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353results about How to "The experiment process is simple" patented technology
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Preparation method for preparing manganese dioxides in various crystal forms
InactiveCN102910680ALow costThe experiment process is simpleElectrolytic capacitorsNanotechnologyFiberFlower like
The invention discloses a preparation method for preparing manganese dioxides in various crystal forms, comprising the following steps of: with divalent manganese salt as a reducing agent and potassium permanganate as an oxidant, adjusting the ratio of raw materials, and reacting in a reaction kettle at 160 DEG C for 1-12h to synthesize both one-dimensional alpha-MnO2 nano fibers and beta-MnO2 nano bars and gamma-MnO2 flower-like structures. The preparation method is simple in preparation process and low in cost; and the product can be used for the research in fields such as super capacitor direction, catalysis and the like.
Owner:TIANJIN UNIV
Apparatus and method for testing cementation capability of well cementation first and second interfaces under high-temperature high-pressure conditions
ActiveCN104406910AReflect the state of stressAccurate evaluation of sealing capacityUsing mechanical meansMaterial analysisEngineeringHigh pressure
The invention discloses an apparatus and a method for testing cementation capability of well cementation first and second interfaces under high-temperature high-pressure conditions. The apparatus is mainly composed of a kettle body, an outer pressure pump, an inner pressure pump, a heating belt, a surrounding pressure sleeve, an inner pressure pipe, a nitrogen source, a rotor flow meter, an observation conical flask, an outer pressure sensor, an outer galvanic couple, an inner pressure sensor, an inner galvanic couple, a gas-liquid discharge valve and a computer. The method comprises: (1) sleeving an imitated rock core with the surrounding pressure sleeve, putting in the kettle body and pouring a drilling fluid; (2) heating the kettle body, injecting a pressure P1 into the drilling fluid, and maintaining for 3 d to form an artificial mud cake; (3) pouring a cement slurry into an annular space formed by the inner pressure pipe and the imitated rock core, setting the temperature as a downhole temperature T1, pressurizing to a surrounding pressure P2 needed by an experiment, and maintaining for 3 d to form a cement sheath; and (4) pressurizing the interior of the inner pressure pipe to a pressure P3 needed by the experiment, and testing the cementation capability of the first and the second interfaces. The principle is reliable, the apparatus and the method are capable of accurately testing the cementation capability of the well cementation first and second interfaces under the high-temperature high-pressure conditions, and the evaluation result is relatively precise.
Owner:SOUTHWEST PETROLEUM UNIV
Laser chemical fabrication of nanostructures
InactiveUS6864190B2Easy to operateBig and deep poreLayered productsSemiconductor/solid-state device manufacturingNd:YAG laserNanostructure
Disclosed is a process for fabricating luminescent porous material, the process comprising pre-treating a substrate (e.g. crystalline silicon) with laser radiation (e.g from a Nd:YAG laser) in a predetermined pattern followed by exposing the irradiated substrate to a chemical stain etchant (e.g. HF:HNO3:H2O) to produce a luminescent nanoporous material. Luminescent porous material having a luminescence maximum greater than about 2100 meV may be produced by this method. Such nanoporous materials are useful in optoelectronic and other semiconductor devices.
