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640results about How to "Small temperature change" patented technology
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Heat pump system and defrosting control method thereof
InactiveCN106766328AImprove defrosting efficiencySmall temperature changeMechanical apparatusSpace heating and ventilation safety systemsEngineeringFour-way valve
The invention discloses a heat pump system and a defrosting control method of the heat pump system. The heat pump system comprises a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger and a heating device. The outdoor heat exchanger is a microchannel heat exchanger. When the system conducts defrosting, at least one flat pipe in the microchannel heat exchanger can be heated through the heating device. According to the heat pump system, defrosting is uniform, the defrosting efficiency can be improved, the system still can heat a room in the defrosting process, the indoor side temperature change range in the defrosting process is lowered, and the system comfort and defrosting efficiency are improved.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
Microchannel heat exchanger with micro-encapsulated phase change material for high flux cooling
ActiveUS20060231233A1Improve cooling efficiencySmall temperature changeHeat storage plantsSemiconductor/solid-state device detailsParticulatesHigh flux
A microchannel cooler containing a slurry having a particulate liquid / solid phase change material is provided balancing the interdependent factors of microencapsulated particle size with microchannel size and shape and flow conditions for the removal of high heat flux with low space and low power requirements.
Owner:FARID MOHAMMED MEHDI +1
Magnetic field measuring apparatus
InactiveUS20090001979A1Guaranteed monitoring effectQuickly bringGaseous masersMagnetic field measurement using magneto-optic devicesMagnetic tension forceTemperature control
Providing: quickly brining a vapor cell 119 to a desired temperature when retaining the heat of the vapor cell 119 to enhance the magnetic field detection performance of an optically pumped magnetometer; preventing adherence of atoms in the vapor cell 119 to a laser irradiation light passing-through part of the vapor cell 119; downsizing the periphery of the vapor cell 119; and suppressing the effect of a magnetic field from a heater used to retain the heat of the vapor cell 119. The present invention includes: a transparent film heater 118 provided to a laser irradiation light passing-through part of a vapor cell 119, the vapor cell 119 being a magnetic detection part of the optically pumped magnetometer; a temperature detector 115 provided at a center part of a side of the vapor cell 119; a temperature regulator 111 that sets a desired temperature for heat retention of the vapor cell 119 and compares the desired temperature and the actual temperature of the vapor cell measured by the temperature detector 115; an operation unit 112 that upon receipt of a PID control signal for temperature control from the temperature regulator 111, performs a temperature adjustment and switches on / off, in a pulsed manner, current applied to the transparent film heater 118 after the desired temperature is reached; and a heater power supply 113 that upon receipt of an operation signal from the operation unit 112, applies current to the transparent film heater 118.
Owner:HITACHI HIGH-TECH CORP
Large scale wind power machine control method based on maximum energy capture
InactiveCN101054951ASmall temperature changeImprove working characteristicsWind motor controlMachines/enginesMachine controlMaximum energy capture
The present invention relates to method for controlling the output power of a wind turbine having maximum energy capture in wind power generation field. When the wind speed varies between a cut-in wind speed and a rating wind speed, a speed change control method is adopted to track the best power curve and to obtain maximum power; when the wind speed varies between the rating wind speed and a cut-out wind speed, a blade change control method is adopted to regulate the change of the blade distance angle for the blade and hold the rating power invariable. The present invention can select different control method based on the wind speed to realize the maximum power output for the wind turbine, thereby can improve the wind energy using efficiency for the generator unit and ensure the stability and reliability of running of the wind turbine.
Owner:SHANGHAI JIAO TONG UNIV
Microchannel heat exchanger with micro-encapsulated phase change material for high flux cooling
ActiveUS8109324B2Improve cooling efficiencySmall temperature changeHeat storage plantsSemiconductor/solid-state device detailsParticulatesHigh flux
A microchannel cooler containing a slurry having a particulate liquid / solid phase change material is provided balancing the interdependent factors of microencapsulated particle size with microchannel size and shape and flow conditions for the removal of high heat flux with low space and low power requirements.
