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49results about How to "Effective control of concentration" patented technology
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Method for preparing epoxypropane by catalyzing propylene epoxidation with phase-transfer catalyst under reaction control
A process for preparing epoxypropane by catalyzing propylene epoxidation with a phase-transfer catalyst under reaction control comprises a hydrogen peroxide dehydration part, a reaction part, a separation part, and a tail gas treatment part. Phosphotungstic heteropoly acid quaternary ammonium salt is used as a catalyst; an anhydrous H2O2 organic solvent produced by azeotropic dehydration of hydrogen peroxide and an organic solvent is used as an oxidizing agent; and propylene epoxidation is carried out at 40-160 DEG C and 0.25-10.0 MPa in the presence of inert gas to prepare epoxypropane. The process provided in the invention realizes continuous production of epoxypropane by catalyzing propylene epoxidation with a phase-transfer catalyst, is simple and easy to operate, and is mild in reaction conditions.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Injectable implant and preparation method thereof
ActiveCN104055795AKeep buildSuppress generationSenses disorderPeptide/protein ingredientsPhosphateActive component
The invention relates to an injectable implant and a preparation method thereof. The implant is amnion microparticles mixed in a sodium chloride phosphate physiological solution with a pH of 7.0-7.5. The preparation method comprises the following steps of disinfection processing, decellularization processing, modification processing, and amnion microparticle preparation, and in particular, comprises: taking amnion microparticles as a component A and a sodium chloride phosphate physiological solution as a component B, performing vibration and well mixing according to a mass volume ratio of 20:1-100:1 to prepare an amnion microparticle suspension with a concentration of 20-100 mg / mL by high-speed microjet equipment, wherein the particle size of the amnion microparticles is 50-200 microns. The injectable implant of the invention maintains the natural three dimensional stereo structure and a lot of natural active components of human amnion, reduces immunological rejection reaction caused by raw material source after clinical application of cosmetic injection products, is suitable for injection into deep subcutaneous dermal layer to subcutaneous superficial layer to repair moderate to severe wrinkles or folds, and has good cosmetic repair effect.
Owner:SHAANXI RUISHENG BIOTECH
Waste gas treatment equipment, waste gas treatment method and drying system
ActiveCN106808796AReduce lossesWill not polluteDrying gas arrangementsDrying solid materialsProcess engineeringEngineering
The invention discloses waste gas treatment equipment, a waste gas treatment method and a drying system. The waste gas treatment equipment comprises a waste gas recovery treatment unit and a fresh air heating unit. The waste gas recovery treatment unit comprises a first heat exchanger and a catalytic reactor. The first heat exchanger is provided with a first heat exchange side and a second heat exchange side which exchange heat mutually. The fresh air heating unit comprises a fresh air entering channel and a second heat exchanger. The second heat exchanger is provided with a third heat exchange side and a fourth heat exchange side which exchange heat mutually. An air inlet of the first heat exchange side is used for communicating with an air outlet of a drying oven, an air outlet of the first heat exchange side communicates with an air inlet of the catalytic reactor, an air outlet of the catalytic reactor communicates with an air inlet of the second heat exchange side, an air inlet of the fourth heat exchange side communicates with the fresh air entering channel, and an air outlet of the fourth heat exchange side is used for communicating with an air inlet of the drying oven. Waste gas heat exhausted by the drying oven can be sufficiently recycled, it is ensured that organic pollutant in waste gas is effectively treated, and fresh air can also be heated.
Owner:GUANGZHOU PHNIX AIR CONDITIONER
Doping method and doping device of pulling reincorporation antimony crystals
ActiveCN101717993AReduce the effects of evaporationEffective control of concentrationBy pulling from meltDopantEvaporation
The invention relates to a doping method and a doping device of pulling reincorporation antimony crystals. The doping device comprises a quartz cover and a small quartz crucible, the small quartz crucible containing dopant antimony is hung in the quartz cover, and the bottom of the small quartz crucible is provided with a small hole. By adopting the doping device, the dopant antimony is effectively doped to a silicon melt when silicon materials are melted, the splash of dopant antimony is effectively controlled in the quartz cover at the moment of flowing into melting silicon in the doping process, the damage to hearth atmosphere is avoided, and the problem that the dopant antimony is difficult to be doped into the silicon materials because of the splash caused by violent reaction is effectively solved. Because the doping time is short, the influence of evaporation of dopant is reduced. The reaction of the doping process is stable and controllable, the weight of the dopant can be accurately set, and the consistence of the dopant can be effectively controlled. The efficiency for doping the antimony is enhanced, the cost of the dopant is saved, and the crystallization rate of the reincorporation antimony crystals is enhanced at the same time, thereby meeting the needs of domestic and international markets for the reincorporation antimony crystals.