Owner:NAT RES COUNCIL OF CANADA
Preparation method of carbon supported core-shell Ni-Pt particles for direct methanol fuel cells
ActiveCN101455970AImprove catalytic performanceLow priceCell electrodesMetal/metal-oxides/metal-hydroxide catalystsChemistryInorganic chemistry
The invention provides a method for preparing carbon-supported nucleocapsid type Ni-Pt particles for direct methanol fuel cell catalysts, which belongs to a preparation process of direct methanol fuel cell catalysts. The method comprises the steps of adopting sodium citrate as a stabilizer, adopting cationic surfactant CTAB as dispersant, using sodium hypophosphite to reduce nickel acetate, generating a Ni kernel on the surface of Vulcan XC-72 or mesoporous carbon treated with sodium borohydride, washing superfluous sodium hypophosphite and generating a Pt shell on the surface of the Ni kernel through chemical replacement. The catalyst has a structure with the Ni kernel and the Pt shell, and has the advantages of low Pt support amount and high catalytic activity.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Appraisement method for rock wettability
InactiveCN101196460AEvaluation results are reliableThe experiment process is simpleSurface/boundary effectPermeability/surface area analysisOperabilityFrequency dispersion
The invention relates to a rock wettability evaluating method used for petroleum drilling and exploration, which utilizes the frequency dispersion character of rock electrical parameter to conduct reservoir rock wettability evaluating. The dispersion information of phase has closer relationship with the wettability comparing with the resistivity; therefore the evaluating result is more accurate and reliable. The method has the characters of being simple, visual and convenient, which doesn't need special experiment device and the experiment period is short, the maneuverability is strong, the experiment process is simple, and can be conducted under normal temperature and pressure, and which also can be conducted under stimulating the high temperature and pressure of reservoir condition.
Owner:LIAOHE GASOLINEEUM EXPLORATION BUREAU
Manufacture method of lithium lanthanum titanium oxide
ActiveCN1970455AImprove electrical performanceThe experiment process is simpleCell electrodesLithium compoundsAlcoholLithium-ion battery
The invention discloses a making method of Li-La-Ti oxide in the lithium ion battery domain, which comprises the following steps: adopting lithium nitrate, lanthanum nitrate and butyl titanate as raw material with molecular formula as Li3xLa2 / 3-xTiO3 (0<x<0.16); setting the molar rate of Li, La and Ti at 1: 1: 2; adopting alcohol or ethylene glycol monomethyl ether as solvent; or adjusting pH value under 1 through water and acetate; drying solution; sintering under 800-900 deg.c for 2h; obtaining pure LLTO. the invention shortens experimental period and synthesizing temperature with grain size about 200nm, which possesses excellent compact and electric property.
Owner:TSINGHUA UNIV
System and method for integrating and publishing pages of content
InactiveUS20110161847A1The experiment process is simpleMultiprogramming arrangementsWebsite content managementContent managementThird party
Systems and methods for integrating, building, and publishing pages of content are described that provide third parties the ability to present their products and services together with a host's content through a content management and publishing platform. Content is selected from the host or the third party. The page can be on the host's server or on the third party's sever. The content management and publishing platform utilizes a flexible template and database-driven architecture. A toolset is provided with the template that allows users to interactively select and program content accessed through APIs.
Owner:CBS INTERACTIVE
Shale compressibility comprehensive evaluation method based on uniaxial strength experiment
InactiveCN104777035AThe experimental process is simple and easyLow equipment requirementsMaterial strength using tensile/compressive forcesMass distributionElastic modulus
The invention provides a shale compressibility comprehensive evaluation method based on uniaxial strength experiment. The method comprises the steps of (1) taking a shale core sample for executing uniaxial compressive strength test, testing an elasticity parameter, and drawing a stress-strain curve diagram; (2) calculating normalized elasticity modulus and normalized poisson ratio to obtain a brittleness index; (3) obtaining key points on the stress-strain curve, and calculating the shape index of the stress-strain curve; (4) obtaining fracture distribution diagram of the side face of the fixed sample, and calculating a fracture distribution index through box-counting dimension method; (5) measuring spallation fragment mass distribution at different scales through a screen and a balance so as to obtain a block distribution index; and (6) calculating arithmetic mean value of the obtained brittleness index, shape index of the stress-strain curve, fracture distribution index and block distribution index of fragments to get the comprehensive compressibility index. The method provided by the invention is used for evaluating fracture net forming capability of the shale after being compressed, the experiment is simple and easy to carry out, and post treatment is visual and simple, so that the method is suitable for indoor evaluation and oilfield in-site application.
