Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

31results about How to "Avoid quenching" patented technology

Hot-rolled air-cooled bainite steel as well as preparation method and application thereof

The invention discloses hot-rolled air-cooled bainite steel as well as a preparation method and application thereof. The hot-rolled air-cooled bainite steel comprises the following chemical components in percentage by mass: 0.18%-0.28% of C, 1.6%-2.4% of Mn, 0.8%-1.5% of Si, 0.2%-0.6% of Cr, 0.1%-0.2% of Mo, 0.02%-0.08% of V, 0-0.015% of Ti, 0.01%-0.02% of Al (t) and the balance of Fe and residual trace impurities. The preparation process of the hot-rolled air-cooled bainite steel is simple, carbide-free bainite, retained austenite and martensite are formed through natural air cooling and low-temperature tempering of the hot-rolled round steel, the processes of quenching, quenching, medium-high temperature tempering, salt bath treatment and the like are avoided, the heat treatment cost can be saved, and emission of harmful gas is reduced. In addition, the hot-rolled air-cooled bainite steel is excellent in mechanical property and can be used for manufacturing large-size bolts.
Owner:BEIJING JIAOTONG UNIV

Method for rapidly detecting neutrophil extracellular trapping net

The invention relates to the technical field of medical examination, in particular to a method for rapidly detecting a neutrophil extracellular trapping net. The method comprises the following steps: (1) taking a human whole blood sample, adding a hemolytic agent, then adding a mixed fluorescent antibody staining solution, shaking and uniformly mixing, and standing and incubating at room temperature; (2) centrifuging after incubation in the step (1), absorbing and discarding a supernatant, washing with a washing solution, centrifuging, absorbing and discarding the supernatant; (3) adding a washing solution to resuspend the cells; and (4) detecting by adopting a flow cytometer. The detection method is good in stability, high in repeatability and high in fluorescence intensity, and can be used for auxiliary diagnosis of diseases.
Owner:SUZHOU KUIKTAI BIOTECHNOLOGY CO LTD

Method for detecting fluorescent substances in talc raw ore

The invention belongs to the technical field of talc, and provides a method for detecting fluorescent substances in talc raw ore, which comprises the following steps: S1, carrying out ball milling on the talc raw ore in a ball mill, sieving to obtain sieved powder, and adding deionized water into the sieved powder to obtain slurry; s2, adding the slurry into the mixture to enable the pH value of the slurry to be 5, stirring, and standing in a water bath for 2-3 hours to obtain a first precipitate; s3, adding a thiourea-ascorbic acid solution into the first precipitate to obtain a second precipitate; and S4, carrying out secondary ball milling on the second precipitate, and spreading the second precipitate in an enamel plate to detect whether the talc raw ore contains the fluorescent substances or not. The hydrochloric acid can dissolve quartz and mica to avoid generation of background fluorescence or quenching effect, and the nonionic surfactant polyethylene glycol can be adsorbed on the surface of the mineral to reduce interfacial tension, so that the hydrochloric acid is easier to infiltrate tiny pores, the pit defect caused by local over-corrosion is reduced, the pickling uniformity is improved, and the detection sensitivity is improved.
Owner:LIAONING AIHAI TALC CO LTD

Ratio fluorescence sensing system based on aggregation-induced emission and application thereof

The invention relates to H2S detection, in particular to an aggregation-induced emission-based ratiometric fluorescence sensing system and application thereof.Penicillamine is used as a ligand to synthesize gold-copper nano-clusters (Pen-Au / CuNCs) and tetraphenylethylene modified hollow mesoporous silica (TPE-NH2-HMSNs) of an amino ligand, and the Pen-Au / CuNCs and the tetraphenylethylene modified hollow mesoporous silica are combined to successfully construct an efficient ratiometric fluorescence sensing platform (Au / CuNCs and HMSNs). The sensor is used for selectively detecting H2S, and two analysis methods of solution sensing and solid portable sensing are established. Compared with other methods for detecting H2S reported before, the method provided by the invention has a lower detection limit (0.147 [mu] M). In addition, a novel portable hydrogel bead fluorescence detection device is developed by utilizing color change, and quantitative visual detection of H2S is realized by combining with a smart phone.
Owner:CHINA PHARM UNIV