Owner:FARID MOHAMMED MEHDI +1
Hot melt pressure sensitive adhesive and preparation method thereof
ActiveCN102504735ASmall temperature changeGood initial adhesionMineral oil hydrocarbon copolymer adhesivesConjugated diene hydrocarbon adhesivesPlasticizerHot melt
The invention provides a hot melt pressure sensitive adhesive and a preparation method thereof, which solve the problems of improving initial tack, oil penetration and die cutting property, etc. The hot melt pressure sensitive adhesive comprises the following components by weight: 25-40 parts of matrix resin, 48-60 parts of tackifier, 12-22 parts of plasticizer and 0.6-1.2 part of a stabilizing agent, wherein the matrix resin comprises triblock copolymer of styrene-isoprene-styrene and diblock copolymer solution-polymerized styrene butadiene rubber of styrene-butadiene in a weight ratio of 1.2-3.1. The hot melt pressure sensitive adhesive provided by the invention has better initial tack, high peel strength and standard holding power; the hot melt pressure sensitive adhesive is free of oil penetration for seven days under heat temperature testing conditions and can be stored for one year at the normal temperature without oil penetration; the adhesive has better die cutting property; and the softening point reaches to 115 DEG C. The hot melt pressure sensitive adhesive of the invention can totally meet the requirement on fabricating back adhesive bags, labels and adhesive tapes.
Owner:河北方大新材料股份有限公司
Magnetic field measuring optically pumped magnetometer apparatus
InactiveUS7652473B2Convenient and accurateRapid temperature measurementPulse automatic controlGaseous masersTemperature controlControl signal
Owner:HITACHI HIGH-TECH CORP
Planting method of ecological pear
InactiveCN104303939AImprove temperature conditionsAvoid influenceRenewable energy machinesCultivating equipmentsPesticide residuePear tree
The invention discloses a planting method of an ecological pear. The ecological pear without pesticide residue is planted by adopting a grass culturing and intercropping mode, adopting an organic fertilizer as a main fertilizer, and using physical and trapping ways to kill insects. According to the planting method, the problems that an existing pear tree planting method is low in the land use rate, high in pesticide residue and low in fruit quality can be overcome; furthermore, the planting method is free from pesticide residue and high in fruit quality, and the land can be effectively used.
Owner:GUIZHOU SHANLIHONG FRUIT & VEGETABLE DEV
Method for preparing fuel gas by gasifying biomass materials and device thereof
InactiveCN101649226AReduce cloggingSolve the blockageCombined combustion mitigationCombustible gas productionTarProcess engineering
The invention relates to a method for preparing fuel gas by gasifying biomass materials and a device thereof, belonging to the technical fields of methods for preparing fuel gas by solid biomass materials in a gasifying process and the devices thereof. The method comprises the following steps: feeding, gasifying, dedusting, spraying and purifying, detarring, pumping front-end gases and conveying rear-end fuel gas by a Roots blower, and conveying the fuel gas to a fuel gas storage cabinet through a tempering preventing device. The device realizing the method comprises a feeding mechanism, a controllable gasifying furnace and a circulation water pump, a gravity deduster, a spraying purifier and a spraying pump, a biomass tar purifier, the Roots blower, the tempering preventing device and thefuel gas storage cabinet. The device is used for transforming the solid biomass materials of straws and the like into the fuel gas with less impurities and high heat value and supplying the fuel gasfor users centrally.
Owner:ZHENYU COMPLETE SET ELECTRIC EQUIP GROUP BEIJING
Ultrasonic probe and ultrasonic diagnostic apparatus
InactiveCN1765329AImprove cooling efficiencyEasy to operateUltrasonic/sonic/infrasonic diagnosticsMaterial analysis using sonic/ultrasonic/infrasonic wavesTransducerEngineering
The present invention provides an ultrasonic probe including a vibrator unit, a heat receiving unit, a cooling unit, and a cable unit, and an ultrasonic diagnostic apparatus. The cable part has signal lines, refrigerant supply pipes, refrigerant discharge pipes and heat insulation materials. The heat receiving portion absorbs heat generated from the vibrator portion. The refrigerant supply pipe transports the refrigerant from the cooling unit to the heating part. The refrigerant discharge pipe transports the refrigerant that discharges the heat of the heat receiving part to the cooling unit. The heat insulating material is provided on the outer periphery of the refrigerant supply pipe. The set of the refrigerant supply pipe, the refrigerant discharge pipe, and the heat insulating material is arranged substantially at the center of the cable portion, and the signal line is arranged around at least one of the refrigerant supply pipe, the refrigerant discharge pipe, and the heat insulating material.
