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169results about How to "Suitable for field use" patented technology
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General signal generator for radar target simulation
InactiveCN105403870AControllable distanceEasy to control speedWave based measurement systemsSequence controlRadar systems
The invention, which relates to the technical field of the radar target simulation, discloses a general signal generator for radar target simulation. With the signal generator, a defect that the existing radar target signal generator is based on a special-purpose signal generator and only serve a radar system with a specific type in terms of frequency band coverage and function setting and thus the application range is limited can be solved. The signal generator comprises an embedded main control computer, a timing sequence control unit, an attenuation drive, a local oscillation module, a filtering, amplifying and limiting amplitude power divider, a plurality of digital radio frequency storage and playback modules, a plurality of Doppler frequency simulation modules, a radar cross section control module, a noise modulation module, a microwave down mixer, and IQ up mixing unit and the like. The output terminal of the microwave down mixer is connected with the filtering, amplifying and limiting amplitude power divider; the multiple digital radio frequency storage and playback modules are connected to the filtering, amplifying and limiting amplitude power divider; and the output terminal of each digital radio frequency storage and playback module is connected with one Doppler frequency simulation module.
Owner:THE 41ST INST OF CHINA ELECTRONICS TECH GRP
Opening-nozzle saddle-shaped seam welding equipment
ActiveCN101786210ASimple and compact structureRealize one machine with multiple functionsWelding/cutting auxillary devicesAuxillary welding devicesSeam weldingSaddle shape
The invention relates to opening-nozzle saddle-shaped seam welding equipment, which mainly comprises a cross-shaped automatic operation machine (1), a welding head track (2), a welding head (3) and a cylinder body workpiece (4). An axial moving device (11) of the cross-shaped automatic operation machine (1) is connected with a corresponding basic part; a vertical lifting arm (12) of the cross-shaped automatic operation machine (1) is assembled together with a transverse moving arm (13) by taking the axial moving device (11) as the base and is connected with the welding head track (2) through a suspension arm (17); and the welding head (3) is connected with the welding head track (2) through a locking mechanism (31) and can run along a ring-shaped track (21). The equipment achieves the function of multiple purposes, namely can perform gas cutting or plasma cutting on a saddle-shaped bevel pipe end and a pipe hole, and can perform high quality welding between the bevel pipe end and the pipe hole after an actuating mechanism is replaced; and in addition, the equipment has a compact and simple structure and is very suitable to be used on a construction site.
Owner:BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
Excitation state molecular collision surface desorption electric dissociation ion transfer spectrum detection method and apparatus
InactiveCN101178381ACompact structureReduce weightMaterial analysis by electric/magnetic meansDesorptionPesticide residue
The invention discloses a detection method and a device for ion mobility spectrometry of excited state molecular collision surface desorption ionization, an excited state generator is arranged in front of an ion entrance of a mobility tube of the ion mobility spectrometry, a placement region of the samples to be measured is arranged between the excited state generator and the ion mobility spectrometry, which is exposed in the atmosphere directly, the excited state generator includes a discharge cavity, the front end of the interior of the discharge cavity is connected with a discharge part, the back end of the discharge part is equipped with an ion filter door and an exclusion electrode sequentially, the back end of the exclusion electrode is an outlet of the discharge cavity, and an ion introducing electrode is arranged in the mobility tube of the ion mobility spectrometry. The invention can work in the open atmospheric environment, the measured surface does not need the pretreatment, the invention can realize the desorption ionization and rapid detection in situ of the trace components on the surface of the object, the invention can not only be used for analysis and detection of the surface pesticide residues, but can also be applicable to the detection of the toxic and harmful dangerous goods on the surface of the object. The invention is characterized by rapid detection speed, high sensitivity, small volume of the device, easy operation and so on.
