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56results about How to "Reduce or avoid harm" patented technology
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Medical guiding wire with insulating coating layer and manufacturing method of medical guiding wire
The invention discloses a medical guiding wire with an insulating coating layer and a manufacturing method of the medical guiding wire. The medical guiding wire comprises a core wire and the surface insulating coating layer which is placed in an elastic body to enable the elastic body to be formed on an elastic body 2. The medical guiding wire with the insulating coating layer is provided with the elastic body, when the medical guiding wire is guided into a human body, good elasticity is achieved, staggering and knotting or breaking cannot happen easily, and damage on the human body during an operation process is lowered. Flexible selecting can be carried out in different operations, and the application range is wide. The insulating coating layer effectively prevents the metal guiding wire from being in direct contact with the human body tissue, and some toxic elements of metal materials are effectively prevented from being deposited in the human body tissue. The manufacturing method of the medical guiding wire with the insulating coating layer has the advantages of being simple in technology, stable in performance, high in yield and low in manufacturing cost, a manufacturing process is easy to grasp and control, energy is saved, and pollution is avoided.
Owner:珠海金导医疗科技有限公司
Cable laying device
InactiveCN102738739AReduce or avoid harmReduce labor intensityApparatus for laying cablesEngineeringIdler-wheel
Owner:杨春
Connecting structure of front longitudinal beam and front floor longitudinal beam of automobile
The invention discloses a connecting structure of a front longitudinal beam and a front floor longitudinal beam of an automobile, which comprises the front longitudinal beam, a connecting plate and the front floor longitudinal beam which are welded in turn; and the front part of a connecting plate reinforcing groove is lapped with the tail of the front longitudinal beam, while the rear part is lapped with a groove-shaped front floor longitudinal beam. The connecting structure is characterized in that: the groove on the lapped part of the front longitudinal beam and the connecting plate is welded with a root reinforced piece; groove-shaped floor beam reinforcing pieces are overlapped on the rear part of the groove back of the connecting plate reinforcing groove; the rear parts of the groove-shaped floor beam reinforcing pieces are overlapped and lapped with the groove back of the front floor longitudinal beam; and the lateral surface of the tail of the front longitudinal beam is welded with strip shield-shaped floor beam front end reinforcing pieces of which the rear parts are welded with the connecting plate reinforcing groove and the outer side wall of the front floor longitudinal beam groove. The connecting structure can make the front longitudinal beam and the front floor longitudinal beam of the automobile connected firmly; and the capacity of the connecting structure of bearing impact load is improved, and the connecting part cannot be broken and scattered even if the connecting structure bears large impact load.
Owner:力帆科技(集团)股份有限公司
Method for regulating valence state of metal in carbonized metal-organic framework material through alkaline N
ActiveCN107876093AEfficient CatalysisIncrease reaction rateOrganic-compounds/hydrides/coordination-complexes catalystsCatalyst activation/preparationCavitationHigh energy
The invention discloses a method for regulating the valence state of metal in a carbonized metal-organic framework material through alkaline N. Firstly, 5wt.%-10wt.% of an alkaline N source are addedto a copper acetate solution, an N group and Cu in the solution are coordinated by use of ultrasonic field radiation at the frequency of 500-1,000 W, a trimesic acid solution is dropwise added to thesolution, the reaction is sustained for 1-3 h, and an N-modified N-MOF precursor material is obtained; the N-MOF precursor material is put in a high-temperature tube furnace, heated to 600-800 DEG C in the N atmosphere and kept for 4-6 h, and a CN-MOF catalyst with Cu / CuOx / C(x<1) is obtained. The alkalinity coefficient (pKb) of the alkaline N source is in the range of 3-9, alkaline N and copper elements are bonded under the high-energy cavitation action produced by ultrasonic, so that the valence state of metal in a metal oxide produced after carbonization is regulated, and finally, the activity of the obtained catalyst is improved and the service life of the catalyst is prolonged.
