41results about How to "Has an economic advantage" patented technology

The invention relates to an etching composition for a copper-based metal layer and a method for preparing a metal line. The invention discloses an etching agent composition for the copper-based metal layer. The etching agent composition can represent an excellent cone angle profile. Furthermore the invention discloses a method of forming a wiring through the etching agent composition. The etching agent composition for the copper-based metal layer comprises the components of: 0.5-20% by weight of persulfate, 0.1-5% by weight of a triazole compound and the balance of water. Therefore the copper-based metal layer is selectively etched. An excellent straightness of the etched pattern is realized. Furthermore an improved cone angle profile is represented.

The invention relates to a micro-built-in cantilever beam type displacement meter used for a geomechanics model test, and the micro-built-in cantilever beam type displacement meter comprises a spring leaf, a steel wire rope and a strain gauge, etc., the both ends of the steel wire rope are respectively connected with the upper end of the spring leaf and an internal measuring point of a model; and a regulating screw bolt is arranged on the upper end of the spring leaf. The lower end of the spring leaf is fixed on a thick steel bar, the strain gauge is arranged at the root which is near to the lower end of the spring leaf and is connected with a signal receiving and processing device by a signal line. The micro-built-in cantilever beam type displacement meter has the following advantages: (1) Small size and small occupying space. (2) High sensitivity. (3) Simple structure, convenient processing and low cost. (4) Adjustable property. (5) Being embedded in the model possibly. The displacement meter can be embedded in the model, and the measurement is carried out by leading out the signal line.

The present invention relates to a device 1 for attaching a windshield wiper blade 100 to an arm 200, comprising a connector 10 intended to be attached to the blade 100, as well as an adapter 40 intended to be coupled on the one hand to the arm 200 and on the other hand to the connector 10, the adapter 40 in a mobile manner comprising at least one locking element 41, 42 capable of elastically deforming between an active position and a passive position. The invention is remarkable in that the connector 10 comprises means for holding each locking element 41, 42 in active position when the adapter 40 is in an operating position, and in that for each locking element 41, 42, the connector 10 comprises an undercut enabling the elastic deformation of said locking element 41, 42 when the adapter 40 is in an assembly position.

The invention relates to a method for extracting tannin from tara legume in water or ethanol through microwave radiation with a certain strength. The method includes radiating tara bean flour and water or ethanol at solid to liquid ratio of 1:4-10 with a microwave strength of 15-45 W / L for 30-120 min. for extracting at 40-80 DEG C at a stirring rate of 40-80 rpm, centrifugally separating or vacuum filtering, and collecting the filtrate, i.e., tara tannin solution. The tara bean flour is radiated with microwave to allow tannin polar molecule in the tara bean flour to rapidly enter into the leaching solution. The extraction rate of the tara tannin is greater than 70%. Compared with the conventional cooking method, the microwave extraction method of the tara tannin has the advantages of simple process, high extraction efficiency, energy saving effect, advanced process, high efficiency, short period, good economic and operability.

The invention relates to a redundancy optimization method for a current collection system of a large offshore wind plant. The method comprises the steps that (1) according to fan coordinate, submarinecable and electrical equipment data of the offshore wind plant, a redundancy structure of the current collection system of the offshore wind plant is designed; (2) according to a design result of theredundancy structure of the current collection system of the offshore wind plant, redundancy of the current collection system is defined to represent the redundant degree of the redundancy structureof the current collection system, and all cost of the current collection system under different redundancy is calculated; and (3) according to all the cost, full-life-cycle cost of the current collection system of the offshore wind plant under different redundancy is calculated, and minimum full-life-cycle cost is used as optimal design of the redundancy of the current collection system. Comparedwith the prior art, the method has the advantages that reliability is high, economical efficiency is high, and different redundancy is considered.