Owner:内蒙古中环领先半导体材料有限公司 +1
Antibiotic wastewater degradation process
InactiveCN105502775AEffective control of concentrationLow costWater treatment parameter controlWater/sewage treatment by irradiationPersulfateUltraviolet lights
The invention relates to an antibiotic wastewater degradation process. The antibiotic wastewater degradation process comprises the steps of firstly adding persulfate into pretreatment wastewater so as to obtain a mixed solution, regulating pH of the mixed solution with an acid liquid or an alkali liquid, carrying out first illumination on the mixed solution by virtue of 200nm-300nm ultraviolet light after the pH regulation, adding a thiosulfate solution into the mixed solution, and carrying out secondary illumination by virtue of 300nm-400nm ultraviolet light, so as to obtain water in which antibiotics are removed. According to the antibiotic wastewater degradation process, the antibiotics in the wastewater are degraded, the degradation speed is high, the degradation efficiency is high, the degradation effect is good, furthermore, the raw material cost is low, by-products are toxic-free, and the concentration of the antibiotics in water can be effectively controlled. Data show that the degradation rate of the degradation process to the antibiotics in the wastewater reaches up to 91%-96%.
Owner:中华人民共和国济南出入境检验检疫局
Tower-type self-circulation aerobic degradation reactor and aerobic degradation method using same
InactiveCN104016479APromote degradationHigh oxygen utilizationTreatment using aerobic processesWater contaminantsHigh concentrationReflux
The invention discloses a tower-type self-circulation aerobic degradation reactor. Waste water is uniformly introduced into an anoxic reaction zone at the bottom of the reactor by virtue of a water inlet pipe and a water distribution system which are arranged at the bottom of the reactor, the waste water is jointly mixed and reacts with high-concentration sludge and digestive fluid which are arranged at the bottom of the reactor and mixed liquor refluxed through a central reflux pipe, the mixture rises for forming a vertically rising type flow state upward movement, and a water inlet pump and an aeration fan are used for providing power, so that no sludge, digestive fluid reflux pump and the like is needed; meanwhile, the aeration fan has low power requirement, a conventional air blower is needed only, and operating cost and management difficulty are greatly reduced.
Owner:HENAN TIANGUAN GRP
Formation method of transistor
ActiveCN104103502AHigh dielectric constantPrevent proliferationSemiconductor devicesGate dielectricImpurity doping
Provided is a formation method of a transistor. The method comprises the steps that a gate dielectric layer is formed on a semiconductor substrate; impurity doping is performed on the gate dielectric layer so that a work function of the transistor is adjusted; and after impurity doping, a gate electrode is formed on the gate dielectric layer. Impurity doping is performed on the gate dielectric layer so that a work function adjusting area can be formed in the gate dielectric layer. Besides, concentration and time of impurity doping in the impurity doping process can be effectively controlled so that uniform doping can be formed and the doped impurities can be prevented from diffusing into the substrate. Furthermore, dielectric constant of the gate dielectric layer can be increased so that thickness of an equivalent oxide layer of the transistor can be reduced. In addition, impurity doping is performed on the gate dielectric layer, and a work function adjusting layer is not formed so that thickness size of the transistor can be correspondingly reduced, development of smaller characteristic size of a semiconductor technology is facilitated, and progress of the semiconductor technology is promoted.