High-temperature superconducting magnet temperature equalization control method for circulating cold helium

The invention provides a high-temperature superconducting magnet temperature equalization control method for circulating cold helium, and belongs to the field of superconducting magnet temperature control, and the method comprises the steps: calculating a difference value between a target temperature and an actual measurement temperature, and obtaining a steady-state error of each group of magnets; constructing a mathematical model of the cold helium cooling system according to a singular perturbation theory; a control target is determined, and the overall performance and stability of the cold helium cooling system are improved; and constructing a singular perturbation control model based on the variable universe Smith. According to the invention, the response speed and precision of the cold helium cooling system can be improved.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Self-cleaning radiative cooling coating based on biomass carbon quantum dots, its preparation method and application

PendingCN122278271AReduce processing burdencurb emissionsBiomass carbonNew energy
This invention discloses a self-cleaning radiative cooling coating based on biomass carbon quantum dots, its preparation method, and its application. The coating comprises a polymer film-forming resin, carbon quantum dots, and hollow glass microspheres; wherein the mass ratio of the polymer film-forming resin to the filler is 1:(0.1-0.5), and the mass ratio of the hollow glass microspheres to the carbon quantum dots is 1:(0.05-0.2). This invention synergistically enhances solar reflectivity through the photoluminescence properties of carbon quantum dots and the scattering properties of hollow glass microspheres, while simultaneously utilizing the synergistic effect of fluorinated resin and modified hollow glass microspheres to endow the coating with superhydrophobic self-cleaning function. A single layer of this coating can achieve a solar reflectivity >92%, mid-infrared emissivity >94%, and contact angle >150°, possessing both efficient daytime radiative cooling and long-lasting self-cleaning performance. It is particularly suitable for passive heat dissipation of outdoor equipment such as new energy vehicle charging piles, and features simple process, environmental friendliness, and excellent performance.
Owner:ZHEJIANG UNIV

A lutetium / cerium yellow-green phosphor for white LEDs and its preparation method

The present application belongs to the technical field of fluorescent material preparation, and discloses a lutetium / cerium yellow-green phosphor for white light LED, wherein the lutetium / cerium yellow-green phosphor for white light LED comprises a matrix and cerium-containing oxide and lutetium-containing oxide shallowly doped on the surface of the matrix, wherein the shallow doping is achieved by the migration of the cerium-containing oxide and lutetium-containing oxide precipitated on the surface of the matrix into the interior of the matrix; the chemical formula of the lutetium / cerium yellow-green phosphor for white light LED is (Ce x Lu y Y (3‑x‑y‑z) M z )Al5O 12 ; Wherein, M is selected from at least one of the elements Li, Na, Mg, K, Ca, and Sc, and 0.03≤x≤0.06, 1.00≤y≤2.00, and 0.05≤z≤0.1. The present application obtains a phosphor with good thermal stability and high luminous intensity through the above design. In addition, the present application also discloses a method for preparing the above-mentioned lutetium / cerium yellow-green phosphor for white light LEDs.
Owner:JIANGMEN KANHOO IND CO LTD

Reagent for reducing autofluorescence and method for preparing animal tissue paraffin flakes

The invention discloses a reagent for reducing autofluorescence, which comprises copper sulfate, ammonium chloride and a solvent, and the solvent is water. The invention further discloses a method for preparing the animal tissue paraffin slice. According to the method, cell membrane fluorescence labeling can be maintained while good animal tissue morphology is maintained, non-specific fluorescence is reduced, the signal-to-noise ratio of fluorescence imaging is increased, operation is easy and convenient, reagents are low in cost and easy to obtain, and the imaging quality is effectively improved.
Owner:JIANGSU PROVINCE HOSPITAL (THE FIRST AFFILIATED HOSPITAL OF NANJING MEDICAL UNIVERSITY)