The invention relates to a cavity forming apparatus for an embedded chamber of underground engineering test model, comprising a middle mandrel and arched block bodies. The matching arched block bodies are arranged outside the middle mandrel through positioners and compose an ellipsoid cavity structure together. When in use, the cavity forming apparatus is firstly fixed on a designed position, and pin rods and a hoop are removed when model materials are filled to a corresponding position of the apparatus layer by layer. When the materials are filled to a cavity opening layer by layer, the middle mandrel is removed, then an arbitrary B type arched block body is removed so the other block bodies all can be removed, and thus the embedded chamber is formed inside the model. The apparatus of the invention solves the technical problem that the embedded chamber cannot be formed through excavation, and is simple in structure, low in cost, easy in assembling, and convenient in dismounting, and can be used repeatedly.

The invention discloses a high-brightness dimmable COB light source. The high-brightness dimmable COB light source comprises a plurality of bonding pads used for reinforcement, a plurality of LED chips with different light colors, a substrate, a retaining wall, a positive electrode and a negative electrode, wherein the retaining wall is fixed on the substrate, and the retaining wall divides the substrate into a plurality of light emitting areas; the LED chip with different light colors are fixed in different light emitting areas respectively; the LED chips located in different light emitting areas are electrically connected with the positive electrode and the negative electrode independently; the retaining wall is a transparent; and the bonding pads are uniformly distributed on the substrate. The high-brightness dimmable COB light source provided by the utility model is provided with a plurality of light emitting areas, two adjacent light emitting areas are isolated by transparent box dam glue, thereby enabling light emitted by each of the light emitting areas to penetrate through the retaining wall and transmit to one or more adjacent light emitting areas. Each of the light emitting areas can adjust current independently, thereby realizing a function of controlling the color temperature and the brightness of each of the light emitting areas independently.

The invention relates to a regeneration method of an inactivated vanadium-phosphorus-oxygen catalyst. The regeneration method comprises the following steps: crushing the inactivated vanadium-phosphorus-oxygen catalyst, and roasting the catalyst at 550-750 DEG C in an air or oxygen atmosphere for 3-10 hours to obtain a roasted product; adding the roasted product into a mixed solvent containing isobutanol and benzyl alcohol, carrying out heating to 110-140 DEG C for refluxing, and keeping heating for 10-16 hours to obtain a reaction solution, wherein water is added into the mixed solvent; and filtering the reaction solution, carrying out washing with alcohol, conducting drying, and activating a product at 400-430 DEG C for 12-36 hours to obtain the regenerated vanadium-phosphorus-oxygen catalyst. According to the method, regeneration of the catalyst is achieved in a crystalline phase adjusting mode, cost is low, effect is good, and important application value is achieved.

The invention relates to a rockfall buffering flexible protection system, which belongs to the technical field of slope protection systems. The falling stone buffering flexible protection system can provide larger displacement freedom degree for falling stone, reduce impact load of the falling stone, control bouncing height of the falling stone and guide motion trails of the falling stone. The function is that the falling rock interception area of the system is used for attenuating the falling rock kinetic energy from the uphill surface, controlling the falling rock motion trail, and guiding the falling rock motion trail into the falling rock buffering channel at the tail section of the system, so that the falling rock is continuously guided downwards under the constraint effect of the falling rock buffering channel until entering the falling rock accumulation area. The protection system guides falling rocks from an upper slope to a slope toe or a downhill section for centralized accumulation and cleaning, or enables the falling rocks to enter a next protection structure with relatively small kinetic energy and bounce height, so that the falling rocks with relatively high kinetic energy can be protected with relatively low protection energy level and system height.

A method for determining the power-frequency design field intensity of a high-voltage crosslinked polyethylene cable comprises the step of manufacturing insulation test blocks of the crosslinked polyethylene cable, the step of manufacturing and preprocessing pin electrodes, the step of manufacturing test specimens for an electrical tree test, the step of conducting an electrical tree initiation test and data processing under a power frequency voltage, the step of conducting an electrical tree initiation test and data processing under the 400 Hz alternating voltage, the step of determining the critical voltage of electrical tree initiation through an impressed voltage and electrical tree initiation time, the step of calculating the critical field intensity of electrical tree initiation according to the size of an electrode system, and the step of determining the power-frequency design field intensity of the crosslinked polyethylene cable through an electric field enhancement coefficient. According to the method, the number of the needed test specimens is small, operation is simple, and control is easy. The determined power-frequency design field intensity can truly and effectively reflect power frequency voltage resistance of the high-voltage crosslinked polyethylene cable with the long service life. The method can be directly used for insulation thickness design of the cable, and guarantees that high-voltage power cables which can meet the technical requirement for long-time and reliable operation and have economic advantages are designed during new product development.

