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 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.

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 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.

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 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 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 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.