Owner:GUANGXI UNIV
Touch module and operating method thereof
InactiveCN103793105AReduce intensityReduce or avoid harmInput/output processes for data processingInfraredComputer module
The invention provides a touch module and an operating method thereof. The operating method includes the steps of detecting a touch point and judging whether the touch point is under normal touch or not according to results of detecting the touch point; if not, decreasing the intensity of infrared laser of the touch module; if yes, judging the position of the touch point. Therefore, damage caused by the infrared laser to human vulnerable parts during abnormal touch can be decreased or avoided.
Owner:CORETRONIC
Spinning forming method of non-dyed flame-retardant viscose colored filament
InactiveCN104831386AWith flame retardant curing effectAcid bath coagulation effect is goodFlame-proof filament manufacturePigment addition to spinning solutionDyeing wastewaterSodium sulfate
The invention relates to a spinning forming method of non-dyed flame-retardant viscose colored filaments. The spinning forming method comprises the following steps: providing spinning mixed liquid prepared by mixing a silicon-nitrogen flame retardant, color paste and alpha cellulose glue; providing a spinning acid bath prepared by mixing sulfuric acid, zinc sulfate and sodium sulfate; deforming and filtering the spinning mixed liquid, feeding the spinning mixed liquid into the spinning acid bath by virtue of a metering pump and a spinning nozzle, and carrying out solidification forming and spinning drafting so as to obtain colored continuous filaments; providing a curing treatment liquid containing positive ions Ti<4+> and Ca<2+>; curing the colored continuous filaments; and respectively carrying out water washing, drying and packaging on the cured filaments, so as to obtain the finished colored filaments. According to the spinning forming method, a downstream dyeing procedure is omitted, so that the environmental pollution caused by spinning printing and dyeing wastewater as well as the injury caused by dyed products to human bodies are maximally reduced or avoided.
Owner:SOL FLAME RETARDANT FIBER
Disposal method and system for electromagnetic field test
InactiveCN108120881AReduce or avoid harmReduce or avoid long waitsElectromagentic field characteristicsHuman bodyTester device
The invention discloses a disposal method and system for an electromagnetic field test. The method comprises the following steps: after measuring the electromagnetic field intensity through an electromagnetic field tester in multiple positions, sending the measured electromagnetic field intensity and the corresponding positions to a mobile terminal to be stored; then dividing the electromagnetic field regions through test application and analysis disposal and displaying the plurality of electromagnetic field regions with different colors and corresponding influence degrees to human body to a display screen of the mobile terminal; and finally, receiving a user command by the display screen of the mobile terminal and displaying detailed description of the electromagnetic fields in corresponding regions on influence of human body. According to the invention, the user only needs to connect the mobile terminal to the electromagnetic tester and provide a power supply for the electromagneticfield tester, and measurement can be finished by holding the electromagnetic field tester in several positions. Then the electromagnetic fields which are clearly partitioned are examined through the display screen of the mobile terminal to understand that the people can't stay at some positions for a long time and are not affected at the other positions, so that long stay possibility of the electromagnetic fields which are relatively great in harm to a human body is reduced or avoided.
Owner:SHENZHEN GOOD START TECH
Multifunctional groove box cutting machine and using method thereof
PendingCN107877713AGood orientationReduce or avoid harmWorking accessoriesStone-like material working toolsEngineeringMechanical engineering
The invention relates to the field of cutting machine equipment, in particular to a multifunctional groove box cutting machine and a using method thereof. The cutting machine comprises a machine body;a motor is arranged in the machine body, is connected with a cutting saw blade through a transmission mechanism and drives the cutting saw blade to rotate to work through the transmission mechanism;and a protective cover used for wrapping the cutting saw blade is arranged on the machine body and is provided with a guide assembly used for feeding and guiding the cutting machine. According to thecutting machine and the using method thereof, the guide assembly is arranged so that the feeding smoothness of the cutting machine can be guaranteed to a certain degree, meanwhile, the guide assemblyhas a good guiding function so that the grooving efficiency can be improved to a certain degree, by means of the guiding function of a guide mechanism, the grooving straightness can be ensured, and the grooving quality can be improved.