The invention provides a wire clamp device. The wire clamp device comprises a fixing element and locking elements, wherein a plurality of through circular accommodating grooves are formed in the fixing element; a side surface of each accommodating groove is open; a rotating groove is formed in the inner wall of each accommodating groove; the groove width of a clamping position of each rotating groove is smaller than the groove widths of other parts of the rotating groove; each rotating groove communicates with the surface of the fixing element through a guide slot; the locking elements are placed in the accommodating grooves; a plurality of through wire clamping grooves are formed in each locking element; a side surface of each wire clamping groove is open; a locking block is arranged on the outer wall of each locking element and each locking block and the outer wall of the corresponding locking element are integrally formed; and each locking block is matched with the clamping position of the corresponding rotating groove. The invention further provides a wire mounting and taking method of the wire clamp device. The wire clamp device provided by the invention is exquisite in structure and occupies small space, and use space is saved. Moreover, the wire clamp device is relatively simple in design structure and low in economic cost. Compared with the traditional wire clamp, the wire clamp device can fix lots of wires, and has economic advantages. The wire mounting and taking method of the wire clamp device provided by the invention is easy and convenient to operate and convenient to use.

The invention discloses a steviol zirconium catalyst for catalyzing furfural hydrogenation to prepare furfuryl alcohol and a preparation method of the steviol zirconium catalyst, and belongs to the technical field of heterogeneous catalysis. Stevia rebaudiana polyphenol and a zirconium source are mixed according to a specific ratio, and the steviol zirconium catalyst is prepared through a solvothermal method. The steviol zirconium catalyst obtained by the invention can have a good effect of catalyzing furfural hydrogenation with a low dosage under a relatively mild condition, is heterogeneous in a reaction system, is easy to separate and reuse, still maintains excellent catalytic performance after being reused for multiple times, and has a very good application prospect.

The invention relates to a method for producing a plastic frame for a two-wheeled vehicle by means of plastic injection molding, said plastic frame having at least one cavity in the interior, said method comprising a series of steps, wherein, after a preferably thermoplastic plastic melt has been injected into a closed injection-molding tool, a fluid is injected in order to displace the plastic core out of the component cavity.

The invention discloses carbon-containing silicon iron as well as a preparation method and application thereof. The carbon-containing silicon iron is prepared from the following components in percentage by mass: 58%-77% of crystalline silicon cutting slag, 20%-40% of scrap steel, 3%-12% of coke and the balance of auxiliaries, wherein the mass fraction of water in the crystalline silicon cutting slag is less than 3%. Firstly, secondary resources of crystalline silicon cutting slag and scrap steel are recycled, the resource utilization rate is high, the quality and performance of the obtained carbon-containing silicon iron are stable, maximum utilization of the resources is achieved, the environmental load is reduced, and waste is reduced; and the carbon-containing silicon iron is convenient to transport, obvious in heating effect in semisteel steelmaking and low in price, has the advantage of higher cost performance, and has wide popularization and application values.

A method for determining the power-frequency design field intensity of a high-voltage crosslinked polyethylene cable comprises the step of manufacturing insulation test blocks of the crosslinked polyethylene cable, the step of manufacturing and preprocessing pin electrodes, the step of manufacturing test specimens for an electrical tree test, the step of conducting an electrical tree initiation test and data processing under a power frequency voltage, the step of conducting an electrical tree initiation test and data processing under the 400 Hz alternating voltage, the step of determining the critical voltage of electrical tree initiation through an impressed voltage and electrical tree initiation time, the step of calculating the critical field intensity of electrical tree initiation according to the size of an electrode system, and the step of determining the power-frequency design field intensity of the crosslinked polyethylene cable through an electric field enhancement coefficient. According to the method, the number of the needed test specimens is small, operation is simple, and control is easy. The determined power-frequency design field intensity can truly and effectively reflect power frequency voltage resistance of the high-voltage crosslinked polyethylene cable with the long service life. The method can be directly used for insulation thickness design of the cable, and guarantees that high-voltage power cables which can meet the technical requirement for long-time and reliable operation and have economic advantages are designed during new product development.