Owner:ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Method for detecting phthalate ester plasticizer in plastic
InactiveCN101852766AEasy to carrySmall and portableMaterial analysis by electric/magnetic meansSolid solvent extractionPlasticizerPretreatment method
The invention discloses a simple, fast and sensitive method for detecting a plasticizer (phthalate ester) in plastic, which is based on ion mobility spectrometry and detects phthalate ester in an extracting solution using a fast ion mobility spectrometry detector in combination with a simple organic solvent extraction pretreatment method. The measurement method is simple, fast and reliable. The analysis time of the method is only 0.5min, the requirement on a sample pretreatment is low, the detection time is short, the sensitivity is high, and the detection limit can be up to 1ppb.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Blade imbalance on-line fault diagnosis method of doubly-fed wind generator
InactiveCN103759891AQuickly Diagnose Unbalance FaultsEnsure safe workStatic/dynamic balance measurementElectricityPower flow
The invention provides a blade imbalance on-line fault diagnosis method of a doubly-fed wind generator. The method comprises the steps that the rotating speed of the doubly-fed wind generator and the power signal P output by the generator are synchronously sampled; the input pneumatic torque T of a fan hub is estimated according to the rotational inertia J of the fan hub and the generator output power and the rotating speed which are synchronous sampled in the sampling period; order analysis is conducted to obtain a resampled pneumatic torque Ta, and the frequency fuzzy phenomenon caused by rotating speed variation is removed; power spectrum analysis is conducted on the signals after order analysis and reconstitution, and feature extraction is conducted; a frequency doubling power spectrum amplitude Q(1) and a frequency tripling power spectrum amplitude Q(3) are compared, and if Q(1) is larger than Q(3), it is judged that an imbalance fault happen. According to the blade imbalance on-line fault diagnosis method of the doubly-fed wind generator, the blade imbalance fault of the doubly-fed wind generator is judged according to the synchronously-sampled signals of the rotating speed, the voltages and the currents of the doubly-fed wind generator, and safe and normal working of a wind generating set is guaranteed. A used sensor is simple, convenient to mount and very suitable for field service.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Checking device and checking method of accuracy of capacitor voltage transformer
InactiveCN101988958AReduce volumeReduce weightElectrical measurementsVoltage regulatorField calibration
The invention relates to a checking device and checking method of the accuracy of a capacitor voltage transformer. The method comprises the following steps: (1) selecting a set-up voltage regulator, a capacitor voltage ratio standard device and an error measuring device according to a capacitor voltage transformer to be checked; (2) carrying out field calibration of the voltage-dividing ratio coefficient of the capacitor voltage ratio standard device; (3) connecting the devices; and (4) displaying the ratio difference value and angle difference value of the capacitor voltage transformer to be checked by the error measuring device, and judging whether the accuracy of the capacitor voltage transformer to be checked meets the specification requirement or not according to the ratio difference value and the angle difference value. The checking device and checking method of the accuracy of the capacitor voltage transformer provided by the invention can be used for conveniently and effectively checking the accuracy of the capacitor voltage transformer in the field with high accuracy, and are suitable for checking the accuracy of 220 kV or less capacitor voltage transformers and 0.2V or less capacitor voltage transformers.
Owner:EAST CHINA ELECTRIC POWER TEST & RES INST
Method for detecting tobacco leaf chemical ingredient adopting near infrared light
ActiveCN1828272ADetermine the qualityAccurate analysisColor/spectral properties measurementsChemical compositionMathematical model
Owner:CHINA TOBACCO SHANDONG IND
Method for detecting chemical ingredient of tobacco adopting near infrared light
ActiveCN1828271ADetermine the qualityAccurate analysisColor/spectral properties measurementsChemical compositionEngineering
Owner:CHINA TOBACCO SHANDONG IND
Multi-purpose vehicle mounted soil specific conductivity real-time tester
InactiveCN1920583ABroken soil strengthStrong weeding abilityResistance/reactance/impedenceMaterial resistanceElectricityLiquid-crystal display
The invention relates to a multifunctional carrier soil conductivity real-time detector, wherein it is formed by electrode sensor unit, data collecting-processing unit; said electrode sensor unit is formed by support, wheel, and post electrode, while the wheel and post electrode are fixed on the support; the data collecting-processing unit comprises power convert circuit, signal convert-amplify circuit, A / D converter, processor and liquid crystal display circuit; the data collecting-processing unit via one multi-core cable is connected ton the electrodes of electric sensor. The invention uses current-voltage four-end method, and six-post-electrode design, without less damage on soil; and it uses separated design, therefore, even the soil end of electrode is damaged, it can replace accident part easily.