Owner:SOUTHWEST PETROLEUM UNIV
High-specific surface area nanometer mesoporous silicon carbide hollow ball and preparation method thereof
InactiveCN105236411ALarge specific surface areaUniform structureMaterial nanotechnologyThermal insulationReaction temperature
The invention relates to a high-specific surface area nanometer mesoporous silicon carbide hollow ball and a preparation method thereof. The preparation method comprises dropwisely adding different amounts of silica precursor tetraethoxysilane into water-anhydrous ethanol mixed solutions with different ratios so that the silica precursor tetraethoxysilane is hydrolyzed into silica solid nanospheres with different diameters, dispersing the silica solid nanospheres in distilled water with different volumes, carrying out thermal insulation for a certain time to obtain nanometer mesoporous silicon carbide hollow balls with different diameters are obtained, coating the inner and outer shells of the nanometer mesoporous silicon carbide hollow ball with an organic matter layer so that the organic matter is insert into the shell walls, carrying out carbonization, mixing the reaction product, magnesium powder and a metal salt to obtain a uniform mixture, and carrying out thermal insulation in an inert atmosphere for some hours to obtain nanometer mesoporous silicon carbide hollow balls with uniform structures and adjustable sizes. The preparation method has a low reaction temperature and a low cost. The obtained hollow silicon carbide has the advantages of uniform structure, adjustable sizes, superhigh specific surface area of 648m<2> / g and excellent mesoporous structure.
Owner:湖北朗驰新型材料有限公司
No-solvent electrically spinning process for preparing micron and nanometer fiber
InactiveCN101021017AThe experiment process is simpleEasy to operate and repeatSpinnerette packsArtificial filament physical treatmentSolventPhotoinitiator
The present invention belongs to the field of micron / nanometer fiber preparing technology, and is especially no-solvent electrically spinning and ultraviolet curing process for preparing micron / nanometer fiber. The reacted components include acrylate oligomer, active diluent and photoinitiator. The process includes pre-polymerizing to form oligomer, electrically spinning while irradiating with ultraviolet ray to decompose the photoinitiator for generating free radical initiating the polymerization of the pre-polymer and splitting fiber to generate micron / nanometer fiber. The process has material utilizing rate as high as 100 %, no environmental pollution caused by volatized solvent and low production cost.
Owner:JILIN UNIV
Method for measuring dynamic capillary pressure of core under conditions of reservoir temperature and pressure
InactiveCN101967970AReal stress responseTrue size responseBorehole/well accessoriesRock coreLine tubing
The invention discloses a method for measuring a dynamic capillary pressure of a core. The method comprises the following steps of: washing, drying and evacuating the core; saturating the core with a first fluid; putting the saturated core into a core clamp holder by using core displacement equipment; setting an experimental temperature; completely saturating dead volume parts of pipelines at an upstream end and a downstream end of the core with the first fluid; simultaneously setting a return pressure as a strata pressure; keeping a constant pressure and injecting the first fluid; after the upstream and downstream differential pressure of the core is stable, stopping injecting the first fluid; injecting a second fluid, wherein the second fluid is injected into a pipeline at the upstream end of the core under the same differential pressure as that of the first fluid; displacing the first fluid in a dead volume of the pipeline at the upstream end and making the first fluid enter the core; recording the change of the accumulated flow at the outlet end of the core along with time in the process of injecting the second fluid; and measuring the dynamic capillary pressure by calculating. The method of the invention has a simple process, is easy to operate, and is rapid and accurate.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Preparation method of porous nickel oxide/tin dioxide micro/nano spheres
InactiveCN102680539AHigh purity powderPorous pore size distribution is uniformMaterial resistanceTin dioxideMicro nano
The invention discloses a preparation method of porous nickel oxide / tin dioxide micro / nano spheres, which comprises the following steps: stirring tin tetrachloride pentahydrate, nickel sulfate hexahydrate, sodium hydroxide and ammonia water which are used as raw materials, heating, separating, washing, drying and the like to obtain micro / nano spherical hydroxy nickel stannate; and roasting a micro / nano spherical NiSn(OH)6 precursor at high temperature, and cooling to respectively obtain porous micro / nano spherical NiO / SnO2 powder. The micro / nano spherical NiO / SnO2 product prepared by the method disclosed by the invention is light green powder, and has the advantages of large specific area and good product quality. The impedance gas sensing element prepared from the micro / nano spherical NiO / SnO2 powder has high sensitivity, and the sensitivity S value for 100ppm methylbenzene and formaldehyde gases is respectively up to 19.8 and 27.6.
