Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
36results about How to "Experimental repeatability is high" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Liquefied natural gas (LNG) drain diffusion and pool fire combustion simulated experimental platform and LNG drain diffusion and pool fire combustion simulated experimental method
ActiveCN102879305AAvoid suffocation damageAvoid cold damageSurface/boundary effectData acquisitionEngineering
The invention relates to a liquefied natural gas (LNG) drain diffusion and pool fire combustion simulated experimental platform and an LNG drain diffusion and pool fire combustion simulated experimental method. The platform comprises an experimental system, a testing system and a control system, wherein the experimental system consists of an LNG storage tank, heat-insulation pipes, experimental devices and an anti-explosion isolating wall; the testing system consists of an electronic balance, an ignition system, a methane concentration detector, a thermocouple tree, a data acquirer and a camera; and the control system consists of a programmable logic controller (PLC) system, various display instruments and a control valve. By designing an angle-adjustable LNG surface spreading experimental device with a changeable surface material, spreading and gasification diffusion experimental simulation of LNG on surfaces of different substances and at different flowing speeds can be carried out; and by matching the ignition system and the methane concentration detector, LNG gas cloud concentration change monitoring and gas cloud ignition can be realized, and data and images are acquired automatically. The platform has the advantages of short experimental time, low cost, high experimental efficiency and the like. By the design, experimental steps are less, experimental safety is guaranteed under the condition of severe monitoring and control, the platform is easy and convenient to operate, and experimental repeatability is high.
Owner:应急管理部天津消防研究所
Constant volume combustion bomb and combustion device with same
InactiveCN105372072AAvoid burnsTake a seat quicklyInternal-combustion engine testingCombustion systemCoupling
The invention provides a constant volume combustion bomb. The constant volume combustion bomb comprises a bomb body which is internally provided with a cavity serving as a combustion cavity and is in the shape of a cube. The bomb body has six working surfaces serving as main mounting surfaces and auxiliary mounting surfaces formed at eight corners. The main mounting surfaces and the auxiliary mounting surfaces are provided with main mounting holes and auxiliary mounting holes. The constant volume combustion bomb further comprises a main mounting base accommodated in two opposite main mounting holes, a glass mounting base accommodated in another two opposite main mounting holes, a magnetic coupling fan accommodated in the last two opposite main mounting holes and used for driving mixed gas in the combustion cavity of the bomb body rotationally to make the mixed gas form a vortex, and auxiliary mounting bases accommodated in the auxiliary mounting holes to measure the pressure and temperature in the combustion cavity of the bomb body. The invention also provides the corresponding combustion system. The device has a structure adaptive to the combustion conditions of an internal combustion engine, allows comprehensive observation of a combustion process and thus is suitable for premixed combustion heating type constant volume bomb spray combustion diagnosis experiments with various research requirements.
Owner:HUAZHONG UNIV OF SCI & TECH
Nitrogen doped fluorescent carbon quantum dot and preparation method thereof
ActiveCN108456519AAvoid expensive, less-obtainable problemsEasy to operateNanoopticsFluorescence/phosphorescenceCarboxymethyl celluloseMaterials preparation
The invention belongs to the technical field of nano material preparation and metal ion detection, and particularly relates to a nitrogen doped fluorescent carbon quantum dot and a preparation methodthereof. The preparation method for the nitrogen doped fluorescent carbon quantum dot comprises the following steps: preparing a mixed solution of carboxymethyl cellulose and ethanediamine; putting the mixed solution in a high-pressure reaction kettle to perform hydrothermal reaction to obtain a reaction solution; performing ultrasonic treatment on the reaction solution, centrifuging, and filtering to obtain filtrate; using super-pure water to perform dialysis treatment on filtrate, and freezing and drying a solid product obtained by dialysis to obtain powder, thereby obtaining the nitrogen doped fluorescent carbon quantum dot. The method is simple in preparation process, is green and environmentally friendly, is low in cost, is simple in equipment and is suitable for large-scale production; and the prepared carbon quantum dot has excellent performances of being good in water solubility, stable in fluorescence property, uniform in grain size, non-toxic and harmless, biocompatible and the like, so that the application field of the carbon quantum dot is expanded.