Owner:TOSHIBA MEDICAL SYST CORP
Micro nuclear battery with protection ring structure and manufacturing method thereof
InactiveCN101599308ASmall temperature changeImprove energy conversion efficiencyRadiation electrical energyElectrical batteryEngineering
The invention discloses a PN junction or PIN junction type micro nuclear battery and a manufacturing method thereof, belonging to the fields of semiconductor, nuclear physics and micro energy source. The battery is provided with a protection ring 6 in the periphery ring-shaped region of a p+ type semiconductor layer 5 on the basis of traditional PN junction or PIN junction type micro nuclear battery; meanwhile a protection ring contact electrode 8 is arranged above the protection ring 6 for leading an electrical signal out; in addition, the manufacturing method of the nuclear battery is also disclosed. In the micro nuclear battery disclosed by the invention, the added protection ring inhibits surface leakage and influence of interface state current on radiation induced current, indirectly increases open circuit voltage, and also improves sensibility of elements on low-energy radioactive source, thus improving energy conversion efficiency of elements.
Owner:江苏福克斯电气集团有限公司 +1
Prober
ActiveUS20150137842A1DownsizeHigh measurement accuracyBipolar transistor testingElectronic circuit testingSupport surfaceContactor
A prober includes: a wafer chuck having a conductive support surface; a movement rotation mechanism which moves and rotates the wafer chuck; a head stage which holds a probe holding portion; a stage member which has a conductive stage surface that is formed in parallel to the support surface and electrically connected with the support surface, and can move integrally with the wafer chuck; and a contactor which is fixed to a position facing the stage member and whose tip can electrically come into contact with the stage surface, wherein the stage member is separated from the wafer chuck as a separate body, and the stage surface and the support surface are electrically connected through a wiring member; and a back-surface electrode of a chip is electrically connected with a tester through the wafer chuck, a wiring, the stage member and the contactor.
Owner:TOKYO SEIMITSU
Illumination device and liquid crystal display device
ActiveUS8111371B2Accurate temperature detectionSmall temperature changeStatic indicating devicesLighting heating/cooling arrangementsElectrical resistance and conductanceLiquid-crystal display
An illumination device includes an LED package, an LED driver including an FET, and a thermistor disposed on a substrate. A plurality of such LED packages are disposed on the substrate such that a first area and a second area, each determined by vertices corresponding to LED packages, are defined on the substrate. The thermistor is disposed in the first area, and the FET is disposed in the second area, which is outside of the first area. The thermistor detects a temperature in the first area. Such a configuration allows the thermistor to detect, in accordance with the temperature in the area, the temperature of heat transferred from the LED packages, without being affected by heat generated by the FET. This makes it possible to efficiently make temperature corrections to stabilize color temperature and luminance.
Owner:SHARP KK
Composite phase transition cooling bituminous paving material
InactiveCN103508701AReduce the temperatureSmall temperature changeClimate change adaptationAggregate (composite)Urban heat island
The invention provides a composite phase transition cooling bituminous paving material, wherein the material can be used for preparing a set composite phase transition material from a phase transition material with an energy storage efficacy by a sol-gel method, drying, grinding and surface hydrophobic modification are carried out, the set composite phase transition particles are obtained after dried, the set composite phase transition particles after screened is used to replace an aggregate or a filling material with certain particle sizes in an asphalt mixture, and then the composite phase transition cooling bituminous paving material is obtained. The material has a good effect for reducing the bituminous paving temperature, can raise high temperature stability of the bituminous paving, and can simultaneously relieve urban heat island effect.