Owner:CHINA AGRI UNIV
Method for measuring horizontal visibility based on CCD (Charge Coupled Device) laser radar
ActiveCN102621102AImprove photoelectric conversion efficiencyImprove time resolutionScattering properties measurementsCcd cameraEcho signal
The invention discloses a method for measuring atmospheric horizontal visibility based on a CCD (Charge Coupled Device) laser radar. The method involves the following devices: a laser transmitting part, an optical receiving part and a data collecting part, wherein the laser transmitting part comprises a laser device and a collimator; the optical receiving part mainly comprises a CCD camera and an optical filter, and the optical filter is positioned in front of a lens of the CCD camera; the data collecting part comprises a computer, and the CCD camera is in communication connection with the computer; and the laser device is used for transmitting laser to the atmospheric air horizontally, a laser path is free from blocking objects, a micro angle is formed between the CCD camera and the laser device, laser echo signals are fully received by the CCD camera, and the atmospheric horizontal visibility can be obtained after laser echo images are collected and processed by the computer. According to the invention, the devices involved in the method can continuously work day and night and have the advantages of high detecting speed, simple structure, small size, light weight, convenience for carrying and moving and wide application prospect.
Owner:ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Spectrum reflectivity measurer
InactiveCN101144778ASimplify operation stepsGuaranteed accuracyColor/spectral properties measurementsLiquid-crystal displayElectricity
The invention relates to a spectral reflectivity measuring device, which comprises an optical unit, a controlling unit and an ultrasonic ranging unit. Four optical transmitting channels are arranged in the optical unit, two upper channels adopt a cosine scatterer as an optical window, and two lower channels adopt a K9 material optical glass window. The optical window, an optical filter and a plano-convex lens are arranged at one end of the optical unit body, a sealing gasket is arranged on the both sides of the optical filter and the plano-convex lens, and a photosensor is arranged at the focal point of the other end of the plano-convex lens of the optical unit body. The controlling unit comprises a sensor, an amplifier, a digital / analog converter, a single-chip microcomputer, a U disk, a liquid crystal display and a keyboard, etc. The ultrasonic ranging unit consists of an ultrasonic sensing module based on the piezoelectricity principle. The invention achieves that the reflected light of the plant canopy and the radiating light of the sun are measured synchronously, the operational procedure of the measurement is simplified, and the measurement height is kept consistent automatically.
Owner:CHINA AGRI UNIV
Extra-high voltage reference capacitor
ActiveCN101183121ASolve the problem of inconvenient transportationIncrease the voltage coefficientResistance/reactance/impedenceCapacitorsPositive pressureLow voltage
The present invention is an ultra-high voltage standard capacitor, which is an upright structure in which both the high-voltage electrode and the low-voltage electrode are fixed in the pressure vessel tank at the bottom with an insulating support, and overcomes the influence of the increase of the voltage level of the standard capacitor on the increase of its voltage coefficient. problem; for the field test structure, the present invention divides the standard capacitor into three independently sealed air chambers, which solves the inconvenient transportation problem of large-scale test equipment, so as to be used for field test and detection. When the present invention is used for UHV standard capacitors The insulation level is extremely high, the short-term power frequency voltage withstand capacity can exceed 1600kV, the long-term rated working voltage exceeds 1200kV, and the voltage coefficient is better than 2×10-6. The invention can also be used in the production of standard capacitors with a rated working voltage of less than 1600kV voltage level.