Organic compounds, compositions and organic electronic devices

ActiveCN117024457Beasy to purifyhigh purity
The application relates to the technical field of light-emitting materials, in particular to an organic compound, a composition and an organic electronic device. The organic compound has a structure as shown in any one of general formula (I) to (III). The organic compound is a novel light-emitting material, and when the organic compound is used in an organic electronic device, the problems of low light-emitting efficiency and short service life of the organic electronic device can be solved.
Owner:GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD

A steam treatment article cooling device and a cooling method thereof

ActiveCN121452789Bsmall temperature differenceEven and gentle contact
The present application belongs to the technical field of metal manufacturing, and particularly relates to a steam treatment product cooling device and a cooling method thereof, which comprises an outer barrel, an inner barrel, a top cover, a flow guide air supply assembly and an adjustment space assembly; the inner barrel is arranged in the inner part of the outer barrel, and a chamber for accommodating a cooling medium is formed between the inner barrel and the outer barrel; the top cover is arranged on the top of the outer barrel; the present application is designed by means of double cooling and non-direct blowing air flow, specifically, the cooling medium between the outer barrel and the inner barrel is used to indirectly reduce the ambient temperature of the inner barrel, so as to reduce the temperature difference between the part and the cooling environment, avoid sudden cooling, and divide the cold air of the air blower into two paths by the flow guide air supply assembly; the spiral flow guide plate guides the air flow to surround the outer side of the part, the injection rod is directionally injected into the gap between the parts, and the injection inclined plate and the air gathering ring are used to realize full-dimension air flow coverage; the air flow is uniformly and gently contacted with the surface of the part, and there is no local air sharp cooling, so that the condensate water generation condition is eliminated from the root, and then the oxidation and rust are avoided.
Owner:ZHEJIANG QUZHOU YONGFENG METAL PROD

Water treatment method based on non-free radical oxidation

The invention relates to the technical field of sewage treatment, in particular to a water treatment method based on non-free radical oxidation. The water treatment method comprises the following steps: adding soluble carbonate into sewage containing calcium ions to obtain calcium carbonate crystals, and then introducing ozone to oxidize the sewage to obtain purified water. According to the water treatment method provided by the invention, calcium carbonate can be generated in situ in the sewage, ozone is catalyzed by the calcium carbonate to be decomposed on the surface of the sewage to generate high-activity atomic oxygen, and efficient oxidative degradation of pollutants is realized through a direct electron transfer mechanism between the atomic oxygen and organic pollutant molecules. The method breaks through the limitation of a traditional free radical path, avoids the problem of hydroxyl free radical quenching, has the advantages of high catalytic efficiency, good stability, environmental friendliness and no need of additional addition of a catalyst carrier, can realize efficient removal of calcium ions in sewage, and can be widely applied to water treatment and deep treatment of refractory organic wastewater.
Owner:XI AN JIAOTONG UNIV

Drum type multi-temperature-zone vapor deposition growth and in-situ characterization cavity device

PendingCN119506838AGuaranteed to maximizecompact integrationChemical vapor deposition coatingThin membraneMechanical engineering
The invention provides a drum type multi-temperature-zone vapor deposition growth and in-situ characterization cavity device. Comprising a drum-shaped cavity shell mounted on an X-ray experiment detection device, a plurality of air inlet pipelines inserted into the drum-shaped cavity shell, a platform-type central heating module arranged in the drum-shaped cavity shell, heating sleeve-type two-side heating modules and an experiment sample table arranged below the drum-shaped cavity shell, a sample growth substrate can be arranged on the central heating module, each gas inlet pipeline is connected with the corresponding heating modules on the two sides, and different gas inlet pipelines are used for introducing different precursors and transporting gas. According to the drum-type multi-temperature-zone vapor deposition growth and in-situ characterization cavity device disclosed by the invention, through unique drum-type cavity design and independent and accurate control of multiple heating modules, the growth quality of a two-dimensional semiconductor film is improved, and in-situ observation requirements of a film growth structure and mechanism in different working condition environments are met.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI

Preparation method and application of a porous and transparent meat freshness ratio type fluorescent indicator film

The present application belongs to the field of intelligent indicating packaging of food, and particularly relates to a preparation method of a porous and transparent meat freshness ratio fluorescent indicating film and application thereof. The present application first synthesizes red fluorescent carbon quantum dots through a one-step hydrothermal method, then constructs a double-emission fluorescent probe with yellow-green fluorescent fluorescein, embeds the fluorescent probe in hydrophobic fibers through electrospinning technology to form a film, and finally prepares a porous and transparent meat freshness ratio fluorescent indicating film by applying mechanical pressure to the film. The indicating film prepared by the present application has high mechanical strength, high transparency and high fluorescence intensity, and the color change generated is more easily observed by the naked eye, so that consumers can determine the freshness of meat by observing the color change visible to the naked eye. Moreover, the indicating film has stronger flexibility and is suitable for the packaging field. In addition, the operation method and process of the present application are simple, the raw material cost is low, the raw material is easy to obtain and the industrialized production is easy to realize, so the present application has a wide application prospect.
Owner:YIXING INST OF FOOD & BIOTECHNOLOGY CO LTD +1

Preparation method and application of perylene diimide-based bimacrocyclic compound

ActiveCN119119045BGood water solubilityavoid quenching
The invention discloses a preparation method and application of a perylene diimide-based bimacrocyclic compound, comprising mixing an intermediate product A with TCBTA and a solvent, heating and stirring, washing with dichloromethane and water, and vacuum drying to obtain a red crude product B, mixing the intermediate product B with a hydrobromic acid solution, heating and refluxing, cooling, adding a NaHCO3 solution, filtering and washing, and drying to obtain a yellow powder C, mixing the intermediate product C with 4,4'-ethylene bipyridine or a derivative thereof, heating and stirring, centrifuging and precipitating, dissolving the precipitate in deionized water, adding an ammonium hexafluorophosphate solution, filtering, washing, and drying, and mixing with tetrabutylammonium chloride to obtain a perylene diimide-based bimacrocyclic compound. The present invention effectively prevents fluorescence quenching caused by chromophore aggregation, and simultaneously realizes PDI generated by reduction. ●– The compounds can be reduced in situ to PDI with near-infrared photothermal activity in the hypoxic microenvironment. ●– , has good near-infrared absorption properties and excellent photothermal conversion effect and biocompatibility.
Owner:CHINA NAT INST OF STANDARDIZATION

A three-axis vector superconducting coil winding device for physical property measurement under extreme conditions

The present invention belongs to the technical field of superconducting coil winding devices, and discloses a three-axis vector superconducting coil winding device for measuring physical properties under extreme conditions, comprising an integral coil frame, wherein a through-type cold hole is arranged at the center of at least one direction of the X-axis, Y-axis, and Z-axis directions of the integral coil frame, and coil component mounting grooves are symmetrically arranged at the connection between the surface of the integral coil frame and the two ends of the through-type cold hole, and a superconducting coil component is arranged inside the coil component mounting groove; the superconducting coil component comprises a superconducting coil arranged at the center of the coil component mounting groove, and a superconducting coil copper sheath is arranged on the surface of the superconducting coil. The magnetic field vector of any direction and required size in three-dimensional space is realized by superposition of three-axis orthogonal axial magnetic field vectors, and an experimental method in which the sample is not moved and the magnetic field angle rotates is realized, and the complex mechanical sample transmission mechanism is removed, and the heat load of the sample is effectively reduced, so that the sample can reach a lower experimental temperature.
Owner:XIAN JUNENG SUPERCONDUCTING MAGNET TECH

Surface imprinting fluorescence-surface enhanced Raman dual-sensing probe as well as preparation method and application thereof