Owner:SEMICON MFG INT (SHANGHAI) CORP
P/N-type laminated resistive random access memory for growing metal nano crystal particles spontaneously
InactiveCN102903847AEffective control of concentrationControl concentrationElectrical apparatusStatic random-access memoryOptoelectronics
The invention discloses a P / N-type laminated resistive random access memory for growing metal nano crystal particles spontaneously. The P / N-type laminated resistive random access memory for growing metal nano crystal particles spontaneously is composed of a lower electrode, an induction layer I, an induction layer II and an upper electrode which are laminated sequentially. The lower electrode is metal which is easy to be oxidized into a metal ion under the forward electric field effect; the induction layer I is an N-type oxide; the induction layer Ii is a P-type oxide; the upper electrode is a metal or electric conducting compound with stable properties under the electric field effect; the lower electrode grows metal nanocrystalline particles spontaneously in the induction layer I under the forward electric field effect, becomes a lower resistor when a reverse bias voltage is added for the lower electrode, thus the operation of data '1' storage is carried out, and becomes a high resistor when a forward or reverse bias voltage is added for the lower electrode, thus the operation of data '0' storage is carried out. The P / N-type laminated resistive random access memory for growing metal nano crystal particles spontaneously provided by the invention has the advantages that the resistive random access memory acts as an induction factor of an electric conducting channel by utilizing metal nanocrystals; and the number of formed nanocrystals is controlled through the induction layer I, so that the vibration of the voltage and current of a device can be controlled effectively and the controllability of the access memory is improved.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY
Ventilating air-conditioning system of large welding workshop
InactiveCN102444953AGuaranteed minimum number of air changesOrderly exclusionLighting and heating apparatusDirt cleaningWorking environmentEngineering
The invention relates to a ventilating air-conditioning system of a large welding workshop, which substantially comprises induced fans blowing in multi-angle mode and disposed in each span of the workshop, roof exhaust fans are correspondingly arranged on a roof, and a large ventilating airflow formed by the induced fans and the roof exhaust fan workshop is an induced type single-way flow. An air-conditioning tail end is installed at each working position and communicated with an air-conditioning machine case through an air supply pipe. A partial air exhaust cover is disposed above a welding frame of the workshop, communicated with a fan box through a pipeline and combined with supplied air at the air-conditioning tail end to form a small airflow In local blow-suck type ventilation mode. The ventilating air-conditioning system of a large welding shop substantially has the advantages of 1 ensuring the minimum number of times of ventilation of the workshop, 2 providing workers with a conformable working environment, 3 not only removing harmful substances but also lowering the temperature in working areas, 4 ensuring safe production, and creating a comfortable thermal environment in the working areas. In addition, the temperature in the working areas is adjustable and controllable, and the system is energy-saving, reliable and low in cost.
Owner:DONGFENG DESIGN INST +1
High-nitrogen-concentration composite microbial fertilizer and preparation method thereof
ActiveCN103193541AEffectively control the hydrolysis rateControl the rate of hydrolysisFertilizer mixturesMonopotassium phosphateFermentation
The invention relates to a high-nitrogen-concentration composite microbial fertilizer and a preparation method thereof, wherein the raw materials of the high-nitrogen-concentration composite microbial fertilizer comprise the following components in percentage by weight (wt%): 10-33% of urea, 5-20% of microbial strain agent, 10-40% of organic materials and 30-70% of water. The preparation method comprises the following steps of: adding the materials to a fermentation container, stirring evenly, fermenting for 15-25 days, adding appropriate monopotassium phosphate when lots of gas gives off and after detecting that the weight percentage concentration of ammonium nitrogen of the materials fermented completely is lower than 2%, thereby obtaining the composite microbial fertilizer in liquid or solid form, and finally, weighing and packaging. According to the invention, active small molecular amide nitrogen is transformed and fixed into slow-release macromolecular organic nitrogen through biochemical reaction of microorganisms; therefore, the content of nitrogen nutrient in the composite microbial fertilizer is improved and the activity and amount of microorganisms also are guaranteed; besides, the utilization rate of urea is improved and pollution on the natural environment caused by easy loss of nitrogen is reduced. As a result, a novel, long-acting, environmentally-friendly composite microbial fertilizer is developed.