Owner:CHONGQING JIAOTONG UNIVERSITY
A method for monitoring deep foundation subsidence
ActiveCN102288157ASmall temperature changeReduce the effects of temperature changesHydrostatic levellingControl systemCurve fitting
The invention relates to a method for monitoring the deep settlement of a foundation, which is characterized in that: a liquid level static pressure monitoring method is adopted; in the liquid level static pressure monitoring method, a container provided with a pressure sensor and a secondary instrument is adopted, taken as a pressure measuring reference container and fixed on the ground which isnot influenced by the foundation settlement; the height of a pressure sensing surface of the pressure sensor is greater than that of any one embedded settlement instrument; the embedded settlement instrument consists of a shell, a three-way joint, a pressure sensor, a secondary instrument circuit and a serial bus circuit and is electrically connected with other embedded settlement instruments anda ground measurement and control system through an electric serial bus; and the measurement and control system records a pressure value of each detection point, converts the pressure value into a foundation settlement value, and performs curve fitting to obtain a foundation section settlement outline.
Owner:上海同禾工程科技股份有限公司
Crystal oscillator
InactiveUS7088032B2Easy to mass produceOscillation frequency is stableImpedence networksPiezoelectric/electrostriction/magnetostriction machinesEngineeringCrystal oscillator
Owner:NIHON DEMPA KOGYO CO LTD
Heat pump system and defrosting control method thereof
InactiveCN106556078AEven defrostingSmall temperature changeMechanical apparatusSpace heating and ventilation safety systemsFour-way valveEngineering
The invention discloses a heat pump system and a defrosting control method thereof. The heat pump system comprises a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger and a heating device. The outdoor heat exchanger is a micro-channel heat exchanger; and during system defrosting, the heating device can heat at least one header pipe of the micro-channel heat exchanger. According to the heat pump system, defrosting is even, the defrosting efficiency can be improved, the system can still heat the indoor space in the defrosting process, the temperature variation amplitude of the indoor side in the defrosting process is reduced, and the system comfort and the defrosting efficiency are improved.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
Duct Smoke Detection System and Method
ActiveUS20110094294A1Limited amountLess laborFire alarmsFluid-tightness measurement using fluid/vacuumSmoke detectorsEngineering
An assembly for testing of smoke detectors, installed to detect the presence of smoke in ductwork or through a smoke protected opening, and includes a plenum rated hose assembly having a duct end and a smoke end. The hose assembly smoke end is extendable to within the duct and is terminated with a nozzle directable at an inlet tube of a smoke detector associated with the duct, or to the detector protecting a smoke protected opening. A duct mounting plate is adapted to be sealingly installed to cover an aperture formed within the duct and to retain the hose assembly duct end. Smoke is directed into the hose smoke end. The smoke exits the hose through the nozzle and towards the inlet tube of the duct-mounted smoke detector, or towards the detector for a smoke protected opening, for testing of the smoke detector.
Owner:TOWNSEND ROBERT L +1
Series cooled module cooling fin
InactiveUS20140308551A1Preserve relative commonalityImprove temperature uniformitySecondary cellsPower to auxillary motorsAutomotive batteryHeat transfer
An automotive battery module with numerous battery cells and a series-based cooling fin arrangement placed in thermal communication with at least two of the battery cells. Heat generated within the battery cells by, among other things, electric current that can be used to provide motive power for the automobile, may be removed by the cooling fin that includes different portions tailored to remove relatively lesser or greater amounts of heat, depending on a potential temperature difference among the cells. The construction of the cooling fin is such that multiple heat transfer paths are established, each configured to convey heat away from the battery cells, as well as to keep temperature differences between adjacent series-cooled battery cells to a minimum. In one form, the multiple heat transfer paths may include a relatively laminar portion and a relatively turbulent portion, where in one form the increased turbulence may be obtained through numerous turbulators. Other such heat transfer paths may include an intermediate exhaust path, a discreet coolant channel or the like. Any or all of the turbulators, exhaust path or discreet coolant channel may be tuned in order to increase or decrease an amount of heat delivered to the cooling fin from the battery cells.