Owner:胡才春
Drill bit with string-shaped water pores
ActiveCN104612594ASimple structureImprove the flow fieldDrill bitsConstructionsSection planeWell drilling
The invention discloses a drill bit with string-shaped water pores and relates to the drill bit with a novel hydraulic structure. The drill bit comprises a drill bit body and cutting structures arranged on the drill bit body, cutting teeth are arranged on the cutting structures, chip grooves and flow paths are arranged among the cutting structures, the water pores are arranged in the flow paths, at least one of the water pores is the string-shaped water pore, the outlet of the string-shaped water pore is formed by at least two circles or ellipses in communication, and the longitudinal section shape of each string-shaped water pores in the lengthwise direction is fan-shaped or nearly fan-shaped in a manner of being larger in the opening and smaller at the bottom. By the arrangement, problems that drilling performance of the drill bit is lowered and service life of the drill bit is shortened due to unreasonable hydraulic structure of the drill bit in rapid drilling and high-temperature drilling are solved.
Owner:SOUTHWEST PETROLEUM UNIV +1
Production process for intensified nutritional coffee beer
The invention discloses a production process for intensified nutritional coffee beer. The production process comprises the steps of: adding caffeine into an original beer solution; uniformly mixing the mixture, homogenizing the mixture under a pressure of between 10 and 500 kg / cm2; filling and completely sealing the homogenate; and irradiating the homogenate under 500,000 curiages (Co60 is a radioactive source) for 3-15 minutes to obtain the intensified nutritional type coffee beer. In the invention, 21 microelements or theophylline can be added according to the different requirements of people. The intensified nutritional coffee beer of the invention not only reduces or avoids dangers caused by drunkenness, but also increases microelements needed by a human body and tea fragrance of beer.
Owner:庄朝阳
Display panel and display device
Owner:BOE TECH GRP CO LTD
Building outer wall monitoring module and building
ActiveCN113624370AReduce or avoid harmWallsForce measurement by measuring optical property variationArchitectural engineeringStructural engineering
The invention provides a building outer wall monitoring module and a building. The building outer wall monitoring module comprises a composite photoelectric film used for being attached to the surface of a building outer wall and an electric signal detection unit electrically connected with the composite photoelectric film. The composite photoelectric film comprises a piezoelectric film layer made of a piezoelectric polymer material, an electrode leading-out wire is formed on the piezoelectric film layer, and the piezoelectric film layer outputs a changing electric signal through the electrode leading-out wire when the surface of the building outer wall generates stress change; and the electric signal detection unit is electrically connected with the electrode leading-out wire and is used for detecting an electric signal on the electrode leading-out wire. According to the method, the safety risk of the state of the building outer wall can be effectively identified and controlled, early warning is carried out on the abnormal operation state of the building outer wall such as falling off, and precautionary measures are taken, so that potential hazards are reduced or avoided.
Owner:DONGGUAN VANKE BUILDING TECHN RES
Explosion-proof computer chair with umbrella-shaped pallet
An explosion-proof computer chair with umbrella-shaped pallet is provided in the invention and aims to solve problems of reducing or avoiding damage on a human body due to explosion of a gas rod. The explosion-proof computer chair includes a chair back, a chair holder, a chair cushion, a pallet, a gas rod and a pedestal. An explosion-proof iron block is arranged exactly above the gas rod and is fixed on the pallet. An umbrella-shaped protective shield is arranged exactly above the gas rod and is fixed on a lower part of the pallet. The explosion-proof iron block is in a shape of cuboid with side lengths being 2-10 cm and thicknesses being 2-5 mm. The iron block and the umbrella-shaped protective shield can effectively block an upwardly gas flow and foreign materials therewith when the gas rod explodes, thereby protecting safety of the human body.