Owner:江西良田上品实业有限公司
Method for degrading open-chain hydrochloric ether through tannic-acid-stable-nanoscale-zero-valent-iron-reinforced persulfate
ActiveCN109942071AComplete degradation effectReduce the production of secondary by-productsWater contaminantsWater/sewage treatment by oxidationEnvironmental chemistryEther
The invention provides a method for degrading open-chain hydrochloric ether through tannic-acid-stable-nanoscale-zero-valent-iron-reinforced persulfate. The method includes the following steps that 1)tannic-acid-stable nanoscale zero-valent iron is added into a water solution containing open-chain hydrochloric ether pollution; 2) the persulfate is added into the mixed water solution in the step (1), and the mixture is fully mixed. According to the method, the chloroform degradation efficiency is greatly improved, the cost is reduced, and application prospects are good.
Owner:TIANJIN UNIV +2
Biological salt-removing microbial fertilizer and preparation method thereof
InactiveCN106631333AIncrease dominanceGrowth inhibitionAlkali orthophosphate fertiliserAmmonium orthophosphate fertilisersBiotechnologyAcetic acid
The invention discloses a biological salt-removing microbial fertilizer which comprises the following components in parts by weight: 3-7 parts of gibberellins, 1-2 parts of heteroauxin, 1-3 parts of cytokinin, 50-70 parts of bacillus megatherium, 90-110 parts of salt-removing flora, 20-25 parts of urea, 10-15 parts of potassium phosphate, 40-50 parts of calcium nitrate, 75-100 parts of peat soil, 5-10 parts of columbianetin acetate and 5-7 parts of lignans. The invention further provides a method for preparing the biological salt-removing microbial fertilizer. According to the fertilizer disclosed by the invention, the defects of the prior art can be solved, the balance degree of the biological salt-removing microbial fertilizer on crop supply is improved, and the usage amount of the conventional fertilizer is reduced.
Owner:INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
Strong basic electrolysis water generating device for controlling temperature of electrolyte
InactiveCN107055698AImprove production qualityIncrease production outputWater treatment parameter controlTreatment control/steeringEnvironmental chemistryElectrolysed water
The invention discloses a strong basic electrolysis water generating device for controlling the concentration of electrolyte and belongs to the technical field of electrolysis water production. The strong basic electrolysis water generating device is characterized in that an electrolyte solution concentration real-time replenishing device is arranged on an existing strong basic electrolysis water generating device and comprises a liquid replenishing pipe, a liquid replenishing pump, a liquid preparing tank and a stirrer; the stirrer is arranged in the liquid preparing tank and is used for stirring to enable the concentration of the electrolyte solution to be uniform; the liquid replenishing pump is arranged on the liquid replenishing pipe; the liquid preparing tank is communicated with an electrolyte solution storing tank by the liquid replenishing pipe. The strong basic electrolysis water generating device has the beneficial effects that the concentration of the electrolyte solution in the electrolysis process can be effectively controlled, the concentration of the electrolyte solution is enabled to meet the requirements, and the production quality of electrolysis water is improved; electrolysis equipment is enabled to continuously work, and production output of the electrolysis water is greatly increased; a concentration sensing device can be used for controlling and stabilizing the concentration of electrolyte in real time.
Owner:重庆七口泉生物医药科技有限公司
Method for detecting loss of desulphurized organic components and technology for desulphurizing regenerable flue gas
ActiveCN103235028AQuick analysisEffective control of concentrationGas treatmentSamplingFlue gasStandard solution
The invention provides a method for detecting a loss way and the loss quantity of desulphurized organic components in a flue gas desulphurization system, and a technology for desulphurizing regenerable flue gas by using the method. The method comprises the steps of: respectively adjusting a solution to be tested and a plurality of standard solutions until to strong acidity; respectively heating and oscillating the solution to be tested and the plurality of standard solutions; respectively detecting carbon elements in the plurality of standard solutions, so as to form a linear relation between the concentration of the desulphurized organic components of the standard solutions and detection result data of a carbon element; detecting a carbon element in the solution to be tested; and obtaining the concentration of the desulphurized organic components in the solution to be obtained according to the linear relation. By adopting the method, the loss reason, the loss way and the loss quantity of the effective desulphurized components can be rapidly judged. Thus, a detection technology support and basic test data are provided for adjustment of technologies of recycling of a desulphurized organic amine component, and determining of the opportunity and the quantity of supplying fa resh desulphurized solution to maintain balanced and stable operation of the desulphurization system.
