit errors, satellite clock errors and receiver related errors, and the comprehensive errors are broadcasted to users. When the real-time orbit and the clock error correction number are interrupted or lagged, a user can still adopt broadcast ephemeris and comprehensive errors to replace, and high-precision enhanced positioning is continuously realized.
Owner:SOUTHEAST UNIV
Preparation method of alkali-activated copper slag-based pervious concrete and alkali-activated copper slag-based pervious concrete
The invention provides a preparation method of alkali-activated copper slag-based pervious concrete and the alkali-activated copper slag-based pervious concrete. The method comprises the following steps: (1) respectively carrying out dry grinding on copper slag and carbide slag to obtain copper slag powder and carbide slag powder; crushing the red mud, and performing dry grinding to obtain red mud powder; (2) 195-205 parts by weight of copper slag powder and 95-105 parts by weight of water are taken, 0.1-0.2 part by weight of a water reducing agent is added, wet grinding is conducted for 15-25 min, and copper slag slurry is obtained and marked as slurry A; taking 80-83 parts by weight of red mud powder and 160-165 parts by weight of water, and performing wet grinding for 20-40 minutes to obtain red mud slurry which is marked as slurry B; (3) mixing ammonium tartrate, sodium sulfate, lignosulfonate, hydroxypropyl methyl cellulose and wood fiber according to a ratio of 1: 2: 3: 1: 1 to prepare a reinforcing agent; and (4) uniformly stirring 20-40 parts by weight of carbide slag powder, 50-60 parts by weight of the slurry A, 30-40 parts by weight of the slurry B, 2-8 parts by weight of sodium carbonate, 5-15 parts by weight of water, 2-3 parts by weight of a reinforcing agent, 1-2 parts by weight of a water reducing agent, 120-160 parts by weight of river sand, 40-80 parts by weight of copper slag powder and 250-350 parts by weight of coal gangue.
Owner:HUBEI UNIV OF TECH
Membrane covering aerobic fermentation circulating device and circulating method
ActiveCN114350500AImprove the environmentFully play the role of metabolismBioreactor/fermenter combinationsBio-organic fraction processingAutomatic controlGreenhouse
The invention relates to the technical field of circulation in organic solid waste fermentation treatment, in particular to a membrane covering aerobic fermentation circulation device and a membrane covering aerobic fermentation circulation method. Comprising a fan, the fan is connected with a plurality of fermentation bins, an air inlet of each fermentation bin is connected with the fan through an air supply pipe, and an air outlet of each fermentation bin is connected with the fan through an exhaust pipe; an automatic monitoring unit is arranged above a stockpile of the fermentation bin, and the automatic monitoring unit and the fan are both connected with an automatic control unit; a waterproof moisture-permeable film covers the upper part of the stockpile in the fermentation bin. The device can adjust the temperature and humidity in the fermentation bin and the oxygen concentration distribution in the stockpiling room, so that the fermentation bin performs sufficient internal and external circulation, the fermentation is sufficient, and the fermentation effect is good. According to the circulating method carried out by adopting the device, uniform fermentation can be carried out in the fermentation bin, oxygen and temperature initially required by fermentation reaction can be provided for other fermentation bins, the fermentation reaction is promoted, the overall efficiency is improved, the carbon fixation rate is increased, and greenhouse gas emission is reduced.
Owner:领先生物农业股份有限公司
Method for continuously producing polypropylene carbonate by preheating liquid phase method in channelization manner
The invention discloses a method for continuously producing polypropylene carbonate by a preheating liquid phase method in a channelization manner, which comprises the following steps: (1) feeding rawmaterials including propylene oxide and a catalyst into a premixing tank according to a certain proportion, uniformly mixing, and pumping into a channelization reactor; (2) preheating carbon dioxideto 40-150 DEG C, pumping into a channelization reactor, and pressurizing to 1-15 MPa; (3) heating to 70-150 DEG C to enable epoxypropane and carbon dioxide to be in contact in a pipelined reactor in the presence of a catalyst, and carrying out a polymerization reaction; (4) after part or all of the polymerization reaction product material flow flows through a cooling section group, separating outpart of the polypropylene carbonate from the polymerization reaction product material flow, and circulating the rest of the polymerization reaction product material flow to the step (1); wherein the catalyst is modified by mixed acid, and the zinc-cobalt double metal cyanide complex catalyst is obtained by reacting water-soluble metal salts of zinc and cobalt in a water-soluble solvent.
Owner:HANGZHOU POLY MATERIAL SCI & TECH CO LTD
Riverbank vegetation buffer zone and construction method
InactiveCN112088708AReduce areaSatisfy needsGrowth substratesCulture mediaBuffer stripAmmoniacal nitrogen
The invention discloses a construction method of a riverbank vegetation buffer zone. The construction method comprises the following steps of: selecting an area 10-100m away from a riverbank as a buffer zone construction area, adjusting the earth surface gradient of the buffer zone construction area, and sequentially arranging a reinforced matrix zone, an arbor zone and a shrub and grass zone according to the sequence of the riverbank from far to near; and the reinforced matrix belt is composed of soil and activated carbon. According to the buffer zone constructed by the method, the ammonia nitrogen content in river water and surface runoff is reduced, and meanwhile, the organic matter content in soil is increased.
Owner:JILIN CITY ACADEMY OF FORESTRY
Oyster shell-based biological agent for water purification and preparation method of biological agent
InactiveCN110642392AIncrease vitalityIncrease fix rateSeawater treatmentBiological water/sewage treatmentMicroorganismMicrosphere
The invention belongs to the fields of environmental treatment and restoration, and particularly relates to a biological agent applied to water purification and a preparation method of the biologicalagent. The biological agent for water purification disclosed in the invention is prepared from the following raw materials in parts by weight: 80-100 parts of oyster shell powder, 3-5 parts of stronger ammonia water, 5-10 parts of ethylenediamine, 10-15 parts of microbial powder, and 50-80 parts of cationic polyacrylamide. The invention provides the biological agent aiming at the increasingly serious water pollution problem, the oyster shell-based multi-layer self-encapsulating microbial microspheres are formed by the steps of performing crushing by using oyster shells that are abundant in theaquatic industry as raw materials, performing calcination, performing a reaction with the ethylenediamine and the ammonia water to graft positively-charged amine groups on the surface, and immobilizing microorganisms on the oyster shell powder substrate through a multi-layer self-encapsulation technology, and the microbial microspheres are used for water purification.
Owner:MINNAN NORMAL UNIV
Method for separating ambiguity and resolving position
PendingCN113419263APrecise positioningFlexible configuration of ambiguity resolution frequencySatellite radio beaconingTelecommunicationsFloating point
The invention relates to a method for separating ambiguity and position calculation. The ambiguity and the position calculation are separated, under the conditions that the number of satellites is large and CPU resources of a high-precision GNSS satellite navigation receiver are limited, the ambiguity calculation frequency is flexibly configured, the precision position calculation frequency is improved under the condition of low CPU consumption, and high-precision positioning is realized through high-frequency and high-precision position calculation. According to the method, the fixed ambiguity at the previous moment is utilized to operate the position resolving thread for the floating solution of a certain epoch of an ambiguity resolving thread due to the addition of satellites and other reasons, and the fixed information at the previous moment is utilized by the current epoch, so that the fixed rate is improved.
Owner:WUHAN NAVIGATION & LBS INC
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