Owner:DALIAN POLYTECHNIC UNIVERSITY
Quantum dot light diffusing agent and preparation method thereof
ActiveCN110643349AImprove the stability of useExpand the scope of applicationStampsDiffusing elementsMethyl methacrylateQuantum dot
The invention provides a quantum dot light diffusing agent and a preparation method thereof. The preparation method includes the steps: performing pretreatment on polymethyl methacrylate to obtain a polymethyl methacrylate dispersion liquid; dissolving quantum dots and an additive in a cosolvent to obtain a mixed solution A; mixing the mixed solution A and the polymethyl methacrylate dispersion liquid to obtain a mixed solution B, adjusting the temperature and pH value of the mixed solution B under the protection of an inert gas, performing full stirring, and performing purification treatmentto obtain a microsphere structure containing the quantum dots; and drying the microsphere structure, and performing grinding to obtain the quantum dot light diffusing agent. According to the method, the polymer material is used to wrap the quantum dots and the additive, so that the stability of the quantum dots during the processing and aging of an optical function board can be improved, and the application range of the quantum dot light diffusing agent can be improved; and the method has a simple preparation process, low equipment costs and high experimental repeatability, and facilitates industrial large-scale production and promotion.
Owner:广纳珈源(广州)科技有限公司
Fractal intersection fracture seepage flow experimental system and experimental method
InactiveCN108318400AControl water levelReal-time and accurate displayPermeability/surface area analysisPath lengthParallel plate
The invention discloses a fractal intersection fracture seepage flow experimental system and an experimental method and belongs to the field of geotechnical engineering. The experimental system comprises a water storage tank, a water guide pipe and a water head tank, wherein a water inlet is formed in the water head tank; water flow passes through the water inlet and then enters an experimental main body; the experimental main body comprises an intersectional hollow flow channel slot and a cover plate thereon; a fractal intersection fracture parallel-plate physical model for 3D printing is arranged in the hollow flow channel slot; the model is made by constructing a rough fractal curve based on a fractal function, establishing a three-dimensional stereoscopic model according to the curve by virtue of software and printing by virtue of 3D printing equipment; the model comprises rough fractures and smooth fractures intersecting with one another; the rough fractures and smooth fractures have the same seepage path length; the water outlet is connected with the water collection tank; a water level monitor is arranged above the water collection tank; the water collection tank is connected with the water storage tank by virtue of a communicating pipe; the experimental system further comprises an intelligent regulation device; a pressure sensor and the water level monitor are respectively connected with the intelligent regulation device. The experimental system is applicable to study on the fractal intersection fracture seepage flow experiment.
Owner:SICHUAN UNIV
Method for manufacturing optical micro-nano pattern on surface of lithium niobate film
ActiveCN110850688AImprove Exposure AccuracyReliable technical solutions for exposing HSQPhotomechanical exposure apparatusMicrolithography exposure apparatusSputteringNano structuring
The invention relates to a method for manufacturing an optical micro-nano pattern on the surface of a lithium niobate film, which belongs to the technical field of micro-nano processing. The method comprises the following steps: manufacturing a layout required by electron beam exposure; cleaning and drying a lithium niobate substrate; sputtering a metal conductive layer on the lithium niobate substrate; spin-coating the lithium niobate substrate with electron beam glue; carrying out first electron beam exposure on the lithium niobate substrate to manufacture a mark; carrying out developing andfixing; carrying out magnetron sputtering of metal on the lithium niobate substrate to manufacture a metal mark; removing the photoresist and stripping a metal-masked pattern to prepare a lithium niobate sheet with a metal bulge mark; spin-coating the lithium niobate sheet with electron beam glue; carrying out second electron beam exposure on the lithium niobate sheet to manufacture a pattern; carrying out developing and fixing; and carrying out pattern transfer to form a micro-nano structure. By means of the method, a pattern with a steep side wall can be manufactured on a non-conductive lithium niobate material, a micro-nano pattern with the size smaller than 900nm can be manufactured, the manufactured optical waveguide is large in refractive index contrast ratio, the size of an opticaldevice can be reduced, and the performance of the optical device can be improved.