Owner:罗扬
A spinning forming method of non-dyed flame-retardant viscose colored filament
InactiveCN104831386BEnvironmentally friendlyComply with energy saving and environmental protection policyFlame-proof filament manufacturePigment addition to spinning solutionPolymer scienceDyeing wastewater
Owner:SOL FLAME RETARDANT FIBER
Rear center air bag restraint system and control method thereof
ActiveCN109334605AReduce or avoid harmGuaranteed stabilityPedestrian/occupant safety arrangementEngineeringAirbag
The invention discloses a rear center air bag restraint system and a control method thereof. The rear center air bag restraint system is composed of two airbag units which are symmetrically arranged,wherein the two airbag units are installed at the middle position of a rear seat; the two airbag units comprise two air chambers, and inflation is carried out when a side collision occurs to a vehicle; inflation is carried out by an air inlet of the first air chamber; the air flow is arranged in a second air chamber along one-way valves in airbag covers in a filling mode; and after the airbag covers are completely unfolded, the unfolding direction of the airbag covers and the heading direction of the vehicle form an included angle of 0-15 degrees, and the two airbag units can be mutually squeezed and supported. The bottom end of the second air chamber is positioned above a cup holder of the rear seat after unfolding. In the collision process, a pressure sensor in the second air chamber detects the air pressure condition in air bags, and when the air pressure condition exceeds a threshold value, the air is released through the side one-way valves of the air bag restraint system units toplay a buffering role and protect passengers.
Owner:JIANGSU UNIV
Drill with open water hole
The invention discloses a drill with an open water hole and belongs to the technical field of drilling. The drill comprises a drill body, cutting structures, cutting teeth, chip grooves, an inner flow passage and the water hole, wherein the cutting structures are arranged on the drill body; the cutting teeth are formed in the cutting structures; the inner flow passage is arranged in the drill body; the chip grooves are formed between the cutting structures; the water hole is formed between the inner flow passage and the chip grooves, and the inner flow passage and the chip grooves are communicated via the water hole; only one water hole is provided, and the water hole is big in opening and small in bottom on the whole; the opening in the bottom of the water hole is directly communicated with the opening in the top of the inner flow passage; the area of the opening in the bottom of the water hole is consistent with or substantially equal to the opening in the top of the inner flow passage. In order to solve the problems that a conventional drill is shortened in service life and decreased in drilling performance due to unreasonable structure of a drill hydraulic structure in the rapid drilling and high-temperature drilling processes, the invention particularly provides the drill with the open water hole.
Owner:成都海纳能源科技有限公司
Safety belt shaking warning device
ActiveCN109649326AReduce or avoid harmImprove securityBelt retractorsEngineeringMechanical engineering
The invention provides a safety belt shaking warning device, which comprises a clamping mechanism, a clamping driving mechanism and a shaking driving mechanism. The clamping driving mechanism is arranged on the clamping mechanism and used for driving the clamping mechanism to clamp a safety belt. The shaking driving mechanism is connected with the clamping mechanism and used for driving the clamping mechanism to reciprocate, and thus, the safety belt clamped by the clamping mechanism is alternately tightened and loosened. The clamping driving mechanism drives the clamping mechanism to clamp the safety belt, and the shaking driving mechanism drives the clamping mechanism to reciprocate to further drive the safety belt clamped by the clamping mechanism to be alternately tightened and loosened, so that the safety belt shakes to tactually and directly remind a driver and / or passengers of an emergency state, then the driver and / or the passengers can timely react to correct operations, and time difference of early warning signals reaching operation reaction chains of the driver and / or the passengers is sharply reduced.