Owner:PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
System and process of triple-effect cross-flow evaporation
ActiveCN102627301AIncrease concentrationEffective control of concentrationAlkali metal sulfites/sulfatesEvaporationEngineering
The invention discloses a system and a process of triple-effect cross-flow evaporation. The system of triple-effect cross-flow evaporation comprises a first effect evaporator, a second effect evaporator, and a third effect evaporator, wherein a steam outlet of the first effect evaporator communicates with a steam inlet of the second effect evaporator, a steam outlet of the second effect evaporator communicates with a steam inlet of the third effect evaporator, a material outlet of the third effect evaporator communicates with a material inlet of the first effect evaporator, and a material outlet of the first effect evaporator communicates with a material inlet of the second effect evaporator. In the process of triple-effect cross-flow evaporation, the steam flows from the first effect evaporator to the second effect evaporator, and further to the third effect evaporator, while the material flows from the third effect evaporator to the first effect evaporator, and further to the secondeffect evaporator. The system and the process of triple-effect cross-flow evaporation provided by the invention can effectively control the material concentration during the evaporation-crystallization process in case the material concentration is too high.
Owner:NINGXIA UNISPLENDOUR TIANHUA METHIONINE CO LTD
Device capable of automatically controlling pulp density
InactiveCN106513156AEffective control of concentrationControl concentrationGrain treatmentsAutomatic controlEngineering
The invention discloses a device capable of automatically controlling the pulp density. The device comprises a box body, a ball cock, a check valve and an overflow pipe. The ball cock is arranged inside the box body, one end of the check valve is made communicated with a pipeline arranged outside the box body, the other end of the check valve is provided with a replenishment water outlet pipe, the replenishment water outlet pipe is connected with a ball mill, the overflow pipe is made communicated with the bottom of the box body, one end of the ball cock is provided with a replenishment water inlet pipe, the replenishment water inlet pipe is connected with one side face of the box body, and the box body is provided with an ore crushing water feeding pipe which is located below the replenishment water inlet pipe. According to the device, the feeding and addition water amount can be effectively controlled, the ground pulp density is further controlled, the structure is simple, the manufacturing cost is low, use is convenient and reliable, the ore grinding effect is well improved, and production efficiency is improved.
Owner:HUBEI DABEIJIANG ENVIRONMENTAL TECH CO LTD
Doping method and doping device of pulling reincorporation antimony crystals
ActiveCN101717993BReduce the effects of evaporationEffective control of concentrationBy pulling from meltDopantEvaporation
The invention relates to a doping method and a doping device of pulling reincorporation antimony crystals. The doping device comprises a quartz cover and a small quartz crucible, the small quartz crucible containing dopant antimony is hung in the quartz cover, and the bottom of the small quartz crucible is provided with a small hole. By adopting the doping device, the dopant antimony is effectively doped to a silicon melt when silicon materials are melted, the splash of dopant antimony is effectively controlled in the quartz cover at the moment of flowing into melting silicon in the doping process, the damage to hearth atmosphere is avoided, and the problem that the dopant antimony is difficult to be doped into the silicon materials because of the splash caused by violent reaction is effectively solved. Because the doping time is short, the influence of evaporation of dopant is reduced. The reaction of the doping process is stable and controllable, the weight of the dopant can be accurately set, and the consistence of the dopant can be effectively controlled. The efficiency for doping the antimony is enhanced, the cost of the dopant is saved, and the crystallization rate of the reincorporation antimony crystals is enhanced at the same time, thereby meeting the needs of domestic and international markets for the reincorporation antimony crystals.