Owner:ANHUI NORMAL UNIV
Cyclodextrin cross-linking polymeric microsphere capable of absorbing bilirubin and its preparation and application
InactiveCN1541761AHigh selectivityImprove removal efficiencyOther chemical processesCross-linkCyclodextrin
The present invention relates to the removal of bilirubin from blood, and is especially cyclodextrin crossed polymer microsphere for adsorbing bilirubin and its preparation and application. The microsphere is prepared with diisocyanate as crosslinking agent and through condensation with cyclodextrin monomer. The polymer microsphere of the present invention has low cost and results in simplified experiment process, and the efficient removal of bilirubin with the polymer microsphere shows that the said material has excellent clinical application latent.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Preparation method for stannic disulfide/graphene nanocomposite, negative electrode of lithium ion battery, and lithium ion battery
InactiveCN106129378AEvenly distributedImprove performanceCell electrodesSecondary cellsGraphene nanocompositesCvd graphene
The invention discloses a preparation method for a stannic disulfide / graphene nanocomposite, a negative electrode of a lithium ion battery, and the lithium ion battery. The preparation method comprises the following steps of performing a hydrothermal process and a compounding process. By adoption of the preparation method, the stannic disulfide is subjected to direct in-situ growth on the surface of graphene; then the obtained stannic disulfide is washed and dried to obtain the sheet-shaped stannic disulfide / graphene nanocomposite; the material is applied to the negative electrode material of the lithium ion battery; the stability and the conductivity of the material are effectively improved; the performance of the battery is improved; and the stannic disulfide / graphene nanocomposite has the advantages of high cycling stability, high specific energy density and the like.
Owner:ANHUI NORMAL UNIV
Testing method for mode I crack dynamic fracture overall process parameters under blast loading
The invention, a testing method for mode I crack dynamic fracture overall process parameters under blast loading, discloses the testing method for the dynamic crack initiation toughness, dynamic expansion toughness and dynamic crack arrest toughness of mode I crack under blast loading, and belongs to the technical field of geotechnical engineering. The configuration of an internal single crack disc specimen with a large size is an autonomous design; testing results cannot be influenced by reflected extension waves and transmission waves; and the method is suitable for researching the crack growth rate and growth behavior of the whole process. Blast loading adopts an 8# detonator; numeral calculation adopts a finite element difference software AUTODYN; and a result basically accords with atest. A load stress time history curve can be input into a finite element program ABAQUS; the time history curve of a dynamic stress intensity factor can be obtained; and the dynamic fracture toughness of a material can be determined through the fracture time of a crack. The specimen is simple in configuration and easy in processing; the test is concise and clear in process and convenient in operation; and researches on crack dynamic growth behavior and tests on the dynamic fracture toughness can be realized.
Owner:SICHUAN UNIV
Preparation method of nano-material with bismuth oxybromide loaded on cobalt nickel hydrotalcite surface
InactiveCN105217720AThe experimental process is simple and easy to operateHigh catalytic repeatabilityWater/sewage treatment by irradiationOther chemical processesLayered structureIon
The invention relates to a preparation method of a nano-material with bismuth oxybromide loaded on a cobalt nickel hydrotalcite surface. The method includes: taking Co-Ni-Br LDH as the precursor, slowly adding a mixed solution of bismuth nitrate and mannitol dropwise, conducting stirring in a 40DEG C oil bath pan for 1h, subjecting the product to centrifugal separation and performing cleaning with a lot of water and ethanol, and finally drying the product in a 60DEG C oven. According to the method, through scanning electron microscopy (SEM) observation on the prepared BiOBr-Co-Ni-No3 LDHs nano-material, BiOBr nanosheets are crosswise stacked on the cobalt nickel hydrotalcite sheet layer irregularly, so that dyes of different types can be efficiently degraded under ultraviolet light, also a phenol organic solution can also be degraded, and a good recycle rate can be achieved. The efficient photocatalytic property is attributed to that bismuth oxybromide and cobalt nickel hydrotalcite have the similar layered structure, and the heterojunction formed by loading of the two realizes effective separation and transfer of electrons and holes.