Owner:TSINGHUA UNIV +1
Method for implementing image transfer on semiconductor material by anodised aluminum template
InactiveCN101499417AReduce manufacturing costEasy to makeSemiconductor/solid-state device manufacturingElectrical conductorSemiconductor materials
A method using a porous alumina template for realizing the pattern transfer of semiconductor materials includes the following steps: 1. an aluminum sheet is gotten, and then cleaning and polishing are carried out; 2 a method for anodizing alumina is used for conducting a primary anodization and manufacturing a porous alumina film; 3. the porous alumina film which is formed at the primary anodization is dissolved; 4. the method for anodizing alumina is used for conducting a secondary anodization and manufacturing the porous alumina film; 5. the porous alumina film is separated from the aluminum sheet; 6. the porous alumina film is reversely affixed on a semiconductor material substrate and then dried; 7. annealing is carried out in an annealing furnace for improving the flatness of the film; 8. hole forming is carried out in phosphoric acid solution and the hole is put through in the two directions; 9. the porous alumina film is used as a mask for etching the semiconductor material with a drying method; and 10. the alumina film is dissolved in sodium hydroxide solution.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
LNG leakage water curtain inhibition experiment method
ActiveCN104297424ARealize remote controlAvoid low temperature damageMaterial analysisData acquisitionEnvironmental engineering
The invention relates to an LNG leakage water curtain inhibition experiment method which aims at mainly solving the problem of the blank of the LNG leakage water curtain inhibition experiment method in the prior art. According to the technical scheme adopted by the invention for well solving the problem, due to the adoption of the LNG leakage water curtain inhibition experiment method, LNG leakage water curtain inhibition experiment is implemented by virtue of an LNG leakage water curtain inhibition experiment device; the experiment method comprises the following steps: (1) guiding LNG in an LNG storage tank into a leakage tank; (2) opening a leakage nozzle and spraying the LNG out of the leakage nozzle; (3) starting a data acquisition system, carrying out data acquisition and recording image; (4) starting a water curtain system, spraying water out of a water curtain nozzle to form a water curtain, and carrying out data acquisition by virtue of the data acquisition system and recording the image; and (5) sequentially closing the leakage system, the water curtain system and the data acquisition system after the data collected by a monitoring point array is stable so as to end the experiment. The method can be applied to the LNG leakage water curtain inhibition experiment.
Owner:CHINA PETROLEUM & CHEM CORP QINGDAO RES INST OF SAFETY ENG +1
Sensing mechanism of two-dimensional airfoil model
ActiveCN111579204AIntegrity guaranteedSmoothness is not destroyedAerodynamic testingMultiple fluid pressure valves simultaneous measurementSurface pressureMechanical engineering
The invention relates to a sensing mechanism of a two-dimensional airfoil model. The sensing mechanism comprises a pressure sensor group, a plurality of first conduits, a second conduit and a cavity,wherein the pressure sensor group is vertically fixed in a mounting hole in a surface of the two-dimensional airfoil model, and a pressure measuring surface of each pressure sensor in the pressure sensor group is vertical to the surface of the two-dimensional airfoil model; a plurality of mounting holes perpendicular to the surface of the two-dimensional airfoil model are formed in the surface ofthe two-dimensional airfoil model; the cavity is fixed in the two-dimensional airfoil model; reference pressure ends of the pressure sensors in the pressure sensor group are connected to the cavity through the first conduits, and the plurality of pressure sensors in the pressure sensor group are in one-to-one correspondence with the plurality of first conduits; the cavity is connected with the first end of the second conduit, and the second end of the second conduit is arranged in the atmosphere outside the two-dimensional airfoil model. According to the mechanism disclosed in the invention, measurement precision of the two-dimensional airfoil surface pressure distribution can be improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Apparatus and method to prepare methane hydrates under normal pressure
PendingCN109735374AFast preparationSimple and fast operationGaseous fuelsProcess engineeringRepeatability