Owner:CH AUTO TECH CORP CO LTD
A kind of melamine silkworm excrement composite carbon material and its preparation method and application
ActiveCN106423070BEfficient modificationModified environmental protectionBiocideOther chemical processesFreeze-dryingCarbonization
The invention discloses a melamine silkworm excrement composite carbon material, a preparation method and an application thereof. The method comprises the following steps: mixing and swelling silkworm excrement and water, then freeze-drying the mixture and then preparing the freeze-dried silkworm excrement into carbonized silkworm excrement under protective gas; adding water into melamine powder and the carbonized silkworm excrement, allowing the mixture to stand and then drying the mixture, introducing N2 to prepare a plasma modified melamine silkworm excrement composite carbon material; mixing the composite material crude product with ZnCl2, performing an activating and expanding reaction under protective gas, then cleaning, centrifuging and drying the reaction product to obtain the melamine silkworm excrement composite carbon material. The material can be applied to the field of sustained and controlled release of pesticides. The graft compounding is performed on the melamine and the silkworm excrement by utilizing plasma modification, the grafting composite reaction speed of the two materials is greatly improved, the obtained composite carbon material has a relatively high specific surface area and N-containing polar group, and the melamine silkworm excrement composite carbon material has relatively high adsorption capacity and good sustained and controlled release effects on the pesticide.
Owner:GUANGXI UNIV
High sensitivity escalator handrail with entrance safety protection device
Owner:CHONGQING MACRO ELEVATOR
Smoke processing unit for intelligent mainboard welding
InactiveCN108994415ASufficiently sucked away in timeFully processedSoldering auxillary devicesActivated carbonBall bearing
The invention relates to the technical field of intelligent mainboard machining auxiliary devices, in particular to a smoke processing unit for intelligent mainboard welding. The smoke processing unitcan timely and sufficiently suck away smoke generated in the welding process, and injurious ingredients in the smoke can be processed more sufficiently; and meanwhile, noise generated in the runningprocess of an axial flow fan can be effectively reduced; the smoke processing unit comprises the axial flow fan, a box, an activated carbon filtering net, a high altitude exhaust pipe, a rectangular tube, an operation table, a left support plate, a right support plate and a plurality of sets of smoke sucking cover devices; and each smoke sucking cover device comprises a transverse sliding plate, acover body, a lifting plate, two sets of threaded pipes, two sets of threaded rods, a communication air pipe and an upper ball bearing, and further comprises a circulating box, a spraying pump, a gear motor, an upper spraying pipe, a lower spraying pipe, a backflow pipe, a left ball bearing, a right ball bearing, an upper spraying branched pipe, a lower spraying branched pipe, a driven gear, a rotating shaft, a semi-gear, a front noise reduction clamping plate, a back noise reduction clamping plate, a front fixing plate, a back fixing plate, a front clamping spring and a back clamping spring.
Owner:江苏宝创科技有限公司
Safety thermal insulation single-hole wash basin tap
InactiveCN107477233AThe overall structure is simpleImprove safety performanceOperating means/releasing devices for valvesThermal insulationThermal insulationSingle hole
Owner:谭朝烈
Intelligent spectacle screen
InactiveCN105334638AAvoid scratchingPracticalOptical partsOptical elementsElectrically conductiveEngineering
The invention relates to the field of spectacles, in particular to an intelligent spectacle screen. The intelligent spectacle screen comprises a spectacle lens, the spectacle lens is provided with an anti-abrasion area and an anti-radiation area, the anti-abrasion area is located at the side edge of the spectacle lens, the anti-radiation area is located within the range surrounded by the side edge of the spectacle lens, a protective film is plated to the anti-abrasion area, and a transparent conducting film is plated to the anti-radiation area. According to the intelligent spectacle screen, the protective film is plated to the anti-abrasion area of the spectacle lens and used for preventing lapped corners of the spectacle lens from being abrased and scratched, the effect of protecting the spectacle lens is achieved, the transparent conducting film is plated to the anti-radiation area of the spectacle lens and used for achieving the anti-radiation effect, harm of electromagnetic radiation can be lowered or avoided, in addition, due to the protection of the anti-abrasion area located at the periphery of the anti-radiation area, the transparent conducting film can be not prone to abrasion or damage, and the intelligent spectacle screen is great in practicability, capable of resisting to radiation and not prone to abrasion.