Owner:HOHAI UNIV
Method for preparing molybdenum disulfide/graphene nanometer composite materials, lithium ion battery and cathode thereof
ActiveCN106207171AEvenly distributedImprove performanceMaterial nanotechnologyCell electrodesNano compositesGraphene nanocomposites
The invention discloses a method for preparing molybdenum disulfide / graphene nanometer composite materials, a lithium ion battery and a cathode thereof. The method includes a hydrothermal working procedure and a composite working procedure. The method, the lithium ion battery and the cathode have the advantages that lamellar molybdenum disulfide can directly grow on the surfaces of graphene in an in-situ manner, and accordingly the molybdenum disulfide / graphene nanometer composite materials are unique in morphology and have large specific surface areas, and the problem of graphene and molybdenum disulfide agglomeration can be solved; the molybdenum disulfide / graphene nanometer composite materials applied to cathode materials for the lithium ion battery are good in cycle stability and high in specific energy density, and the like.
Owner:ANHUI NORMAL UNIV
Preparation method of semi-polar m-plane GaN base semiconductor device containing SiNx insertion layer
InactiveCN103952683AQuality improvementThe experiment process is simpleSemiconductor/solid-state device manufacturingChemical vapor deposition coatingChemistryReaction chamber
The present invention discloses a preparation method of a semi-polar m-plane GaN base semiconductor device containing a SiNx insertion layer. The preparation method mainly comprises: (1)placing a m-plane sapphire substrate in a MOCVD reaction chamber, introducing hydrogen gas and ammonia gas mixed gas, and carrying out a heat treatment on the substrate; (2) growing a low temperature AlN nucleation layer with a thickness of 15-40 nm on the substrate; (3) growing a high temperature AlN nucleation layer with a thickness of 90-150 nm on the low temperature nucleation layer; (4) growing a GaN buffer layer with a thickness of 1000-2500 nm on the AlN nucleation layer; (5) depositing a SiNx insertion layer on the m-plane GaN buffer lay and in the PECVD; and (6) growing a GaN epitaxial layer with a thickness of 4000-6000 nm on the SiNx insertion layer. The m-plane GaN film has the advantage of low defect, and can be used for production of the semi-polar m-plane GaN light-emitting diodes.
Owner:XIDIAN UNIV
Lithium ion battery electrochemical impedance online monitoring testing method
ActiveCN109856557ATo achieve the purpose of online monitoring of battery electrochemical impedance changesThe experiment process is simpleElectrical testingElectrical batterySpectroscopy
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY
Method for obtaining anatomical structural atlas for target mouse based on XCT image non-rigid registration
InactiveCN104867104AThe experiment process is simpleLow costImage enhancementImage analysisAnatomical structuresComputer science
The invention discloses a method for obtaining anatomical structural atlas for a target mouse based on XCT image non-rigid registration. The method includes basic steps of setting Digimouse model as referential mouse anatomical structural atlas, setting XCT images corresponding to Digimouse as referential images, obtaining and pretreating XCT images of the target mouse, building referential images to registration mapping matrix of the target images by non-rigid registration technology, acting registration mapping matrix onto the referential mouse anatomical structural atlas to build a target mouse anatomical structural atlas and mark tissue and organs of the target mouse. The registration method is high in precision, and tissue and organs of a mouse can be marked on a mouse XCT image in a simple and easy way through image registration method. The method is also applicable to other medical science application fields, such as brain structure research, i.e. the anatomical structure of a target brain can be obtained by standard brain anatomical images.