The invention discloses a flocculation flotation method for comprehensively recovering micro-fine particle molybdenum from iron tailings, and belongs to the field of molybdenum ore beneficiation methods, and the process comprises the steps of thickener sedimentation, primary roughing, tertiary scavenging, secondary flocculation flotation concentration, secondary flocculation flotation concentration, ore grinding of foam products, and fourth concentration to obtain molybdenum concentrate; and performing secondary flocculation scavenging to obtain tailings. According to the beneficiation method, the flotation technological process is optimized, good operability is achieved, the grade of the molybdenum concentrate can be improved, the metal recovery rate of the molybdenum concentrate can be increased, the production and operation benefits of a mine can be increased, reference is provided for development of tailings of the same type, and the beneficiation method is particularly suitable for treating iron tailings containing micro-fine particle molybdenum.

The invention discloses an electro-optical conversion device mounted on a flange surface, which comprises a flange and a flange cover plate, and is characterized in that the flange is connected with an insulating shell through a first connector, a via hole plate and a second connector; a first glue injection hole and a second glue injection hole are formed in the first connecting body; a third glue injection hole is formed in the second connecting body; one end of the insulating shell is a square end part, the other end of the insulating shell is a contracted cylinder, the middle of the insulating shell is cylindrical, a platform is arranged in the insulating shell and is used for fixing the electro-optical conversion plate, and a cable which is arranged on one side of the Dewar tank and is used for transmitting signals passes through a spiral second threading hole of the second connector and a via hole of the via hole plate; a cable on an electro-optical conversion plate in the insulating shell is connected with a cable penetrating through a via hole through a spiral first threading hole in the first connector; and then glue injection sealing is conducted on the first glue injection hole, the second glue injection hole and the third glue injection hole in the second connecting body and the first connecting body respectively.

The invention discloses a preparation method of fructus lycii fruit tea with effects of improving eyesight and calming nerves. The preparation method comprises the following steps when 1000 ml of thefructus lycii fruit tea is prepared: weighing 300 to 500 g of fructus lycii concentrated juice, 10 to 20 g of green tea powder, 7 to 9 g of citric acid, 1 to 3 g of sodium citrate, 0.1 to 0.2 g of stevioside and the balance of fructus lycii bud tea juice; moreover, adding xanthan gum, sophora bean gum and sodium carboxymethyl cellulose in a preparation process and homogenizing. According to the preparation method, a formula is reasonable and the fructus lycii fruit tea is a plant beverage without essence, pigment and preservative; the stevioside is used as a sweetener so that patients with diabetes mellitus also can drink safely and human health is facilitated; folium lycii contains rich betaine, rutin, various amino acids, microelements and the like and has the effects of improving the eyesight and calming the nerves. The fructus lycii contains rich lycium barbarrum polysaccharide and zeaxanthin and has the effects of improving eyesight, removing free radicals, resisting ageing and improving immunity; the fructus lycii fruit tea has natural color and luster, a pleasant aroma and a fresh mouthfeel and is suitable for people of all ages.

The invention discloses a water tank heat storage temperature increasing device. The water tank heat storage temperature increasing device comprises a heat source, a heat storage water tank and a heatuser. The heat source communicate with the heat storage water tank through a heat storage pipeline. The heat source communicates with the heat user through a heat supply pipeline. The heat storage water tank communicates with the heat user through a heat storage heat supply pipeline. The upper end of the heat storage water tank is provided with a connecting pipeline. An open container is arrangedon the connecting pipeline. The open container communicates with the heat storage water tank through the connecting pipeline. The saturated pressure intensity and saturated temperature of water in the heat storage water tank are increased through the open container. According to the water tank heat storage temperature increasing device, the height of the liquid level of the water in the heat storage water tank is increased through the open container and the connecting pipeline, so that the pressure intensity of the water in the heat storage water tank is improved, and then the temperature ofthe water in the heat storage water tank is increased. On the one hand, the heat storage capacity of the heat storage water tank is improved in the heat storage process; and on the other hand, the water yielding temperature of the heat storage water tank can be increased in the heat supply process. Accordingly, the supply water temperature of a whole heating supply system is high.