Owner:GM GLOBAL TECH OPERATIONS LLC
Radial rotary forging precision forging process and radial rotary forging device for shaft part blind hole
ActiveCN109622849ATotal Deformation Ratio IncreaseIncrease production capacityPower hammersManufacturing efficiencyEngineering
The invention provides a radial rotary forging precision forging process and a radial rotary forging device for a shaft part blind hole. The radial rotary forging device includes a core rod, a core rod operating machine, to-be-processed rods, a GFM rotary forging precision forging machine, and a driving clamping head; the GFM rotary forging precision forging machine comprises a left upper hammer head, a left lower hammer head, a right upper hammer head and a right lower hammer head, and the to-be-processed rods are placed between the left upper hammer head, the left lower hammer head, the right upper hammer head and the right lower hammer head; and one end of each to-be-processed rod is clamped on the driving clamping head, the other end of each to-be-processed rod is propped against the core rod, and the end, propped against on the core rod, of each to-be-processed rod is the to-be-processed blind hole end. Compared with a traditional processing technology, the radial rotary forging precision forging process and a radial rotary forging device have the following advantages that (1) materials are saved, processing hours are shortened, the materials are saved, the efficiency is improved, and the manufacturing efficiency is an urgent need for wartime military supply; and (2) the forging performance is high, and compared with an original processing technology, the strength of a shell is greatly improved.
Owner:山东泰和能源股份有限公司
Method for cooling hot strip
ActiveUS20100192658A1Reduce temperature changesAvoid instabilityShaping toolsTemperature control deviceThermal instabilityWater flow
A method for cooling a hot strip with less facilities and processing costs in which the temperature variation of a strip after cooling is controlled to be small and a cooling end temperature can be precisely controlled particularly when the hot strip is cooled to the temperature range of 500° C. or less is provided. The method for cooling a hot strip, which is obtained after a hot rolling process, by bringing cooling water into contact with the hot strip, includes a first cooling step and a subsequent second cooling step. In this method, cooling is stopped at a strip temperature that is higher than a transition boiling initiation temperature in the first cooling step, and the cooling is conducted using the cooling water having a water flow rate that causes nucleate boiling in the subsequent second cooling step. Entering the temperature range of transition boiling can be completely prevented to avoid thermal instability in cooling resulting from the transition boiling, and the temperature variation of the strip after cooling is controlled to be small while the cooling end temperature can be precisely controlled.
Owner:JFE STEEL CORP
Combustion apparatus
InactiveUS6224370B1Improve performanceSmall temperature changeCapillary burnersCombustion using catalytic materialCombustionEngineering
A combustion apparatus has a fuel supply section; an air blowing section for supplying combustion air; a mixing section for mixing the fuel with the combustion air; a plurality of first catalyst bodies which are arranged substantially in parallel with each other to divide the downstream location in the flow direction of mixture into a plurality of flow paths; and a first heat receiving section configured by a plurality of heat receiving fins arranged in flow paths divided by said first catalyst bodies and a cooling path penetrating the heat receiving fins, the opposed heat receiving fin and first catalyst body being characterized in that the area of the heat receiving fin on the upstream side of said cooling path is smaller than the area of the first catalyst body on the upstream side of the cooling path.
Owner:PANASONIC CORP
Temperature equality device and temperature equality method in glass forming
InactiveCN101012098AReduce thicknessReduce curvature changesGlass forming apparatusThermal energyDisplay device
The invention discloses a temperature evening device and method in the glass moulding course, which comprises the following parts: moulding bulk to overflow fusing glass, heating moulding space with top heating element and lateral heating element, insulating part on the exterior of top heating element and lateral wall heating element, board-shaped temperature evening device on the periphery between overflow glass liquid moulding bulk and heating element, wherein the board-shaped temperature evening device gathers glass fusing heat to heat glass at face irradiation pattern, which makes glass flow obtain even temperature; the distance between board-shaped temperature evening device and fusing glass and relative position of back heating element are adjusted to control temperature of fusing glass temperature.