Owner:WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
High-speed wireless seismic prospecting data collector
InactiveCN1472546AFast data transferImprove signal qualitySeismic signal transmissionSignal qualityRadio channel
The device applies spread spectrum data station, earthquake prospection wave detector with three-conponent digit, data collecting station set between abovesaid station and detector. The connections for signal are follows. The data output line of the data collecting station is connected to data input line of the spread spectrum data station. The data is transmitted to recording centre via the spread spectrum data station as per time sequence after the data of detector is buffer-stored by the data collecting station so that the system can send 3000 route earthquake data collected from 176 data collecting station to the recording centre by only occupying one radio channel.
Owner:中国石油化工股份有限公司石油勘探开发研究院南京石油物探研究所
High voltage crosslinked cable test power supply based on FPGA
InactiveCN103823092AReduce capacity requirementsDoes not expand the point of failureElectrical measurement instrument detailsTesting circuitsTest powerFrequency changer
The invention provides a high voltage crosslinked cable test power supply based on the FPGA. A control relay, a rectifying circuit, a filter circuit, an inverter circuit, an exciting transformer and a resonance electric reactor are sequentially connected to form the high voltage crosslinked cable test power supply. The inverter circuit is controlled by the control circuit. An alternating-current power supply outputs adjustable alternating voltages through a frequency converter and inputs the adjustable alternating voltages to the exciting transformer. The adjustable alternating voltages are inputted into a resonance circuit composed of the resonance electric reactor, a cable tested product capacitor and the exciting transformer after being boosted. The high voltage crosslinked cable test power supply can conduct withstand voltage tests on XLPE cables with different lengths by means of the series resonance circuit, intelligent control over automatic frequency tracking is achieved through the FPGA so that the control accuracy of the system can be improved, the high voltage crosslinked cable test power supply has the advantages of being light in weight, small in requirement for power supply capacity, simple in control structure, convenient to control, quite suitable for field use and the like, the voltage borne on a cable tested product stably rises to 18 kV under the condition that the output power is 6 kW, and the withstand voltage test requirement for the crosslinked polyethylene cable under the voltage below 18 kV is met.
Owner:南京冠亚电源设备有限公司
Kit for rapidly detecting pathogeny of acute hepatopancreatic necrosis disease of prawns and application of kit
InactiveCN105316422AStrong specificityHigh sensitivityMicrobiological testing/measurementDiseasePositive control
The invention relates to a kit for rapidly detecting pathogeny of acute hepatopancreatic necrosis disease of prawns and application of the kit, belonging to technical field of biotechnology. The kit comprises an LAMP primer group, DNA polymerase, LAMP reaction liquid, a positive control and a negative control. The kit further comprises a color developing agent. The LAMP primer group comprises a pair of outer primers, a pair of inner primers and a pair of loop primers. The application of the kit in the pathogeny detection of the acute hepatopancreatic necrosis disease of the prawns comprises the steps of purifying and separating vibrio strains, preparing vibrio DNA, carrying out constant temperature gene amplification reaction, and carrying out result judgment by virtue of a turbidity meter or an ESE-Quant Tube Scanner. The kit has the advantages of good specificity, high sensitivity, simple operation, reliable result and the like, and is applicable to the rapid detection of prawn farming sites.