The invention discloses a porous ceramsite Fenton catalyst and a preparation method thereof, which includes the following steps: (1) In parts by weight, 20-60 parts of municipal sludge, 10-20 parts of clay, 10-20 parts of kaolin, powder 10-20 parts of coal ash, 2-5 parts of silicon source, 2-5 parts of copper-containing compounds, and 2-5 parts of iron-containing compounds are used as raw materials; mix the components in the raw materials, and then squeeze them to obtain ceramsite blanks ; The silicon source is one or more of water glass, fumed silica and silicon powder; (2) The ceramsite blank is dried and then sintered and cooled to obtain a porous ceramsite carrier; the sintering is to convert the dried ceramsite into The granular blank is first heated to 300-600℃ and kept for 10-40min, then heated to 950-1150℃ and kept for 10-40min. The present invention uses sludge to prepare porous ceramsite Fenton catalyst, which has simple raw materials and low price. The sludge is also resourced and has economic advantages. The porous ceramsite Fenton catalyst has a rough surface, a large number of penetrating pores, high particle porosity and high specific surface area; it has stable chemical properties and can be adapted to wastewater treatment in acidic environments.

The invention discloses a steviophenol zirconium catalyst for catalyzing the hydrogenation of furfural to prepare furfuryl alcohol and a preparation method thereof, belonging to the technical field of heterogeneous catalysis. The invention utilizes stevia rebaudiana polyphenols and a zirconium source to prepare a steviol phenol zirconium catalyst through a specific ratio and a solvothermal method. The zirconium steviol phenolate catalyst obtained in the present invention can have a good catalytic effect of furfural hydrogenation under relatively mild conditions and a low dosage. The catalyst is heterogeneous in the reaction system, easy to separate and reuse, and maintains excellent performance after repeated use. Catalytic performance, has very good application prospects.

The invention relates to a mould used for a crack-contained anchored test. The mould comprises a base seat; the base seat is provided with a base plate; side plates, end plates and vertical connecting rods are arranged on the base plate; the two end plates are vertically inserted and connected between the two ends of the two side plates respectively to form a frame body that is provided with an opening at the upper part; the two vertical connecting rods are arranged between the two side plates outside the two ends of the frame body respectively; the two side plates are connected by horizontalconnecting rods that are vertically connected with the vertical connecting rods; the center of the base plate is provided with a crack fixed device; the crack fixed device is provided with plastic thin slices. When in use, after crack and anchor rods are fixed, each screw nut is tightly fastened, semi-solid state rock-like materials or similar materials are casted into the mould of the frame bodyand then fully vibrated. Then after being maintained, the mould is dismounted. When the mould is dismounted, the screw nut A on the side plate is loosened firstly; and the side plates are dismounted;then a device fixing the crack at the bottom is dismounted; finally, the base plate and the end plates are dismounted. The invention has the advantages that the structure is simple, the cost is low, the assembly and dismounting are convenient, the efficiency is high, etc.

The invention relates to a micro-negative pressure external refining method for industrial silicon melts, and belongs to the technical field of pyro-refining purification of silicon melts. A micro-negative pressure device is moved to the position over a ladle opening of an external refining device, a vacuum device of the micro-negative pressure device is started to enable the industrial silicon melts to be subjected to micro-negative pressure external refining, volatile impurities in the industrial silicon melts are removed in the external refining process of the industrial silicon melts, andthe quality of silicon products is improved. According to the invention, a micro-negative pressure environment is created above the silicon melts, so that the escape of flue gas in the external refining process of the silicon melts can be avoided, and the environmental influence is reduced. The method is simple in equipment requirement, easy to operate, environmentally friendly and suitable for large-scale industrial production.