Owner:TIANJIN UNIV
Soil ground respiration determination method and device thereof
InactiveCN1525166AGood repeatabilityImprove stabilityChemical analysis using titrationEarth material testingEngineering
The invention relates to a soil basic respiration determining technique, concretely a soil basic respiration determining method and device. It uses absorbing plate as CO2 absorbing device, places soil sample at the bottom of a sealed container, places the absorbing plate in or below the middle of the sealed container and above the soil sample, makes routine culture, then takes out the absorbing plate and add in indicator and mix, and directly titrates in the absorbing plate, and then finds out the CO2 quantity released by the soil during the culture; its device includes a sealed container, splint, and supporting rod, where the supporting rod passes through the container cover and is installed with the splint in the sealed container and the absorbing plate is placed on the splint. It has good repetition and excellent stability.
Owner:SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
High temperature and high pressure multiphase fluid comprehensive tester
InactiveCN106596802ASimple structureImprove test accuracyComponent separationCombined testData collector
The invention relates to a high temperature and high pressure multiphase fluid comprehensive tester, which comprises a fluid storage and output system, a high temperature and high pressure simulation system, a fluid solubility analysis and testing system, a sampler, a data collector and a computer host machine, wherein a reaction chamber is arranged in the high temperature and high pressure simulation system, the fluid storage and output system is communicated to a gas inlet, the communicated pipeline is provided with a gas mass and flow rate meter, the gas mass and flow rate meter is sequentially connected to the data collector and the computer host machine, the high temperature and high pressure simulation system is provided with a temperature sensor and a pressure sensor, the temperature sensor and the pressure sensor are respectively connected to the data collector, the sampler is used for sampling a fluid to be detected in the reaction chamber, and the fluid to be detected can be subjected to solubility analysis and testing in the fluid solubility analysis and testing system. According to the present invention, the high temperature and high pressure multiphase fluid comprehensive tester has advantages of simple structure, high test precision, controlled experiment temperature, controlled experiment pressure and controlled experiment volume, can stably work for a long time under the high temperature and high pressure conditions, and is used for the accurate testing of the fluid phase, the fluid property and the solubility.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Method for measuring cadmium isotope ratio in rice by using multi-receiving inductance coupling plasma mass spectrum
ActiveCN104713939AData specificationHigh recovery rateMaterial analysis by electric/magnetic meansInductively coupled plasmaIsotope
The invention provides a method for measuring a cadmium isotope ratio in rice by using a multi-receiving inductance coupling plasma mass spectrum. The method comprises the following steps: 1, performing microwave digestion on a rice sample to measure the content of total cadmium; 2, performing microwave digestion on the rice sample to measure the content of total cadmium in a separated and purified rice sample, thereby obtaining a separation and purification rate; 3, performing microwave digestion on a to-be-measured rice sample, and performing separation and purification to obtain to-be-measured liquid; and 4, measuring the cadmium isotope ratio in the to-be-measured liquid by using the multi-receiving inductance coupling plasma mass spectrum, wherein the separation and purification process specifically comprises the following steps: a, converting a nitric acid medium of a digestion solution into a hydrochloric acid medium; b, leaching the digestion solution of the hydrochloric acid medium for five times by using hydrochloric acid, and then leaching for two times by using Milli-Q water to obtain a leachate; c, eluting and collecting the leachate; and d, converting an eluting solution into a nitric acid medium from a hydrochloric acid medium. By adopting the method provided by the invention, the technical problem of separating and purifying cadmium from a rice sample low in cadmium content is solved, and a cadmium pollution source can be quickly and accurately restored, so that the method has a good application value.