Owner:内蒙古中环领先半导体材料有限公司 +1
A p/n-type stacked resistive memory with spontaneous growth of metal nanocrystal particles
InactiveCN102903847BEffective control of concentrationControl concentrationElectrical apparatusStatic random-access memoryOptoelectronics
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY
Method for removing antibiotics from water by means of UV/TiO2/H2O2
InactiveCN105967410AEffective control of concentrationLow costWater/sewage treatment by irradiationWater treatment compoundsPersulfateSulfate
The present invention relates to a kind of using UV / TiO 2 / H 2 o 2 Combined method of removing antibiotics in water, by first adding persulfate to pretreated wastewater to obtain a mixed solution, then using acid or lye to adjust the pH of the mixed solution, and then using 200nm-300nm ultraviolet light to adjust the pH The mixed solution is irradiated for the first time. After the first ultraviolet light irradiation is completed, nano-titanium dioxide and hydrogen peroxide are added to the mixed solution and the second irradiation is performed with 280-350nm ultraviolet light, thereby utilizing UV / TiO 2 / H 2 o 2 The formed composite synergistic system degrades the antibiotics in the water, and finally obtains the water from which the antibiotics are removed. The process of the present invention degrades the antibiotics in the waste water, which not only has a fast degradation rate, a high degradation efficiency, a good degradation effect, and low raw material cost, The by-products are non-toxic and can effectively control the concentration of antibiotics in water.
Owner:INTEGRATION TECH SERVICE CENT OF ZIBO ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Preparation method of multistage sample injection micro-fluidic chip for synthesizing Ag/Ag2S/CdS heterojunction
The invention discloses a preparation method of a multistage sample injection micro-fluidic chip for synthesizing a Ag / Ag2S / CdS heterojunction. The multistage sample injection micro-fluidic chip for synthesizing the Ag / Ag2S / CdS heterojunction is disclosed to overcome the defects of existing synthesis technologies of a nanomaterial. A CdS micro-droplet forming area, a CdS nano-particle mixing reaction area, a Ag2S / CdS micro-droplet forming area, a Ag2S / CdS heterojunction mixing reaction area and a Ag / Ag2S / CdS forming area are arranged to realize the effective control effect of the micro-fluidicchip on the synthesis of the nanocomposite material. The multistage sample injection micro-fluidic chip designed by the invention has the advantages of optimized structure, convenience in operation,realization of step-by-step sample injection, and realization of synthesis of the nanocomposite material with a good dispersity and a uniform size. In addition, introduction of samples with differentconcentrations and different proportions can be realized by multistage sample injection, so that successful preparation of the nanocomposite material with different sizes and performances can be achieved.
Owner:UNIV OF JINAN
Cremation flue gas purification combustion device
InactiveCN102121702AReduced or reduced productionPassive controlIncinerator apparatusCombustorCombustion chamber
The invention discloses a cremation flue gas purification combustion device, which comprises combustor sliding rails, a combustor, a combustor bracket, a combustor controller and a combustion chamber, wherein the combustion chamber is provided with an opening, a temperature sensor, spoilers, a gas inlet and a gas outlet; the spoilers are arranged in the combustion chamber; the combustor sliding rails are arranged on the upper part of the combustor bracket; and the combustor is arranged on the upper parts of the combustor sliding rails. The cremation flue gas purification combustion device reduces the workload of cremation operators, and can be started to seal incompletely combusted substances in cremation flue gases in the device before the cremation operators starts a combustion program and remove the incompletely combusted substances in advance before the cremation flue gases are emitted out of a chimney.
Owner:民政部一零一研究所
Four-effect cross-flow evaporation system and process
ActiveCN102657947AIncrease concentrationEffective control of concentrationMultiple-effect evaporationEvaporationEngineering
The invention discloses a four-effect cross-flow evaporation system and process. In the four-effect cross-flow evaporation system, a material outlet of a fourth-effect evaporator is respectively communicated with material inlets of a third-effect evaporator and a first-effect evaporator, and material outlets of the third-effect evaporator and the first-effect evaporator are communicated with a material inlet of a second-effect evaporator. In the four-effect cross-flow evaporation process, the flow direction of materials comprises two parts, wherein one part is reverse-flow charging evaporation from the fourth-effect evaporator to the third-effect evaporator and then to the second-effect evaporator; and the other part is cross-flow evaporation containing reverse-flow charging and parallel-flow charging from the fourth-effect evaporator to the first-effect evaporator and then to the second-effect evaporator. According to a cross-flow evaporation method, the evaporation capacity in the evaporation crystallization process can be effectively controlled, the material concentration in the evaporation crystallization process can be effectively controlled, and the too-high material concentration is prevented.