PendingCN119290830AImprove selective recognitionavoid quenchingRaman scatteringFluorescence/phosphorescenceFluorescenceNitrobenzene
The invention relates to the technical field of nano material preparation and environmental analysis chemical detection, in particular to a surface imprinting fluorescence-surface enhanced Raman dual-sensing probe as well as a preparation method and application thereof. The probe is NH2-MIL-53 (Al) (at) MIPs / AuNPs, the NH2-MIL-53 (Al) (at) MIPs / AuNPs take NH2-MIL-53 (Al) as a core and take MIPs as a shell, a core-shell structure is formed, and AuNPs are subjected to in-situ reduction growth; a template molecule of the MIPs is p-nitrophenol, and a functional monomer of the MIPs is dopamine. Compared with the prior art, the surface imprinting fluorescence-surface enhanced Raman dual-sensing probe prepared by the invention combines two detection technologies to achieve dual signal recognition, has extremely high sensitivity and selectivity, and is suitable for detecting p-nitrophenol in samples with low concentration and complex components.
Owner:TONGJI UNIV

Quantum dot microspheres, color conversion screen applying quantum dot microspheres and preparation method of color conversion screen

The invention discloses quantum dot microspheres, a color conversion screen using the quantum dot microspheres and a preparation method of the color conversion screen. The preparation method comprises the following steps: firstly, uniformly distributing red quantum dots and green quantum dots in size-controllable microspheres through a microemulsion method to obtain quantum dot primary microspheres; coating the primary quantum dot microspheres with silicon dioxide, and modifying a surface ligand on the surface of the silicon dioxide to obtain quantum dot microspheres; the quantum dot microspheres prepared by the method are applied to a color conversion screen; the problems of quantum dot agglomeration, uncontrollable luminous intensity and fluorescence quenching caused by simple mechanical mixing of quantum dots and photoresist in the prior art are solved.
Owner:INST OF NEW DISPLAY TECH HENAN ACAD OF SCI

An apparatus and method for preparing a solid electrolyte membrane based on Joule heating technology

This invention discloses a device and method for preparing a solid electrolyte membrane based on Joule heating technology, belonging to the field of battery materials technology. The device includes a main body; a Joule heating element is disposed in the inner cavity of the main body; several slide rails are disposed on both sides of the Joule heating element, and the slide rails are fixedly connected to the inner wall of the main body; a temperature sensor that can slide vertically is disposed on the slide rail; the Joule heating element includes a heat-insulating sleeve, which is a hollow cylindrical structure with open ends; a detachable support is connected to the bottom of the heat-insulating sleeve; a semi-circular positive electrode interface and a negative electrode interface are respectively connected to both sides of the heat-insulating sleeve; pressure relief and temperature measurement holes are also provided on the side wall of the heat-insulating sleeve; an internal thread is provided on the upper inner wall of the heat-insulating sleeve for threaded connection with a pressure head; a ceramic preform is installed in the inner cavity of the heat-insulating sleeve; pads are disposed on both sides of the ceramic preform. This invention can achieve rapid densification and crystallization of the ceramic preform to obtain a high-performance solid electrolyte membrane.
Owner:XI AN JIAOTONG UNIV +1

Current lead joint structure and welding method thereof

ActiveCN116417814B
This invention provides a current lead connector structure and its welding method. The structure includes a welded tube, a current lead, a superconducting wire, and solder. The welded tube is a variable-diameter tubular structure, with the diameter gradually decreasing from the upper end to the lower end. The first section of the current lead is disposed inside the welded tube, and the second section is disposed outside the welded tube. The first section of the superconducting wire is a bare superconducting wire with its cladding removed, and the second section is a superconducting busbar with its cladding intact. The bare superconducting wire is disposed inside the welded tube and between the welded tube and the current lead, while the superconducting busbar is disposed outside the welded tube. Solder is laid inside the welded tube and completely submerges the bare superconducting wire. By heating and cooling the solder, the bare superconducting wire, the first section of the current lead, and the solder are fused together, thereby achieving the welding of the superconducting wire and the current lead. This invention solves the technical problems of high contact resistance at the solder joints, potential local hot spots, and difficulty in disassembly and assembly in existing current lead connector structures.
Owner:HIWING TECH ACAD OF CASIC