Owner:INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI
Silicon nano-material with three-dimensional cross-linked structure as well as preparation method and application thereof
ActiveCN108358206ARich reservesConducive to commercial promotionCell electrodesNanotechnologyCross-linkAluminium chloride
The invention discloses a silicon nano-material with a three-dimensional cross-linked structure as well as a preparation method and application thereof. The silicon nano-material with the three-dimensional cross-linked structure is extracted from silicate minerals by adopting a fused salt reduction method; specifically, the preparation method comprises the following steps: uniformly mixing magnesium powder or aluminum powder, aluminum chloride and a silicon dioxide precursor formed by carrying out hydrothermal acidification treatment and derivatization on natural silicate minerals; carrying out sealed fused salt reduction reaction in a reaction kettle to prepare the silicon nano-material with the three-dimensional cross-linked structure. The method disclosed by the invention is simple andefficient and is easy to prepare; prepared silicon particles have good characteristics of high purity, small size, high specific capacity and the like, and have a wide application prospect in the energy-storage fields including electrode materials of ion batteries and the like.
Owner:CENT SOUTH UNIV
Antibacterial composite nanofiltration membrane with high salt rejection rate and preparation method of antibacterial composite nanofiltration membrane
InactiveCN104548951AImprove antibacterial propertiesThe experiment process is simpleSemi-permeable membranesRejection rateNanofiltration
The invention discloses an antibacterial composite nanofiltration membrane with high salt rejection rate and a preparation method of the antibacterial composite nanofiltration membrane. The composite nanofiltration membrane contains attapulgite modified by a chitosan quaternary ammonium salt. The preparation method comprises the following steps: (1) enabling a porous support layer to be in contact with a water phase solution of a compound containing two or more reactive amino groups; (2) removing the excess water phase solution on the porous support layer after water phase infiltration; (3) enabling the porous support layer after the treatment in step (2) to be in contact with an organic phase solution of an acyl chloride compound containing two or more acyl chloride groups; (4) volatilizing the organic phase solution and further enabling the porous support layer to be in contact with the water phase solution of the compound containing two or more reactive amino groups and the attapulgite modified by the chitosan quaternary ammonium salt; (5) performing heat treatment and washing with water to obtain the antibacterial composite nanofiltration membrane. The antibacterial composite nanofiltration membrane disclosed by the invention can improve antibacterial performance and salt rejection rate on the basis of keeping considerable water flux.
Owner:CHINA PETROLEUM & CHEM CORP +1
Composite nanofiltration membrane containing organically modified attapulgite and preparation method thereof
ActiveCN103785297AIncreased water fluxImprove salt interception rateSemi-permeable membranesNanofiltrationAmmonium
The invention discloses a composite nanofiltration membrane containing organically modified attapulgite and a preparation method thereof. The nanofiltration membrane is prepared by: (1) contacting a porous polysulfone supporting layer and a water phase solution containing reaction monomers; (2) rolling the porous polysulfone supporting layer having been dipped in the water phase by a rubber roller to remove the excess water phase solution; (3) contacting the porous polysulfone supporting layer treated in the step (2) and an organic phase solution containing reaction monomers and the purified and organically modified attapulgite to obtain a composite membrane; and (4) drying the composite membrane, allowing the composite membrane to stand, and washing the composite membrane with water to obtain the composite nanofiltration membrane. The purified attapulgite modified with a quaternary ammonium salt is introduced in an interfacial polymerization process, thus enhancing permeability of the composite nanofiltration membrane.