Owner:NINGXIA UNISPLENDOUR TIANHUA METHIONINE CO LTD
Organic electroluminescent device comprising dopant material and plurality of host materials
PendingCN111354853AImprove performanceImproved lifespanIndium organic compoundsSolid-state devicesOrganic electroluminescenceDopant
The invention discloses an organic electroluminescent device comprising a dopant material and a plurality of host materials. A light emitting layer of the device includes two host materials having specific structures and a dopant material. Appropriate energy level matching can be obtained by selecting the combination of the specific main body material and the specific doping agent material, the concentration of carriers in the light-emitting layer is effectively regulated and controlled to reach expected balance. Compared with the prior art, the organic electroluminescent device enables the comprehensive performance of the organic light-emitting device to be obviously improved. A display assembly and a compound formulation are also disclosed.
Owner:BEIJING SUMMER SPROUT TECH CO LTD
Gas-liquid spraying and dust-falling system for fully mechanized mining face
ActiveCN111677545AEffective control of concentrationControl concentrationDust removalFire preventionMining engineeringSpray nozzle
The invention discloses a gas-liquid spraying and dust-falling system for a fully mechanized mining face, which belongs to the field of dust-falling systems. The gas-liquid spraying and dust-falling system for the fully mechanized mining face comprises an atomizing and humidifying sub system, a boundary mist curtain sub system and a dust mist recycling sub system, which are arranged at the outer side of the fully mechanized mining face, wherein the boundary mist curtain sub system comprises a high-pressure knife shaped spray nozzle mounted on a hydraulic bracket; the atomizing and humidifyingsub system comprises a spraying dust faller which is mounted on a rocker arm of a coal mining machine, and sprayed water mists completely cover the high-pressure knife shaped spray nozzle; and the dust mist recycling sub system comprises a wind-water linked dust removal device mounted on a semi-surrounding type supporting base, and is arranged below the spraying dust faller for collecting water mists sprayed by the spraying dust faller. Compared with the prior art, the dust-falling system can improve dust-falling effect, and effectively controls dust concentration of the fully mechanized mining face, even the whole mining area.
Owner:ANHUI UNIV OF SCI & TECH +1
Reaction-controlled phase transfer catalyst catalyzed propylene epoxidation to prepare propylene oxide
A process for preparing epoxypropane by catalyzing propylene epoxidation with a phase-transfer catalyst under reaction control comprises a hydrogen peroxide dehydration part, a reaction part, a separation part, and a tail gas treatment part. Phosphotungstic heteropoly acid quaternary ammonium salt is used as a catalyst; an anhydrous H2O2 organic solvent produced by azeotropic dehydration of hydrogen peroxide and an organic solvent is used as an oxidizing agent; and propylene epoxidation is carried out at 40-160 DEG C and 0.25-10.0 MPa in the presence of inert gas to prepare epoxypropane. The process provided in the invention realizes continuous production of epoxypropane by catalyzing propylene epoxidation with a phase-transfer catalyst, is simple and easy to operate, and is mild in reaction conditions.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Method for preparing high-purity titanium plate for use as target
ActiveCN103215553BFully deformedUniform deformationVacuum evaporation coatingSputtering coatingWork in processTitanium
The invention provides a method for preparing a high-purity titanium plate for use as a target. The method comprises the following steps of: pressing sponge titanium particles into an electrode block and then welding the electrode block into a consumable electrode; 2, performing vacuum arc remelting of the consumable electrode to obtain a cast ingot; 3, performing the primary heating treatment on the cast ingot; 4, performing upset drawing forging on the cast ingot, thereby obtaining a plate blank; 5, performing the secondary heating treatment on the plate blank; 6, rolling the plate blank, thereby obtaining a semi-finished product plate; 7, performing annealing, straightening and surface figuring on the semi-finished product plate, thereby obtaining the high-purity titanium plate for use as the target. The mass purity of the high-purity titanium plate prepared by the method provided by the invention for use as the target is not less than 99.8%, and the average grain size of the plate is less than 100 microns; and the grain sizes are even and uniform, thereby meeting related technical requirements of the sputtering target; and as a result, the high-purity titanium plate can be widely applied to the field of sputtering films of electronic devices, semiconductors, plane display and the like.