Owner:LONGCHUAN YAOYU TECH
Multi-sulfo surfactant as well as preparation method and application thereof
ActiveCN111533671AReduce or avoid harmSupplementing the problem of insufficient surface activityPreparation from carboxylic acid halidesSulfonic acids salts preparationSolventActive agent
The invention discloses a multi-sulfo surfactant as well as a preparation method and application thereof. The method comprises the following steps: 1) dissolving dipentaerythritol in a first solvent,adding triethylamine, stirring and heating to 50-60 DEG C, dropwise adding perfluorovaleryl fluoride while stirring, continuously heating to 75-85 DEG C, stirring and reacting for 4-6 hours, washing the product, and performing extraction to obtain a faint yellow solid; 2) dissolving the faint yellow solid in a second solvent, adding sodium hydroxide after the faint yellow solid is completely dissolved, stirring and reacting at 25-35 DEG C for 0.5-1 hour, adding a sulfonate solution, heating to 75-85 DEG C, carrying out heat preservation for a period of time, and carrying out suction filtrationon a reaction product to obtain a solid, namely a product; and 3) adding a catalyst and a third solvent into the obtained solid product, dropwise adding diisocyanate, reacting for 3-5 hours at the reaction temperature of 40-60 DEG C, and drying in vacuum to obtain the multi-sulfo surfactant. The surfactant solves the problem that the surface activity is not high enough due to short fluorocarbon fragments, and the surfactant is used as a chemical oil displacement agent to improve the recovery ratio of crude oil in tertiary oil recovery.
Owner:陕西氢晨新材科技有限公司
Method of managing and monitoring labor protection information
The present invention relates to a method of managing and monitoring the labor protection information, mainly for solving the problems in the prior art that the labor protection and management are not united, are lower in efficiency, and are not standard. By the method of managing and monitoring the labor protection information of the present invention, users log in a labor protection information management and monitoring platform via a piece of labor protection information management and monitoring software for the labor protection information management and monitoring. The labor protection information management and monitoring platform comprises a database management system and a labor protection information management system, and the database management system comprises a basic information database and a labor protection information management business model base. The labor protection information management system can realize the functions of the dynamic management of the labor protection information of the staff, the effective control and management of the labor protection cost, the intelligent management of the procurement and distribution of the labor protection articles, the dynamic early warning monitoring, the statistic analysis and the data mining of the labor protection information, and the system management. By the technical scheme, the above problems are solved better, and the method of managing and monitoring the labor protection information can be used for the labor protection information management and monitoring.
Owner:CHINA PETROLEUM & CHEM CORP +1
A kind of polysulfonic acid-based surfactant and its preparation method and application
ActiveCN111533671BReduce or avoid harmSupplementing the problem of insufficient surface activityPreparation from carboxylic acid halidesSulfonic acids salts preparationPtru catalystReaction temperature
The invention discloses a polysulfonic acid-based surfactant and its preparation method and application. The method comprises: 1) dissolving dipentaerythritol in a first solvent, adding triethylamine, stirring and heating to 50-60°C, and dripping while stirring; Add perfluorovaleryl fluoride, then continue to heat up to 75-85°C, stir and react for 4-6 hours, wash and extract the product to obtain a light yellow solid; 2) Dissolve the light yellow solid in the second solvent, and add hydrogen after it is completely dissolved Sodium oxide was stirred and reacted at 25-35°C for 0.5-1h, then added sulfonate solution and heated to 75-85°C, and after a period of heat preservation, the reaction product was suction-filtered to obtain a solid as the product; 3) the obtained solid The product is added with a catalyst and a third solvent, and diisocyanate is added dropwise, the reaction temperature is 40-60° C., the reaction is 3-5 hours, and vacuum drying is performed to obtain a polysulfonic acid-based surfactant. The surfactant solves the problem of insufficient surface activity due to short fluorocarbon segments, and the surfactant is used as a chemical oil displacement agent to improve the recovery rate of crude oil in tertiary oil recovery.