Owner:CHINA PETROLEUM & CHEM CORP +1
Environment controllable type atomic force microscope-based numerical control rotary type probe switching device
ActiveCN108427016AEffective positioningPrecise positioningScanning probe microscopyNumerical controlEngineering
The invention discloses an environment controllable type atomic force microscope-based numerical control rotary type probe switching device. The environment controllable type atomic force microscope-based numerical control rotary type probe switching device comprises a cavity upper cover and a probe switching structure. An irregular rectangular boss, an inner groove, a rectangular light window structure and a sealing flange structure are arranged on the cavity upper cover. The environment controllable type atomic force microscope-based numerical control rotary type probe switching device has the following prominent advantages: 1) due to the design of the irregular rectangular boss, the inner groove, the rectangular light window structure and the sealing flange structure, the internal working space of the cavity is obviously increased and the space utilization rate is effectively increased; 2) due to asymmetrical cooperative design of the inner groove, an L-shaped transitional plate connecting structure, a probe bracket and a probe carrying block, the laser vertical focusing height and the focusing position are effectively guaranteed; and 3) efficient and accurate switching of 8 probes with different functions is realized through program control and in different working environments of vacuum, atmosphere, liquid and the like, so that the functions of surface shape scanning, Raman spectrum analysis, microscopic friction wear and friction coefficient measurement are realized in situ in the same working environment.
Owner:SOUTHWEST JIAOTONG UNIV
Measurement method and device for large-curvature-radius non-zero-digit interference based on virtual Newton's ring
InactiveCN106595529AThe experiment process is simpleGuaranteed experimental accuracyUsing optical meansNewton's ringsComputer science
The invention provides a measurement method and device for large-curvature-radius non-zero-digit interference based on a virtual Newton's ring. Circular carrier-frequency Newton's ring interferograms are converted into linear carrier-frequency interferograms via second-order polar coordinates, a low-frequency moire fringe graph after low-pass filtering is demodulated, wavefront differential data between a to-be-measured spherical surface and a standard spherical surface is extracted, and a calculation formula of the curvature radius is derived. On the basis of a model of a ZEMAX software based Fizeau spherical large-curvature-radium non-zero-digit detection system, a finite iteration method is used correct backhaul errors during Newton's ring interferogram collection in non-zero-digit detection. The Fizeau spherical large-curvature-radium non-zero-digit detection system is constructed, and verification for the spherical large-curvature-radium non-zero-digit measurement technology based on the virtual Newton's ring is completed.
Owner:NANJING UNIV OF SCI & TECH
Method for establishing tumor multi-drug resistant cell mode and human breast cancer multi-drug resistant cell strain established by virtue of method
ActiveCN104745531AThe experiment process is simpleStable modeling conditionsTumor/cancer cellsNew medicationsPharmaceutical drug
The invention belongs to the field of oncobiology and relates to a method of establishing a tumor multi-drug resistant cell mode in vitro. The method comprises the step of continuously culturing a sensitive tumor cell by taking ROS as an incubation drug to enable the sensitive tumor cell to generate multi-drug resistance. Moreover, the invention further relates to a human breast cancer multi-drug resistant cell strain established by virtue of the method. The cell strain is named MCF-7 / ROS and preserved in CCTCC (China Center for Type Culture Collection), wherein the address is 430072, Wuhan University, Wuhan, China; the preservation date is 28th, January, 2015; the preservation number is CCTCC-C201520. The method provided by the invention is simple in process and stable in modeling condition, the modeling cost can be remarkably lowered, and the method has wide applicability. The MCF-7 / ROS cell strain established by the method can serve as an advantageous experimental mode for researching related mechanism, target spot exploration and screening of new drugs.
Owner:HENAN UNIVERSITY
Porous graphene as well as preparation method and application thereof
InactiveCN104743548AThe preparation method is simple and easyThe experiment process is simpleHybrid capacitor electrodesPorous graphenePore distribution
The invention discloses a method for preparing porous graphene. The method comprises the following steps: mixing a soluble metal saline solution with a graphene oxide water solution, stirring and drying, and performing thermal treatment and acid treatment to obtain the porous graphene material; the metal in the soluble metal saline solution is chosen from nickel, cobalt, copper, iron or manganese. The invention also discloses the porous graphene prepared by the method and an application of the the porous graphene to a supercapacitor. By adopting the method for trepanning graphene by using a metal cation, provided by the invention, the preparation process is simple, the application scope is wide, the aperture and pore distribution is simple to control and the industrialization of the porous graphene is possible.
Owner:ZHEJIANG UNIV
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