An organic compound with triarylamine as core and its application

The present invention discloses an organic compound with triarylamine as the core and its application, belonging to the field of semiconductor technology. The structure of the organic compound with triarylamine as the core of the present invention is shown in general formula (1); the organic compound of the present invention has a higher triplet energy level and a wider band gap, and also has a higher mobility. The device using the organic compound provided by the present invention can effectively improve the life of the OLED device through structural optimization.
Owner:JIANGSU SUNERA TECH CO LTD

Circularly polarized room-temperature phosphorescent material based on marine polysaccharide as well as preparation and application of circularly polarized room-temperature phosphorescent material

The invention belongs to the technical field of phosphorescent materials, and particularly relates to a circularly polarized room-temperature phosphorescent material based on marine polysaccharides and preparation and application thereof.The circularly polarized room-temperature phosphorescent material based on marine polysaccharides is prepared by the steps that 4-(4-bromophenyl)-pyridine and methyl iodide are dissolved in absolute ethyl alcohol, a reflux reaction is performed to prepare bromophenyl pyridinium, and the bromophenyl pyridinium is dissolved in absolute ethyl alcohol; dissolving the chiral marine polysaccharide lambda-type carrageenan containing the negative sulfate radical group and an achiral phosphorescent color body bromophenyl pyridinium containing the positive pyridine group in deionized water, performing ultrasonic heating until the solution is clear, and then gradually cooling and self-assembling to form a lambda-type carrageenan and bromophenyl pyridinium suspension; finally, the lambda-type carrageenan and bromophenylpyridinium suspension is subjected to vacuum drying, the circularly polarized room-temperature phosphorescent thin film material based on the marine polysaccharide is obtained, the material property is stable, the circularly polarized room-temperature phosphorescent thin film material can be applied to phosphorescent digital encryption, optical anti-counterfeiting and the like, the preparation method is simple and novel, the raw material source is wide, the cost is low, and industrial production is facilitated. The method has important significance for designing and preparing CP-RTP materials based on natural macromolecules.
Owner:QINGDAO UNIV

Thermal insulation device for optical fiber drawing

The invention provides a thermal insulation device for optical fiber drawing, comprising: a mounting seat for mounting on an optical fiber drawing production line; the translation mechanism is movably connected to the mounting seat; the lifting mechanism is connected to the translation mechanism; the heat preservation assembly is connected to the lifting mechanism, the lifting mechanism drives the heat preservation assembly to move in the axial direction of the heat preservation assembly, the translation mechanism drives the heat preservation assembly to move in the plane direction of the heat preservation assembly, and an optical fiber penetrates through the heat preservation assembly. The thermal insulation device for optical fiber drawing is high in flexibility and compatibility, and can meet the production requirements of different types of optical fibers. Moreover, the thermal insulation device is good in sealing performance, can prevent air from entering to cause shock cooling, and reduces the internal stress of the optical fiber.
Owner:ZHONGTIAN TECH FIBER OPTICS +3

Adjustable faucet convenient and fast to use

The utility model provides an adjustable portable faucet, and relates to the field of faucets. The connecting body is of a three-way tubular structure, a rotating shaft is installed at the top end of the connecting body through a mixing assembly, a control piece is fixed in the rotating shaft and drives the control piece to rotate within the 90-degree range, and the side edge of the control piece of a circular structure is of a conical structure. The water outlet pipe is controlled to rotate conveniently through the auxiliary groove and the bubbler assembly, the water outlet angle is adjusted, convenience is improved, and if the water pressure is large and a water column is separated from the bathroom tub, the control piece is driven to rotate through the rotating shaft, so that the control piece is located in the mixing assembly and blocks rapidly-circulating water; the water speed is slowed down, the situation that the water column is separated from the bathroom tub due to too large water pressure is avoided, and the problems that according to a common adjustable convenient faucet, after the angle of the faucet is adjusted, if the water pressure is large, the water column is separated from the bathroom tub, and water falls on the ground are solved.
Owner:WENZHOU CLOUD LEGEND HOME FURNISHING CO LTD