The invention discloses an apparatus to prepare methane hydrates under normal pressure. The apparatus comprises: a foaming unit for generating foam; a liquid supply unit for providing a low-temperature methane liquid; a reactor unit having the upper end communicated with the foaming unit and the lower end communicated with the liquid supply unit, and used for generating methane hydrates; a data acquisition unit for acquiring interior temperature and resistivity of the reactor unit. The apparatus herein has the advantages that the low-temperature methane liquid is introduced into a storage tankunder the normal pressure and low temperature, high-ratio foam liquid is generated via the foaming device, and methane hydrates are generated during the process where the low-temperature methane vapor moves up and gains contact with the foam to give rise to heat and mass transfer; the whole experimental process is simple to perform, has low experimental environment requirements, is suitable for quick preparation of methane hydrates under normal pressure, and has the advantages of low time consumption, low cost, and high experimental repeatability.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Liquefied natural gas (LNG) drain diffusion and pool fire combustion simulated experimental platform and LNG drain diffusion and pool fire combustion simulated experimental method
ActiveCN102879305BAvoid suffocation damageAvoid cold damageSurface/boundary effectData acquisitionEngineering
Owner:应急管理部天津消防研究所
Method for detecting comprehensive content of soil heavy metal by luminous bacteria and application thereof
PendingCN110987910AEasy to operateSingle equipmentChemiluminescene/bioluminescenceToxicitySoil science
The invention, which belongs to the field of environmental detection by a biological method, discloses a method for detecting the comprehensive content of heavy metal in soil by luminous bacteria andapplication thereof. The method comprises the following steps: removing impurities from a collected soil sample, carrying out air drying, grinding and sieving, adding water to prepare a soil suspension, and carrying out oscillation, standing, filtration and centrifugation to obtain a to-be-detected sample; and determining a relation between the relative luminous intensity of the vibrio fischeri and the concentration of the heavy metal ions by using the vibrio fischeri with low cost in luminous bacteria and establishing a mathematical model to enable each relative luminous intensity to have a heavy metal ion toxicity interval corresponding to the relative luminous intensity, thereby conveniently and quickly detecting the heavy metal pollution of the soil. The method is simple to operate, single in equipment, low in cost and wide in applicability, and has important significance in soil pollution detection.
Owner:HUAQIAO UNIVERSITY
Under-pressure LNG flash experimental method
ActiveCN104792814ARealize automatic collectionReduce gasification lossInvestigating phase/state changeExperimental methodsEngineering
The invention discloses an under-pressure LNG flash experimental method. The experimental method based on an under-pressure LNG flash experimental platform can be used for processes such as LNG pressure adjustment, LNG jet control and LNG liquid bath measurement and can be further used for conducting a research on a liquid bath scale by under-pressure LNG under free jet or hindered jet under the conditions of different jet apertures, different angles, different heights, different jet distances and the like by adjusting the jet apertures of the LNG nozzles, the bracket angles and heights, and the distances of barriers and the like according to the experimental objective. The experimental method disclosed by the invention can be used for realizing experimental remote operation and data automatic acquisition and has the characteristics of being safe and reliable and high in experimental repeatability. In addition, the method is based on an under-pressure LNG flash experimental platform, and an insulating liquid receiving disc is adopted, so that the gasifying loss of the LNG in the process of forming the liquid bath can be reduced, and therefore, the measurement result is relatively accurate.
Owner:CHINA PETROLEUM & CHEM CORP QINGDAO RES INST OF SAFETY ENG +1
Carbon@SiOx/C@carbon nanotube composite material and preparation method thereof
ActiveCN112678806ASmall volume expansionImprove conductivityMaterial nanotechnologyCell electrodesTube furnaceCarbonization
The invention provides a carbon@SiOx / C@carbon nanotube composite material and a preparation method thereof. The preparation method comprises the specific steps: S1, dispersing a silicon source and carbon nanotubes in a mixed solvent, adding ammonia water, and obtaining an organic silicon@carbon nanotube composite material after centrifugal drying; and S2, putting the organic silicon@carbon nanotube composite material into a tubular furnace, carrying out primary carbonization in a protective atmosphere, then introducing organic gas for secondary carbonization, and finally cooling to room temperature, so as to obtain the carbon@SiOx / C@carbon nanotube composite material. Organic silicon grows on the carbon nanotubes in situ by a sol-gel method, the prepared carbon@SiOx / C@carbon nanotube composite material comprises internal carbon nanotubes, an external carbon shell and a small-particle SiOx / C layer clamped between the carbon shell and the carbon nanotubes after two times of high-temperature carbonization, the three layers of structures have a synergistic effect, the volume expansion of the composite material is reduced, and the electronic conductivity is improved.