Owner:SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
Rapid and sensitive method for detecting melamine
InactiveCN101726533ASmall and portableFast measurementMaterial analysis by electric/magnetic meansPretreatment methodIon-mobility spectrometry
The invention discloses a new method for detecting melamine. Based on an ion mobility spectrometry technology, by using the ion mobility spectrometry as a detection means and combining a simple solvent extraction pretreatment method, the method has high detection speed and sensitivity and needs only 0.5 minute for analysis and less than 5 minutes for pretreatment; and the detection limit can reach 50ppb.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Cold rolling direct spraying method of emulsified liquid
ActiveCN103567237AEqual thicknessImprove stabilityWork treatment devicesMetal rolling arrangementsSpray nozzleStrip steel
The invention discloses a cold rolling direct spraying method of the emulsified liquid. The emulsified liquid is sprayed towards the upper surface and the lower surface of strip steel through an upper spray nozzle which is arranged on the upper surface of the strip steel and a lower spray nozzle which is arranged on the lower surface of the strip steel; the distance s1 between the upper spray nozzle and the center of a rolling mill and the spraying amount F1 of the upper spray nozzle are utilized as a reference target; the optimal distance s2* between the lower spray nozzle and the center of the rolling mill and the spraying amount F2 of the lower spray nozzle are determined according to the reference target; the flow of the emulsified liquid is controlled by flow valves which are arranged on branch pipelines of the upper spray nozzle and the lower spray nozzle. According to the technical scheme of the cold rolling direct spraying method of the emulsified liquid, oil films which are arranged on the upper surface and the lower surface of the strip steel can have the equal thickness due to the model calculation and the flow valves and accordingly the problems of the insufficient lubrication, the lubrication characteristic difference between the upper surface and the lower surface and the like caused by the emulsified liquid dripping loss of the lower surface of the strip steel are solved, the same lubrication condition in the rolling areas corresponding to an upper working roll and a lower working roll is achieved, the stability of the rolling process is improved, the transformed scale is small, and the field operation is convenient.
Owner:BAOSHAN IRON & STEEL CO LTD +1
Rapid detecting method of sulphate reducing bacteria and kit thereof
ActiveCN103983636AShorten detection timeEliminate distractionsMaterial analysis by observing effect on chemical indicatorImpurityBacterial lysate
The invention relates to the technical field of detecting and processing of oilfield water samples, and in particular relates to a rapid detecting method of sulphate reducing bacteria and a kit for detecting. The rapid detecting method disclosed by the invention comprises the following steps: firstly, pre-processing and removing impurities in a water sample to be tested, then adding a bacteria lysis solution into the water sample to sufficiently split and release APS thallus in the water sample, adding a reaction substrate, catalyzing the reaction substrate by using enzyme to carry out oxidization-reduction reaction, adding a colour developing substrate into the reaction system, combining the reaction product catalyzed by enzyme with the colour developing substrate, and thus obtaining a coloured reaction end-product. The content of SRB (Sulphate Reducing Bacteria) in the water sample to be tested is obtained according to reaction colours. According to the invention, a device for detecting SRB and a reagent are standardized to form a kit according to the detection method, so that various construction fields are convenient to detect; the rapid detecting method of sulphate reducing bacteria and the kit disclosed by the invention are capable of effectively eliminating impurity interference in the oilfield water sample, greatly shortening the detection period and greatly increasing the detection accuracy and sensibility.
Owner:CHINA PETROLEUM & CHEM CORP +1
Neoprene adhesive subjected to secondary graft modification and preparation method of neoprene adhesive
InactiveCN103865451AImprove environmental protection requirementsImprove performanceGraft polymer adhesivesShoe industryPolymer science
The invention discloses a neoprene adhesive subjected to secondary graft modification and a preparation method of the neoprene adhesive. The neoprene adhesive comprises the following raw materials (in percentage by weight): 10%-15% of neoprene, 6.3%-13% of grafted monomers, 0.1%-0.5% of initiating agents, 5%-10% of acetone, 15%-30% of butanone, 10%-20% of ethyl acetate, 10%-20% of dimethyl carbonate, 8%-20% of methyl cyclohexane, 5%-10% of thickening agents and 0.3%-1% of terminating agents. The preparation method comprises the following steps of sequentially adding acetone, butanone, ethyl acetate, dimethyl carbonate and methyl cyclohexane, and uniformly mixing and stirring; adding neoprene, and stirring for 2-4 hours; adding a part of the initiating agents, further stirring, then dropping first grafted monomers to react for 0.5-1 hour, and adding second grafted monomers and the rest of initiating agents; adding a terminating agent, and then adding tackifying resin; regulating viscosity, and then discharging. The neoprene adhesive disclosed by the invention is subjected to the secondary graft modification through multiple monomers. The product has the characteristics of high comprehensive property and good environmental friendliness and is suitable for industries, such as furniture making, shoe making and luggage.