Owner:HENAN ANCAI HI-TECH +1
Soft magnetic NiCuZn ferrite material with characteristics of wide temperature range, low temperature coefficient, high frequency and low loss, and preparation method thereof
ActiveCN103693949ASmall temperature coefficientSmall temperature changeInorganic material magnetismTemperature coefficientFerrite (magnet)
The present invention discloses a soft magnetic NiCuZn ferrite material with characteristics of wide temperature range, low temperature coefficient, high frequency and low loss, and a preparation method thereof. The soft magnetic NiCuZn ferrite material comprises a main component and a sub-component, wherein the main component comprises 51-59 mol% of Fe2O3, 10-22 mol of NiO, 20-35 mol% of ZnO, and 0.3-8 mol% of CuO, and the sub-component comprises (by the total weight of the main component) two or more than two components selected from 0.05-1.0 wt% of Mn3O4, 0.05-0.9 wt% of SiO2, 0.01-0.5 wt% of Bi2O3, 0.01-0.8 wt% of TiO2, 0.01-0.6 wt% of CaCO3, and 0.01-0.3 wt% of Co2O3. The soft magnetic NiCuZn ferrite material can be used in the wide temperature range of -40 to 120 DEG C, and has characteristics of low temperature coefficient, low magnetic permeability change along with temperature change, and low loss.
Owner:HENGDIAN GRP DMEGC MAGNETICS CO LTD
Method of continuous concentrated acid hydrolysis of organochlorosilane
The invention relates to a method of continuous concentrated acid hydrolysis of organochlorosilane. The method comprises the following steps: step 1, the organochlorosilane is subject to hydrolysis reaction with a concentrated acid in a hydrolysis reactor to produce a hydrochloric acid with higher concentration, and a crude hydrolysate; step 2, after the liquid produced after hydrolysis reaction is separated through a preliminary separator, the concentrated acid enters a falling-film evaporator to generate HCL (hydrogen chloride) gas for production of methyl chloride through heat exchange; the concentrated acid at the tower bottom enters the hydrolysis reactor for cyclic use; the oil phase separated by the preliminary separator enters a primary phase separator and a secondary phase separator, the separated acid liquor returns to the hydrolysis reactor for cyclic use, and the oil phase enters the subsequent water washing procedure; and step 3, the two-stage series water-washing and the phase separation are carried out to the oil phase in the water washing procedure, then the recycle washing with a dilute alkali lye and the phase separation are carried out, and finally, the latest two-stage series water-washing and the phase separation are carried out; and the washed oil phase is a siloxane oligomer.
Owner:QINGDAO UNIV OF SCI & TECH
High performance middle and low temperature sintered high-voltage ceramic capacitor medium
The invention provides a medium of a high-voltage ceramic capacitor with high performance and middle-low temperature sintering, which relates to the technical field of inorganic non-metal material. The invention adopts the prior method for preparing the medium of the high-voltage ceramic capacitor to prepare the medium of the high-voltage high-stability ceramic capacitor containing no lead, cadmium or other toxicities, and having high performance and middle-low temperature sintering (the sintering temperature is between 1,100 and 1,150 DEG C) by the prior chemical raw materials of capacitor ceramics. The medium is applicable to the preparation of single-chip ceramic capacitor and multi-layer tablet ceramic capacitor so as to greatly reduce the cost for the ceramic capacitor and avoid environmental pollution during preparation and application. The medium is characterized in that the medium comprises the following compositions (in weight percentage): 58 to 92 percent of BaTiO3, 2 to 19 percent of SrTiO3, 0.5 to 10 percent of CaZrO3, 0.05 to 1 percent of Nb2O5, 0.03 to 1.0 percent of Y2O3, 0.03 to 1.0 percent of Co2O3, and 6 to 30 percent of Bi2Sn2O7, wherein each of the BaTiO3, the SrTiO3 and the CaZrO3 is synthesized by a solid phase method by the prior chemical materials. The medium has high voltage resistance reaching over 10kilovolt / millimeter, specific inductive capacity of between 2,200 and 3,500 and small variance ratio of capacitance temperature, accords with the requirement on X7R property, Y5T and Y5U property, has excellent stability and high security when used, and does not pollute environment.
Owner:JIANGSU UNIV
Quantitative detection calculation method based on fluorescent immuno-chromatographic technology
InactiveCN106645708ALess power consumptionIncrease heatFluorescence/phosphorescenceFilter algorithmLight-emitting diode
The invention relates to the field of immuno-chromatographic detection, in particular to a quantitative detection calculation method based on fluorescent immuno-chromatographic technology. The method includes the steps: inserting a fluorescent immuno-chromatographic test strip dripping sample solution to be measured into a fluorescent immunity analyzer; irradiating by the aid of LED (light-emitting diode) light sources; performing light filtering treatment by the aid of a light filter; detecting by the aid of a photoelectric detector; treating electric signals; performing AD conversion treatment; performing filtering algorithm treatment; performing baseline fitting; performing peak searching treatment; calculating T / C area ratio; calculating concentration; judging by the aid of calculated concentration results. The invention provides a perfect, rapid and quantitative detection calculation method based on the fluorescent immuno-chromatographic technologies. Various noise and signal interference can be filtered when concentration of objects to be measured is detected and calculated, and accurate detection results are improved. The method has the advantages of high accuracy and stability and low power consumption, and rapid and quantitative detection requirements of users are effectively met.