Owner:WUHAN UNIV OF TECH
Washed fabric twisted flatness testing device and method
ActiveCN105258656AIn line with the reality of lifeThe test result is accurateUsing optical meansWrinkle skinEngineering
The present invention discloses a washed fabric twisted flatness testing device and method. An existing washed fabric twisted flatness detection method does not consider the flatness detection of wring after handwash. The stick of the device goes through a second baffle plate to be threadingly connected to a moving cylinder. The moving cylinder is provided with a positioning ring and two symmetrical positioning pins. A static cylinder is fixed at the inner side of the first baffle plate and is provided with a positioning ring and two vertically symmetrical positioning pins. According to the washed fabric twisted flatness testing method, a fabric is ironed and then is cut and soaked in a mixture of water and detergent, then the fabric is taken out and fixed to a fabric twisted simulation device to be twisted, the fabric is expanded and suspended to be dry, a most serious protruding area in a fabric wrinkle image is collected and a pixel point is subjected to filtering transformation and the total entropy of the images of each sample in six filtering directions is obtained, and the sum of the total entropy of the fabric in warp, weft and oblique directions is obtained to be a washed fabric flatness index. According to the device and method, the simulated washed and twisted fabric is subjected to flatness testing, and a fabric flatness evaluation index is obtained.
Owner:HANGZHOU HAICHAO TEXTILE
A nitrogen-doped fluorescent carbon quantum dot and its preparation method
ActiveCN108456519BEasy to operateReduce energy consumptionNanoopticsFluorescence/phosphorescenceCelluloseFreeze-drying
The invention belongs to the technical field of nanometer material preparation and metal ion detection, and in particular relates to a nitrogen-doped fluorescent carbon quantum dot and a preparation method thereof. A method for preparing nitrogen-doped fluorescent carbon quantum dots, comprising configuring a mixed solution of carboxymethyl cellulose and ethylenediamine; placing the mixed solution in a high-pressure reactor for hydrothermal reaction to obtain a reaction solution; Ultrasound, centrifugation, and filtration treatment to obtain a filtrate; dialysis treatment is performed on the filtrate with ultrapure water, and the solid product obtained by dialysis is freeze-dried to powder to obtain the obtained product. The method has simple preparation process, green environmental protection, low cost, simple equipment and is suitable for large-scale production, and the prepared carbon quantum dots have good water solubility, stable fluorescence performance, uniform particle size, non-toxic and harmless, biocompatibility, etc. Excellent performance to expand the application field of carbon quantum dots.
Owner:DALIAN POLYTECHNIC UNIVERSITY
Full-automatic sample slide processing instrument and sample slide processing method
The invention relates to the technical field of biology and particularly relates to a full-automatic sample slide treatment instrument and a sample slide treatment method. The invention provides a full-automatic sample slide treatment instrument. The full-automatic sample slide treatment instrument comprises a workbench, a slide frame for loading a sample slide, a control module and a mechanical arm electrically connected with the control module, wherein the workbench comprises a reaction area, a plurality of reaction tanks are arranged in the reaction area, and one reaction tank is used for containing one reaction liquid; the mechanical arm is arranged on the workbench, and the control module controls the mechanical arm to sequentially feed the slide rack into each reaction tank, so pre-hybridization pretreatment and / or post-hybridization elution of the sample slide are / is automatically completed. During use, reaction liquid is injected into each reaction tank, a sample slide is placed on the slide rack, the slide rack is fixed on the mechanical arm, and then the mechanical arm is controlled by the control module to sequentially feed the slide rack into each reaction tank, so pre-hybridization pretreatment and / or post-hybridization elution of the sample slide are / is automatically completed.
Owner:ZHUHAI LIVZON CYNVENIO DIAGNOSTICS
Test method for twisted flatness of fabric after washing
ActiveCN105258656BIn line with the reality of lifeThe test result is accurateUsing optical meansWrinkle skinEngineering
Owner:HANGZHOU HAICHAO TEXTILE
lng leakage water curtain suppression experimental device
ActiveCN104297006BRealize remote controlAvoid low temperature damageStructural/machines measurementGas cylinderData acquisition
The invention relates to an LNG leakage water curtain restraint experiment device. The LNG leakage water curtain restraint experiment device mainly solves the problem that an LNG leakage water curtain restraint experiment device is not available yet in the prior art. The LNG leakage water curtain restraint experiment device comprises a discharging system, a water curtain system, a data acquisition system and a control system, wherein the discharging system comprises an LNG storage tank, an LNG discharging tank, an inert gas cylinder and a discharging spray head, the water curtain system comprises a water inlet pipeline and a water curtain nozzle, and the data acquisition system comprises a signal processor, a thermocouple, a methane concentration detector, an anemometer, a hygrometer and a high-speed camera. By the adoption of the LNG leakage water curtain restraint experiment device, the problem that LNG leakage water curtain restraint experiment device is not available yet in the prior art is well solved. The LNG leakage water curtain restraint experiment device can be applied to an LNG leakage water curtain restraint experiment.