Fluorescent polyolefin adhesive as well as preparation method and application thereof

PendingCN122080821Aexchange activity regulationImprove hydrophobicity and oleophobicityNon-macromolecular adhesive additivesMacromolecular adhesive additivesElastomerAdhesive cement
The invention discloses a fluorescent polyolefin adhesive as well as a preparation method and application thereof, and relates to the technical field of high polymer materials and adhesives. The fluorescent polyolefin adhesive comprises polyolefin elastomer grafted allyl alcohol glycidyl ether, hydrophobic group substituted binary acid, hydrogenated hydrocarbon resin, an AIE fluorescent material and a transesterification catalyst. Through an integrated molecular design and a simple preparation process, the self-healing performance, the fluorescent tracing performance, the corrosion resistance and the high bonding performance are efficiently integrated in a single material system, complex multi-step processing or post-processing is avoided, and the feasibility requirements of industrial production and application are met. The adhesive material can fundamentally change the traditional mode of'silent failure 'of an adhesive joint structure, strides towards a new normal form of'intelligent sensing, self-repairing and long-acting protection', and has great application value in the fields of new energy automobile battery sealing, ocean engineering protection, precise electronic packaging, high-end intelligent equipment manufacturing and the like.
Owner:LIYANG EXCELLENCE NEW MATERIAL TECH CO LTD +1

Boron-containing compound and organic electroluminescent device using the same

The present invention relates to a novel organic compound having the structure of the following formula (1): Rings A, B, C, D, and E independently represent aromatic rings or heteroaromatic rings, and two adjacent rings can be fused to form a ring containing X 1 or X 2 A five-membered ring or a six-membered ring; X 1 and X 2 are independently selected from one of O, S, N, C, and Si; m and n are independently 0, 1 or 2, and R 1 To R 5 They are independently selected from hydrogen, C1-C10 chain alkyl, C3-C10 cycloalkyl, C1-C10 alkoxy, halogen, cyano, nitro, hydroxyl, ester, silyl, amino, arylamino, heteroarylamino, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, and at least one of them is of formula (2). When the compound of the present invention is used as a light-emitting layer material in an OLED device, it exhibits excellent device performance and stability. The present invention also protects an organic electroluminescent device using the compound of the above general formula.
Owner:BEIJING DINGCAI TECHNOLOGY CO LTD

A composition for a light-emitting layer and an organic electroluminescent device comprising the same

PendingCN122318718AGood hole balanceavoid quenchingHost materialOrganic electroluminescence
This invention relates to a composition for a light-emitting layer and an organic electroluminescent device comprising the same, belonging to the field of display and lighting technology. The composition for the light-emitting layer includes a first host material, a second host material, and a boron-containing fluorescent material. The first host material is selected from the structure shown in general formula (A-1) or general formula (A-2), the second host material is selected from the structure shown in general formula (B), and the boron-containing fluorescent material is selected from the structure shown in general formula (C-1) or general formula (C-2). By using a composition formed by a first host material, a second host material, and a boron-containing fluorescent material with a specific structure in the light-emitting layer of an organic electroluminescent device, the efficiency and lifespan of the device can be effectively improved.
Owner:JIANGSU SUNERA TECH CO LTD