Owner:陕西氢晨新材科技有限公司
Safe single-hole wash basin faucet having filtering function
InactiveCN107477244AEffective filtration and purificationEasy to replaceOperating means/releasing devices for valvesFiltration separationWater qualityWater flow
The invention provides a safe single-hole wash basin faucet having the filtering function. The safe single-hole wash basin faucet having the filtering function comprises a faucet shell and an uplifting type handle switch. A water outlet pipe with a downward water outlet is arranged on one side of the faucet shell. The lower end of the faucet shell is provided with a water inlet. The water outlet end of the water outlet pipe is detachably provided with a protective sleeve. The protective sleeve comprises a rubber cup and a cylindrical component connected with the water outlet pipe. The rubber cup is fixedly connected with the cylindrical component. The cylindrical component is made of transparent materials. A filtering device is arranged in the cylindrical component. The cylindrical component is connected with the water outlet pipe in a threaded manner. The safe single-hole wash basin faucet having the filtering function can effectively filter and purify water flow, and the filtering device is convenient to replace; meanwhile, the cylindrical component is made of the transparent material, so that the filtering process is transparent and visible, and a user can conveniently observe the water quality and observe whether the filtering device normally operates or not; besides, the rubber cup can achieve the buffering function and reduces or avoids the harm of the faucet to human bodies, the rubber cup is in a bowl shape, and water splashing can be prevented to a certain extent.
Owner:谭朝烈
Safe shower faucet
The invention provides a safe shower faucet which comprises a faucet shell, a handheld shower head and a hose. A water inlet is formed in the back wall of the faucet shell, a water outlet is formed inthe lower wall of the faucet shell, an electromagnetic water valve and a control chip are arranged in the faucet shell, a control switch is arranged on the front wall of the faucet shell, the electromagnetic water valve and the control chip are electrically connected to the control chip separately, a plurality of water outlet holes are formed in the front surface of the handheld shower head, thelower end of the handheld shower head is connected to the water outlet of the faucet shell, a flexible layer coats the surface of the handheld shower head, and a wavy air bag is arranged on the periphery of the flexible layer. According to the safe shower faucet provided by the invention, the flexible layer and the wavy air bag coat the surface of the handheld shower head to play a better buffering role, so that damage to a user by handholding the shower head is reduced or avoided.
Owner:谭朝烈
A method for basic n regulation of metal valence in carbide metal organic frameworks
ActiveCN107876093BEfficient CatalysisIncrease reaction rateOrganic-compounds/hydrides/coordination-complexes catalystsCatalyst activation/preparationPtru catalystMetal-organic framework
The invention discloses a method for regulating the valence state of metals in carbonized metal-organic framework materials with basic N. First add 5~10wt.% alkaline nitrogen source into the copper acetate solution, use 500~1000W frequency ultrasonic field radiation to coordinate the N group with Cu in the solution, and then add the trimesic acid solution dropwise to continue the reaction. 1 to 3 hours to obtain the nitrogen-modified N‑MOF precursor material; then place the N‑MOF in a high-temperature tube furnace, heat it to 600 to 800°C in a nitrogen atmosphere and keep it for 4 to 6 hours to obtain Cu / CuO x / C(x<1) component is the main CN‑MOF catalyst. The basic nitrogen source used in the present invention has a basicity coefficient (pKb) in the range of 3 to 9. The high-energy cavitation generated by ultrasound is used to bond the basic nitrogen and copper elements, thereby regulating the metal in the metal oxide generated after carbonization. valence state, ultimately improving the activity and service life of the resulting catalyst.
Owner:GUANGXI UNIV
vehicle crew compartment
ActiveCN109484262BStrong support protectionReduce or avoid harmVehicle seatsControl theoryMechanical engineering
Owner:ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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