Owner:CHINA PETROLEUM & CHEM CORP QINGDAO RES INST OF SAFETY ENG +1
Nanocrystalline TaNbTi medium-entropy alloy coating and preparation method thereof
PendingCN114592170AImprove antioxidant capacityAccelerated corrosionNuclear energy generationVacuum evaporation coatingDeposition temperatureOxidation resistant
The invention discloses a nanocrystalline TaNbTi medium-entropy alloy coating and a preparation method thereof. The composition elements Ta, Nb and Ti of the nanocrystalline TaNbTi medium-entropy alloy coating are equal in atomic ratio. A TaNbTi refractory medium-entropy alloy coating is prepared on a single-face polished monocrystalline silicon substrate through a direct-current magnetron sputtering method, a TaNbTi single alloy target serves as a target material, a direct-current power source is adopted, the power is 200 W, the working air pressure set value is 0.3 Pa, the deposition temperature is the room temperature, and the rotating speed of a base disc is 15 r / min. The TaNbTi refractory medium-entropy alloy coating prepared through the direct-current magnetron sputtering technology is compact and uniform in microstructure, few in defect and uniform in internal alloy element distribution, and section crystal grains are columnar nanocrystalline. The TaNbTi refractory medium-entropy alloy coating disclosed by the invention has excellent mechanical property and oxidation resistance.
Owner:CHINA INSTITUTE OF ATOMIC ENERGY +1
A bioreactor that simulates intraocular pressure
ActiveCN109294908BMaintain propertiesPromote generationBioreactor/fermenter combinationsBiological substance pretreatmentsCorneal endothelial cellCell-Extracellular Matrix
The invention discloses a bioreactor for simulating intraocular pressure, which is used for constructing tissue engineering cornea. The reactor provides corneal stromal cells and corneal endothelial cells with mechanical pressure similar to intraocular pressure through continuous circulation of culture fluid, better maintains the characteristics of corneal stromal cells and endothelial cells, promotes the production of extracellular matrix, and improves tissue engineering The transparency and mechanical toughness of the cornea make the tissue-engineered cornea more consistent with the biological characteristics of the cornea in vivo.
Owner:XIAMEN UNIV
Animal sciatic nerve ligation device
ActiveCN113456158ARealize automatic knottingQuantification of ligation strengthSurgeryEngineeringNeuropathic pain
The invention provides an animal sciatic nerve ligation device, and belongs to the field of neuropathic pain model preparation, wherein the animal sciatic nerve ligation device comprises a wire clamping box body, a power module box body and a U-shaped sliding rail; the wire clamping box body and the power module box body are placed on the U-shaped sliding rail and can be fixed on a sliding arm in a sliding mode; the wire clamping box body is connected with a first height adjuster; a first catgut single-end fixing clamp is connected with the first height adjuster; a sliding groove is formed in the power module box and slidably connected with an electric sliding rod placed in the sliding groove; the rear end of the electric sliding rod is connected with a spring, the rear end of the spring is connected with a tension sensor fixed to the rear end of the box body, and the front end of the electric sliding rod is connected with a second height adjuster; and a second catgut single-end fixing clamp is connected with the second height adjuster. According to the animal sciatic nerve ligation device, automatic tension detection, accurate tension control and automatic knotting are achieved through the tension sensor and the electric sliding rod, the position latitude of the equipment module is large, and the animal sciatic nerve ligation device is suitable for being used by different experimental animals.