Owner:ZHUHAI YUTIAN CHEM PROD
Method and system for acquiring and processing business department customer evaluation information
InactiveCN1652127ARealize the workloadGuarantee authenticitySpecial data processing applicationsComputer scienceInformation acquisition
The present invention relates to a business department customer evaluation information acquisition and processing method and its system. It is characterized by that several satisfaction degree evaluation keys are set on electronic clerk plate, in the course of handling service the evaluation key selected by customer can be pressed down, the evaluation information can be inputted the electronic clerk plate, then the evaluation information stored in the electronic clerk plate can be transferred into management layer computer by means of handset o other wired or wireless mode, then the management layer computer can be used for accounting, analyzing and comparing and appraising the evaluation informations and creating data base, so that the comprehensive evaluation of customers to every clerk and business department can be obtained.
Owner:罗杰
Structural pressure-sensitive adhesive, structural pressure-sensitive adhesive tape and preparation method of structural pressure-sensitive adhesive and structural pressure-sensitive adhesive tape
ActiveCN102234497ASensitive to pressureWith structural adhesive propertiesFilm/foil adhesivesEster polymer adhesivesEpoxyCarvacryl acetate
The invention discloses a structural pressure-sensitive adhesive, a structural pressure-sensitive adhesive tape and a preparation method of the structural pressure-sensitive adhesive and the structural pressure-sensitive adhesive tape. The structural pressure-sensitive adhesive comprises a constituent A and a constituent B. The constituent A is obtained by polymerizing acrylic acid-2-ethylhexyl ester, butyl acrylate, vinylacetate, methyl methacrylate, acrylic acid, glycerol ester of hydrogenated rosin, dibenzoyl peroxide, ethyl acetate and epoxy resin in a reactor. The constituent A is coatedon a base material to manufacture a pressure-sensitive adhesive tape; the constituent B, which is polyfunctional organic amine epoxy hardener 2,4,6-tri(dimethylamino methyl)phenol, is painted on the surface of a pasted object; the pressure-sensitive adhesive tape is pasted on the surface of the pasted object to form the structural pressure-sensitive adhesive tape. The structural pressure-sensitive adhesive tape disclosed by the invention has pressure sensitivity at the beginning of use, and has the performances of structural adhesives at the later stage of use; the proportion of the tackinessagent A and the curing agent B is unnecessary to be determined, so the adhesive tape is convenient to use; in addition, the bonding strength is large, thus the structural pressure-sensitive adhesive tap is very suitable for field application.