The invention discloses environment-friendly biomass fuel. The environment-friendly biomass fuel is prepared from the following raw materials in parts by weight: 51-65 parts of cotton stalk, 41-48 parts of sugarcane stalk, 10-16 parts of sunflower stalk powder, 10-19 parts of broad bean stalk powder, 8-16 parts of pear branches, 13-20 parts of apple tree sawdust, 3-10 parts of plum sawdust, 17-24parts of rice hull powder, 8-13 parts of pulverized coal, 3-9 parts of plant ash, 2-6 parts of diatomite, 3-6 parts of methyl alcohol, 0.1-0.6 part of calcium peroxide, 0.8-1.3 parts of n-pentane, 0.3-0.8 part of zinc oxide, 0.1-0.5 part of di-tert-utylhydroquinone and 1-5 parts of catalyst. Compared with traditional fuel, the environment-friendly biomass fuel not only has economic benefits, but also has environment-friendly benefits, and the requirements of sustainable development are completely met. Firstly, due to the fact that the environment-friendly biomass fuel is in a particle shape, the volume is compressed, a storage space is saved, and transportation is convenient, so that the transportation cost is reduced; compared with coal, the environment-friendly biomass fuel has the advantages that the volatile matter content is high, and an ignition point is low, so that the environment-friendly biomass fuel is easy to light; the density is improved, the energy density is high, combustion duration time is greatly prolonged, and the environment-friendly biomass fuel can be applied on a coal-fired boiler directly.

The present invention provides a nano particle of a nucleic acid. The nano particle of a nucleic acid is composed of a plurality of single chain nucleic acid units, the single chain nucleic acid units comprising three-head single chain nucleic acid units and optionally also comprising two-head single chain nucleic acid units and one-head single chain nucleic acid units. The nano particle of a nucleic acid has high nucleic acid loading and relatively high stability. In addition, the present invention also provides a process for preparing the nano particles of a nucleic acid and the use thereof in the preparation of small interfering nucleic acid drugs.

The invention relates to a method for optimizing the redundancy of a large-scale offshore wind farm power collection system, comprising the following steps: 1) designing a redundant structure of the offshore wind farm power collection system according to the wind turbine coordinates, submarine cables and electrical equipment data of the offshore wind farm; 2) According to the design results of the redundant structure of the offshore wind farm collector system, define the redundancy degree of the collector system to indicate the redundancy degree of the redundant structure of the collector system, and calculate the various costs of the collector system under different redundancy degrees; 3) According to the various costs, calculate the full life cycle cost of the offshore wind farm power collection system under different redundancies, and the design with the lowest life cycle cost is the optimal design of the power collection system redundancy. Compared with the prior art, the invention has the advantages of high reliability, good economy, consideration of different redundancy and the like.

The present invention relates to a device 1 for attaching a windshield wiper blade 100 to an arm 200, comprising a connector 10 intended to be attached to the blade 100, as well as an adapter 40 intended to be coupled on the one hand to the arm 200 and on the other hand to the connector 10, the adapter 40 in a mobile manner comprising at least one locking element 41, 42 capable of elastically deforming between an active position and a passive position. The invention is remarkable in that the connector 10 comprises means for holding each locking element 41, 42 in active position when the adapter 40 is in an operating position, and in that for each locking element 41, 42, the connector 10 comprises an undercut enabling the elastic deformation of said locking element 41, 42 when the adapter 40 is in an assembly position.

The invention discloses an aqueous phase synthesis method of tetraphenylphosphine phenate. The preparation method comprises the following steps: subjecting triphenylphosphine to reacting with excessive halogenated benzene at certain temperature and pressure in the presence of a catalyst; after the reaction is finished, recovering the excessive halogenated benzene through distillation; then adding a certain amount of water to dissolve generated tetraphenylphosphine halide, and adjusting the pH value of an aqueous tetraphenylphosphine halide solution to be greater than 7 so as to allow the catalyst to be separated out in a precipitate form; and mixing the purified tetraphenylphosphine halide solution with phenol and caustic soda liquid, conducting reacting at a certain temperature, and carrying out heating dissolution, cooling crystallization, centrifugation and drying on the material liquid after the reaction is completed to finally obtain a tetraphenylphosphine phenate product. According to the invention, the above reactions are carried out in a pure water phase, and the tetraphenylphosphine phenolate product with high purity and stable components can be obtained; and meanwhile, the method has the advantages of environment-friendly process, simplicity in operation and high economic benefit.