Owner:FUDAN UNIV
A kind of quantum dot light diffusing agent and preparation method thereof
ActiveCN110643349BImprove the stability of useLow costStampsDiffusing elementsMicrosphereQuantum dot
The invention provides a quantum dot light diffusing agent and a preparation method thereof. The preparation method comprises the steps of: pretreating polymethyl methacrylate to obtain a polymethyl methacrylate dispersion; dissolving quantum dots and additives in a co- In a solvent, a mixed solution A is obtained; the mixed solution A is mixed with the polymethyl methacrylate dispersion to obtain a mixed solution B, and under the protection of an inert gas, the temperature and pH value of the mixed solution B are adjusted, Purify after fully stirring to obtain the microsphere structure containing the quantum dots; dry and grind the microsphere structure to obtain the quantum dot light diffusing agent. The present invention wraps quantum dots and additives with polymer materials, which can improve the stability of quantum dots in the processing and aging process of optical function boards, and improve the application range of quantum dot light diffusing agents; the preparation process is simple and the equipment cost is low. Low, high experimental repeatability, conducive to large-scale industrial production and promotion.
Owner:广纳珈源(广州)科技有限公司
Experiment method of lng leakage water curtain suppression
ActiveCN104297424BRealize remote controlAvoid low temperature damageMaterial analysisExperimental methodsData acquisition
Owner:CHINA PETROLEUM & CHEM CORP QINGDAO RES INST OF SAFETY ENG +1
A method for making optical micro-nano pattern on the surface of lithium niobate thin film
ActiveCN110850688BImprove Exposure AccuracyReliable technical solutions for exposing HSQPhotomechanical exposure apparatusMicrolithography exposure apparatusSputteringNano structuring
The invention relates to a method for manufacturing an optical micro-nano pattern on the surface of a lithium niobate film, which belongs to the technical field of micro-nano processing. The method comprises the following steps: manufacturing a layout required by electron beam exposure; cleaning and drying a lithium niobate substrate; sputtering a metal conductive layer on the lithium niobate substrate; spin-coating the lithium niobate substrate with electron beam glue; carrying out first electron beam exposure on the lithium niobate substrate to manufacture a mark; carrying out developing andfixing; carrying out magnetron sputtering of metal on the lithium niobate substrate to manufacture a metal mark; removing the photoresist and stripping a metal-masked pattern to prepare a lithium niobate sheet with a metal bulge mark; spin-coating the lithium niobate sheet with electron beam glue; carrying out second electron beam exposure on the lithium niobate sheet to manufacture a pattern; carrying out developing and fixing; and carrying out pattern transfer to form a micro-nano structure. By means of the method, a pattern with a steep side wall can be manufactured on a non-conductive lithium niobate material, a micro-nano pattern with the size smaller than 900nm can be manufactured, the manufactured optical waveguide is large in refractive index contrast ratio, the size of an opticaldevice can be reduced, and the performance of the optical device can be improved.
Owner:TSINGHUA UNIV +1
Copper-doped polydopamine nano-drug with stable hydroxyethyl starch prodrug as well as preparation and application of copper-doped polydopamine nano-drug
ActiveCN114146177AHigh absorption strengthGood photothermal effectOrganic active ingredientsEnergy modified materialsHydroxyethyl starchCoordination polymerization
The invention belongs to the technical field of multidisciplinary crossing of chemistry, materials, biomedicine and the like, and particularly relates to a copper-doped polydopamine nano-drug with stable hydroxyethyl starch prodrug as well as preparation and application of the copper-doped polydopamine nano-drug. The nano-drug is prepared by taking dopamine and copper ions as precursor components and reducing responsive hydroxyethyl starch adriamycin prodrug as a stabilizer through a simple'one-pot 'coordination polymerization strategy. Structural characterization shows that the nano-drug shows uniform particle size distribution and excellent stability. Functional tests show that the nano-drug not only shows excellent photo-thermal performance, but also can realize specific generation of chemotherapeutic drug adriamycin (reducing conditions) and high-toxicity hydroxyl free radicals (high-content H2O2) in a tumor microenvironment. Through the synergistic effect of multi-aspect treatment, the tumor growth is effectively inhibited.