Owner:中国航天科技集团公司第四研究院第四十二所
Method for rapidly detecting drugs in saliva
ActiveCN106198702AEasy to measureGood reliabilityMaterial analysis by electric/magnetic meansForensic scienceBiology
The invention discloses a method for rapidly detecting drugs in saliva. The method comprises the steps of fetching a saliva sample, adding an alkali solution into the saliva sample so as to adjust the pH value of the saliva sample, then, measuring the saliva liquor at a sampling site of a sample introduction sheet, then, adding a certain volume of auxiliary chemical additive into the saliva sample, and feeding the sample introduction sheet to a pyrolysis sample introduction device of an ion mobility spectrometry detector. Analysis and detection are carried out after pyrolysis, and analysis and detection results are output. The measuring detection limit can reach the magnitude not larger than 1ng (concentration not larger than 0.1ppm). The analysis time for an individual sample is shorter than 5S, and software automatically outputs the detection result. According to the method, the measuring method is simple, convenient, rapid and efficient and is good in reliability. In view of oral drug taking and drug abusing cases, the ion mobility spectrometry detector can be used for completely achieving rapid examination through detecting drug ingredients in the saliva by using the method disclosed by the invention. On the basis of applied research requirements in the aspect of forensic sciences, software control instruments can implement an alarm mode according to drug mobility time.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Frozen soil depth sensor
InactiveCN105783838ASimple structureLow costCryogenic temperature measurementCryogenicsAgricultural engineeringSoil depth
The invention discloses a frozen soil depth sensor. The frozen soil depth sensor comprises a controller, a temperature acquisition device, a protective tube, a waterproof sealed box, an encapsulating material and a control cable, wherein the controller is installed in the waterproof sealed box; the waterproof sealed box is fixedly arranged at one end of the protective tube; the temperature acquisition device is integrally encapsulated in a groove at one side of the protective tube through the encapsulating material, the other end of the protective tube is embedded into soil, the temperature acquisition device and the protective tube are embedded into the measured soil together; and the control cable is connected between the controller and the temperature acquisition device.
Owner:哈尔滨今星微电子科技有限公司 +1
Portable forward osmosis water purification bag and using and cleaning method thereof
InactiveCN104478042AEffective for repeated useGuaranteed to be used repeatedlySemi-permeable membranesWater/sewage treatment bu osmosis/dialysisWater qualityCleaning methods
The invention belongs to the technical field of water purification, and particularly relates to a portable forward osmosis water purification bag and a using and cleaning method thereof. The portable forward osmosis water purification bag comprises an outer bag and an inner bag, wherein the outer bag is used for containing raw water; the inner bag is arranged in the outer bag and used for containing an absorbing liquid; the outer bag is made of a waterproof material; the inner bag is made of a forward osmosis membrane material; and furthermore, water inlets and water outlets are respectively formed in the outer bag and the inner bag in a staggered manner. According to the portable forward osmosis water purification bag, emergency drinking water can be provided at high efficiency; with a cross-flow cleaning technology as a support, the related structure capable of achieving forward-osmosis cross-flow cleaning is designed; the pollutants intercepted on the surface of the forward osmosis membrane surface are effectively removed; the service life of the water purification bag is prolonged; and the portable forward osmosis water purification bag is suitable for field application, and especially suitable for the conditions of army officers and soldiers or personnel for executing the task outdoors.
Owner:LOGISTICAL ENGINEERING UNIVERSITY OF PLA
Plasmodium antibody colloidal gold detection kit and preparation method thereof
ActiveCN102590522AStrong specificityNo added complexityMaterial analysisAgainst vector-borne diseasesPaper sheetQuality control
The invention relates to a plasmodium antibody colloidal gold detection kit and a preparation method thereof. The plasmodium antibody colloidal gold detection kit comprises reagent strips, namely a piece of sample filter paper, an immune colloidal gold paper sheet, an immune nitrocellulose membrane and a piece of water absorption paper sequentially from a sample injection end, wherein an HRPII-pLDH bispecific monoclonal antibody marked by colloidal gold is wrapped on the immune colloidal gold paper sheet; an anti-HRPII specific monoclonal antibody and an anti-pLDH specific monoclonal antibody are sprayed in a detection region (T) of the nitrocellulose membrane; and goat-anti-mouse immune globulin (IgG) is sprayed in a quality control region (C) of the nitrocellulose membrane. The plasmodium antibody colloidal gold detection kit can detect Malaria sensitively, specifically and quickly.