Owner:WESTERN TITANIUM TECH
Method for evaluating effects of insecticides in preventing and controlling tomato whiteflies and tomato yellow leaf curl virus (TYLCV) indoors
InactiveCN110999695ATypes of Effective ControlEffective control of concentrationPlant protectionFruit crop cultivationDiseaseTomato yellow leaf curl virus
The invention relates to a method for evaluating effects of insecticides in preventing and controlling tomato whiteflies and a tomato yellow leaf curl virus (TYLCV) indoors. The method comprises the steps that each chemical, each concentration and blank controls of to-be-evaluated insecticides are each set as one treatment, and each treatment has three replicates or more; each replicate takes equivalent tomato seedlings during the true leaf period, each treatment uniformly sprays corresponding equivalent liquid chemicals to the tomato seedlings, and after the liquid chemicals are applied, thetomato seedlings are put in an artificial climate chamber for cultivation, so that the liquid chemicals are fully absorbed; after the liquid chemicals are applied, each replicate is inoculated with equivalent whitefly adults carrying the TYLCV, and the number of survival whitefly adults carrying the TYLCV on the tomato seedlings of each replicate in different time periods after inoculation performed with the adults is observed; and after the replicates are each inoculated with the equivalent whitefly adults carrying the TYLCV for 14 days, TYLCV disease symptoms are surveyed, the TYLCV diseaselevel of each treatment is determined, and disease indexes and the control effect are calculated. Under the constant conditions, the types and the use concentrations of the insecticides capable of effectively controlling the whiteflies and a tomato yellow leaf curl disease spread by the whiteflies are evaluated and screened.
Owner:天津市农业科学院
Processing technology of copper strip for buzzing piece
ActiveCN114231768ARaise the level of structureImprove mechanical propertiesMetallic material coating processesMetal rolling arrangementsSlagContinuous rolling
The processing technology comprises the following steps: S1, preparing a raw material A, a raw material B and a raw material C which are zinc ingots; s2, the raw material A is put into a smelting furnace to be smelted; s3, adding a deslagging agent, and fishing out slag completely; s4, a lubricant is added, and pull casting is conducted; s5, surface milling oxide skin and included slag removal are conducted on the surface of the pull casting product; s6, the ingot blank is annealed in a hot rolling push rod furnace under the condition of 800-900 DEG C; s7, the copper strip with the thickness of 4.2 mm is roughly rolled through two continuous rolling to obtain a copper strip with the thickness of 1.8 mm, and the copper strip is subjected to edge cutting and then rolled; s8, the 1.8 mm copper strip is subjected to heat preservation for 6 h in a push rod furnace at the temperature of 700 DEG C for annealing, and the 1.8 mm copper strip is subjected to acid pickling with dilute sulphuric acid at the speed of 70 m / min; the multi-group mixed raw materials of the preparation raw material A, the preparation raw material B and the raw material C are selected as the preparation raw materials of the copper strip, the structural level of the copper strip can be improved by mixing the various raw materials, the mechanical performance is enhanced, and meanwhile, the strength and the conductivity of the copper strip are improved.
Owner:清远楚江高精铜带有限公司
Acid deposition online monitoring system
ActiveCN102661976AEfficient recyclingGuaranteed amountMaterial analysis by electric/magnetic meansMonitoring systemEngineering
The invention discloses an acid deposition online monitoring system, comprising an automatic sampler, a six-way valve, a separation column, a suppresser, a conductivity detector, a data processor, an elute bottle, a high pressure pump, a water tank and a concentration monitoring meter, wherein the automatic sampler is connected with the six-way valve; the elute bottle is connected with the high pressure pump, the six-way valve, the separation column, the suppresser, the conductivity detector and the data processor in sequence; the water tank is connected with the elute bottle by using a metering pump; the conductivity detector is in bidirectional connection with the suppresser; the concentration monitoring meter is arranged in the elute bottle; and the suppresser is provided with a an elute recovering pipeline communicated with the elute bottle. The acid deposition online monitoring system provided by the invention not only can effectively supply spraying liquid but also can further ensure the concentration of the spraying liquid to be accurately monitored in real time according to the concentration variation of the spraying liquid, so that the frequency of supplying the spraying liquor can be effectively reduced, and the online monitoring precision is improved in real time.
Owner:青岛海颐天仪器有限公司
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