Owner:HUAZHONG UNIV OF SCI & TECH
Device and method for measuring foam size distribution
ActiveCN113916139AReal-time shootingReal-time image acquisitionUsing optical meansEngineeringMaterials science
The invention discloses a device and method for measuring foam size distribution, and belongs to the technical field of foam testing devices. A light path conversion unit is arranged on the side portion of a foam collecting unit to refract light, a clear bubble distribution image is obtained through light refraction, distribution of bubble diameters can be conveniently tested, and a problem that a large number of background bubbles easily appear during microscope shooting is solved. According to the invention, the device comprises a foaming unit; a bubble collecting unit, wherein foam generated by the foaming unit is supplied to the bubble collecting unit; a light path conversion unit arranged at the side part of the bubble collecting unit; and an optical imaging unit which is arranged opposite to the light path conversion unit, wherein a bubble distribution image is obtained in the optical imaging unit after the light is refracted by the light path conversion unit.
Owner:XI'AN PETROLEUM UNIVERSITY
Compliant hinge stress measuring device
PendingCN110095215AEasy to installExperimental repeatability is highForce measurementElectrical/magnetic solid deformation measurementMeasurement deviceStress measures
The invention discloses a compliant hinge stress measuring device comprising a base, a spiral micrometer head support, a spiral micrometer head, a strip plate, and a plurality of strain gauges. A plurality of screw holes that are connected with fixed ends of to-be-measured compliant hinges by bolts are formed in the edge of the base in a length direction. The spiral micrometer head support is fixedly arranged at one end of the base. The spiral micrometer head is in threaded connection with the spiral micrometer head support. One end of the strip plate is abutted against the spiral micrometer head; and a long circular slot or a plurality of through holes that is or are connected with free ends of all to-be-measured compliant hinges by bolts is or are formed in the middle part of the strip plate in a length direction. The plurality of strain gauges are pasted on the deformed surfaces of all to-be-measured compliant hinges respectively and are used for collecting deformation signals of all to-be-measured compliant hinges and sending the signals to a static strain analysis device. According to the invention, the same rotation angles are given between different hinges and thus the hinges deform, so that the stress differences between different hinges are measured by the strain gauges. Moreover, the measuring device having a simple structure is operated conveniently.
Owner:SOUTH CHINA UNIV OF TECH
Method for constructing oral implant high-occlusion animal model
InactiveCN111759527AIncrease success rateLow drug costAnimal teeth treatmentAnimal husbandryBiomedical engineeringDental Gingiva
The invention discloses a method for constructing an oral implant high-occlusion animal model, and relates to the field of oral implant restoration. The method includes the following steps: 1) extracting bilateral maxillary first molars; 2) 21 days after heal of an alveolar socket, implanting an oral implant at the healing site, wherein the implant penetrates the gum and is lower than the occlusalplane; 3) 21 days after bone combination, placing a composite resin crown at the top of the implant to restore occlusal contact with the opposite jaw; and 4) extracting second and third maxillary molars. The model has high molding reproducibility, can generate higher bite force compared with a control, and cause greater strain in surrounding bones.
Owner:SICHUAN UNIV
A kind of preparation method of composite photothermal agent with photothermal effect
ActiveCN107510842BGood biocompatibilityExcellent photothermal performanceEnergy modified materialsAntineoplastic agentsMicrosphereNanoparticles dispersion
The invention discloses a preparation method of a clean composite photo-thermal agent with excellent photo-thermal effect; the preparation method includes the following steps: taking dopamine hydrochloride (DA) as a reaction monomer, taking water-soluble alcohol and deionized water as a mixed solvent, adding a proper amount of stronger ammonia water to adjust the pH of the solution, and then carrying out oxidation self polymerization full reaction to prepare polydopamine (PDA) nanoparticles having uniform particle size; dispersing the obtained PDA nanoparticles in a proper amount of deionized water to obtain a dispersion liquid, then mixing with a bivalent copper salt solution, and undergoing a complex reaction, to prepare a PDA-Cu<2+> complex; taking the obtained solution as a seed liquid, adding sulfide as a sulfur source, carrying out a full reaction under certain conditions, preparing composite microspheres with CuS loaded on PDA, then dialyzing to filter out unreacted small molecules, and thus obtaining a dispersion liquid of composite microspheres. The photo-thermal effect of the synthesized material is improved, moreover, the synthetic method is green, and the product is clean; meanwhile, the preparation method has high repeatability of experiments and is easy for subsequent promotion and application.
Owner:HUBEI UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com