Owner:BIOHIT BIOTECH HEFEI
Garnet ferrite and a non-reciprocal circuit element applying the same
InactiveCN1600741AReduce lossesSmall temperature changeIron compoundsWaveguide type devicesElectricityEngineering
A garnet ferrite for a non-reciprocal circuit element expressed by the formula Y3-xGdxFet-2y-zCoySiyAlzO12 (where 0.2<=x<=1.5, 0.005<=y<=0.015, 0<=z<=1.5, 4.75<=t<=5) is provided. The absolute temperature coefficient alphaof 4piMs and the ferromagnetic resonance half-width DeltaH are low. In addition, an isolator is provided, wherein the isolator includes a magnetic assembly made up of a main body (the garnet ferrite element) and a plurality of center conductors disposed on the upper surface of the main body so that each of the center conductors intersect at a predetermined angle while being electrically insulated from each other, a magnet for applying a direct current magnetic field to the magnetic assembly, matching capacitors, and a yoke (upper and lower cases) for holding all the components. Loss is low in a high-frequency band, such as the microwave band.
Owner:ALPS ALPINE CO LTD
Halogen-free flame-retardant POE (Polyolefin Elastomer) compound material and preparation method thereof
The invention discloses a halogen-free flame-retardant POE (Polyolefin Elastomer) compound material and a preparation method thereof. The halogen-free flame-retardant POE compound material is prepared from the following components in parts by weight: 100 parts of POE resin, 70-140 parts of halogen-free compound retardant, 5-30 parts of modifier, 3-10 parts of lubricating dispersing agent and 0.1-0.6 parts of anti-oxidant. The preparation method comprises the following steps of: putting the POE resin, the halogen-free retardant, the modifying agent, the lubricating dispersing agent and the anti-oxidant into a high-speed mixing machine for mixing till the materials are heated to 65-75 DEG C through frication heat generated by mixing, discharging and cooling; and feeding a cooled mixed material into a double-screw extruder for melting and extruding, cooling an extruded bar stock with a water groove, and drawing into a granulating machine for granulating to obtain the halogen-free frame-retardant POE compound material. The elongation rate of the halogen-free flame-retardant POE compound material is over 600 percent, the oxygen index is over 30 percent, the liquidity of a melt is high, and the heat ageing resistance is high.
Owner:JIANGSU UNIV OF TECH
System and method for automatically and circularly complementing crystalline-silicon solar cell texture etch solution
ActiveCN101667608AImprove concentration uniformityImprove consistencyFinal product manufactureSemiconductor devicesCircular loopEngineering
The invention relates to a system and a method for automatically and circularly complementing a texture-etching solution of a crystalline-silicon solar cell. A liquid conveying pipeline (1) is connected with a liquid storage box (2); the liquid storage box (2), a pump (5), at least three reaction troughs (8) and the liquid storage box (2) are sequentially connected so as to form a circular loop; the liquid storage box (2) is connected with the reaction troughs (8) sequentially by the pump (5), a manual valve (6), an automatic valve (7) and a flow meter (9); the liquid storage box (2) and the reaction troughs (8) are internally provided with a heating system and a liquid level sensor (10); and the liquid storage box (2) is connected with a solution dosing box (11) by the manual valve (6) and the automatic valve (7). In the invention, all reaction troughs are connected by the liquid storage box to form one reaction trough with large volume, the influence of the reaction consumption and the reaction heat on the concentration and temperature of the solution is reduced, the uniformity of the solution is improved, and the changing rate of the concentration is effectively reduced when complementing the solution.
Owner:鸿舸半导体设备(上海)有限公司
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