Owner:SHANGHAI CHEMTRON BIOTECH
Movable multi-functional tool kit
PendingCN106671047AEasy to moveReduce labor intensityWork tools storageOther workshop equipmentEngineeringMultiple function
Owner:杨木超
Well-killing method after gas drilling blowout
ActiveCN105672927AEffective back pressureReduced operating requirementsLiquid/gas jet drillingFlushingWell killWell drilling
Provided is a well-killing method after gas drilling blowout. The method comprises following steps: installing a conventional drilling pump and a throttle manifold; connecting the other pressure-regulating pump to a valve of the throttle manifold; calculating allowable pressure of the maximum wellhead; regulating wellhead pressure to the allowable pressure of maximum wellhead by the throttle valve and by connecting the pressure-regulating pump of the throttle manifold; opening the drilling pump for well killing; recording the time well killing liquid takes to reach a drill bore and resultant annulus pressure of a hydrostatic column; and determining relations of pressure of throttle valve and pressure of the hydrostatic column and formation pressure in order to decide the throttle pressure regulation or redesign of well killing. The well-killing method after gas drilling blowout is very suitable for a working condition without any drilling fluid in a well so that the problem that scrubbed gas is throttled with difficulty during the initial phase of well killing is effectively solved. Therefore, establishment of pressure of the hydrostatic column for killing fluid in a shaft is accelerated and well-killing success is achieved. The well-killing method after gas drilling blowout does not need special equipment, is easily operated and suitable for on-site application.
Owner:CHINA PETROCHEMICAL CORP +3
Portable fruit hardness detecting instrument
PendingCN109632543ASolve the problem of inedibleAchieve consistencyInvestigating material hardnessElectricityNon destructive
Owner:ZHEJIANG UNIV
Digital nucleic acid amplification detection method and integrated detection system based on CRISPR and Cas
ActiveCN112029653ASensitive highStrong specificityBioreactor/fermenter combinationsHeating or cooling apparatusSignal detectorAbsolute quantification
The invention discloses a digital nucleic acid amplification detection method and an integrated detection system based on CRISPR / Cas. The integrated detection system comprises an integrated reaction chip, a temperature control module, a light source and an optical signal detector. The method comprises the following steps of uniformly dividing a nucleic acid amplification system into amplificationmicro-droplets, mixing the amplification micro-droplets subjected to digital nucleic acid amplification with detection micro-droplets containing a CRISPR / Cas system to perform a CRISPR reaction, and detecting an optical signal to realize high-specificity detection of a target object after the reaction is finished, so that the concentration or copy number of nucleic acid molecules in a to-be-detected sample is obtained, and high-sensitivity absolute quantitative detection of the target object is realized. The method has the characteristic of absolute quantification of a digital amplification technology and the advantages of high sensitivity and high specificity of CRISPR / Cas detection, the detection process is integrated on one chip, the operation steps are simplified, and besides, the problems of cross contamination and the like are avoided.
Owner:ZHEJIANG UNIV
Method for cooperatively regulating and controlling the phase state of natural gas hydrate in reservoir through drilling fluid additive and temperature and pressure field
ActiveCN112347675ALittle change in saturationSimple processFluid removalArtificial lifeThermodynamicsWell drilling
The invention relates to a method for cooperatively regulating and controlling the phase state of a natural gas hydrate in a reservoir through a drilling fluid additive and a temperature and pressurefield, and belongs to the technical field of natural gas hydrate development. The method comprises the following steps of calculating dynamic distribution rules of a reservoir temperature field and anatural gas hydrate decomposition interface under the conditions of different drilling fluid displacements, injection temperatures and drilling fluid additive concentrations, and drawing a relation curve of the drilling fluid additive concentrations, the injection temperatures and the displacements with the saturation of the reservoir natural gas hydrate; and obtaining an optimal combination of drilling fluid additive concentration, injection temperature and displacement by utilizing a particle swarm algorithm, so that the saturation change of the reservoir natural gas hydrate is minimum. Accurate regulation and control of the reservoir natural gas hydrate phase state of deep-sea shallow-layer complex-structure well drilling can be achieved, and method guidance is provided for inhibiting reservoir natural gas hydrate decomposition in the drilling process.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA) +2
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