A superconducting magnet cold head start-up adaptive system and control method

ActiveCN122291224BSuppress instantaneous heating shockReduce severe disturbances
The application discloses a superconducting magnet cold head starting adaptive system and a control method, relates to the technical field of superconducting magnets, and discloses a superconducting magnet cold head starting adaptive system, which comprises a cold head, a frequency converter and a control unit. The cold head is used for cooling a superconducting coil, and the cold head comprises a driving motor, which is used for driving a piston inside the cold head to reciprocate to realize refrigeration. The frequency converter is electrically connected with the driving motor and is used for adjusting the working frequency of the driving motor. The control unit is signal-connected with the frequency converter, and the control unit is configured to: when it is detected that the cold head needs to be restarted after shutdown, control the frequency converter to drive the driving motor to operate at a first frequency which is lower than a preset working frequency, and when a preset condition is met, control the frequency converter to drive the driving motor to return to the preset working frequency. In this way, when the superconducting magnet is started again due to the shutdown of the cold head, the instantaneous heating impact inside the cold head can be avoided, and the superconducting coil temperature is prevented from rising sharply to cause quenching.
Owner:NINGBO JANSEN NMR TECH CO LTD

A method for treating harmful algal bloom water body by in-situ strengthening an enzymatic fenton reaction system with ultraviolet light

The application discloses a method for treating harmful algal bloom water by using an ultraviolet light in-situ reinforced enzymatic Fenton reaction system, which comprises the following steps: feeding the harmful algal bloom water into a reaction chamber, then adding glucose oxidase, glucose and green rust into the water in the reaction chamber, and applying ultraviolet light to the water in the reaction chamber to initiate a Fenton-like reaction, so that the harmful algal bloom water is treated, and the treated water is discharged from the reaction chamber. The method makes full use of the high-dissolved-oxygen environment of the harmful algal bloom water, combines the ultraviolet light with the enzymatic Fenton reaction system, controls the slow release of H2O2 in-situ, improves the types and quantity of oxidizing active substances, and improves the catalytic capacity of the enzymatic Fenton reaction system by using the ultraviolet light, so that the algae is removed in the natural water environment in a mild and efficient manner, the integrity of the algae cells is maintained to the maximum extent, and the release of intracellular organic matters is avoided.
Owner:SHENZHEN RES INST OF WUHAN UNIV OF TECH

Automatic quenching equipment for surface of steel casting

The invention provides steel casting surface automatic quenching equipment which comprises a shell, a protective frame is fixedly mounted at the top of the shell, mounting racks are fixedly mounted at the tops of the two sides of the protective frame, electric telescopic rods are fixedly mounted at the tops of the mounting racks, and a supporting plate is arranged at the bottoms of the electric telescopic rods; and a surrounding plate is mounted at the top of the supporting plate. According to the automatic quenching equipment for the surface of the steel casting, through mutual cooperation of the shell, the protective frame, the mounting frame, the electric telescopic rod, the supporting plate, a surrounding plate, a sliding rod and other structures, when the automatic quenching equipment is used, the steel casting needing to be quenched is placed on the supporting plate, and then a user gets away from the shell; and then an electric telescopic rod extends, so that a supporting plate drives the steel casting to move to the inner side face of the shell, liquid in the shell plays a role in quenching the steel casting, in this way, it can be avoided that a user holds the steel casting by hand for quenching, and therefore the safety is improved.
Owner:山东润金重工科技有限公司

High-temperature superconducting pancake coil for magnetic confinement device

The utility model discloses a high-temperature superconducting cake coil for a magnetic confinement device, which comprises a hollow shell, a cake coil is fixedly connected in the shell, and a sectional optical fiber temperature sensor detection end is connected between the lower end of the cake coil and the lower end in the shell. The right side of the shell is fixedly connected with a circuit interface, the cake coil and the detection end of the sectional optical fiber temperature sensor are electrically connected with the circuit interface, the circuit interface is electrically connected with the control end, the upper end and the lower end of the left side of the shell are fixedly connected with liquid nitrogen inlet and outlet interfaces, and the liquid nitrogen inlet and outlet interfaces are communicated with the interior of the shell. According to the high-temperature superconducting cake type coil for the magnetic confinement device, quenching is prevented through liquid nitrogen continuous cooling and temperature monitoring, a problem area is accurately positioned through a segmented optical fiber sensor, a circuit interface integrates control and communication, on-off can be conducted in time, and the effect of preventing fusing or damage to equipment is achieved.
Owner:HEJU (SHANGHAI) ENERGY TECHNOLOGY CO LTD