2598results about How to "Regular shape" patented technology

The invention discloses an infrared touch screen and multi-point touch positioning method. That is, at least one touch-screen direction detection, a set of infrared emission scanning circuit corresponding two infrared receiver scanning circuit; a set of infrared emission scanning circuit of an infrared launching the beam of light emitted by the components of a scanning infrared receiver circuit in an infrared receiver components of the receiver at the same time, in the receiving area also receive another set of infrared scanning circuit components of the receiver to receive an infrared detection in infrared touch screen The algorithm process that could be used to determine in advance the scope of touch point touch-point detection algorithm module. The present invention generally use the touch position detection algorithm is a touch location coordinates point to touch another pre-detection algorithm to determine touch point in the region, in combination with detection algorithm is usually the touch location coordinates. The invention can identify two or more touch operation, while more effective identification can touch position.

This invention discloses an infrared touching screen and the multi-spot touching localization method, in an examination direction, the ray of light send out by the infrared emission part on the infrared emission sweep circuit not only can be received at least by one infrared sweep circuit's infrared receive part which is vertical to the part's position, but may also be received by another inclined relative infrared receive sweep circuit's infrared receive part at least which is deviated vertical to the part's position. Thus, in a scanning period, the ray of light send out by an infrared emission part may be received by two different position infrared receive parts in the different time, through a checking calculation between touching possible coordinate figure and location parameter, then may determine each touching position data, this invention realizes the multi-spot localization scanning examination method to be simple, the touching position data computation convenient, accurate, reliable, the circuit wafer type is few, the shape is rule, easy to realize the large scale production, does not have the complex succession corresponding relationships, easy to realize.

The invention discloses a multifunctional pressure cooker. The multifunctional pressure cooker comprises a cooker body and a cooker cover, the cooker cover comprises an upper cover body and an inner cover body, and the upper cover body is provided with a water injection port for injecting cooling water to the inner cover body; the multifunctional pressure cooker further comprises a water tank anda shielding cover; the multifunctional pressure cooker has a water-cooled cooking state in which the water tank is installed and a normal cooking state in which the shielding cover is installed, whenthe water tank is installed on the cooker cover, the water tank discharges water to the water injection port, and when the shielding cover is installed on the cooker cover, the shielding cover shieldsthe water injection port. The multifunctional pressure cooker can be used as a water-cooled pressure cooker by installing the water tank and used as a normal pressure cooker without installing the water tank.

The invention provides an intelligent photovoltaic array washing car used for washing photovoltaic arrays of a large-scale ground photovoltaic power station. A washing head supporting and locating unit and a power unit are arranged on the head portion and the tail portion of a crawler base respectively, a water storage unit is arranged adjacent to the power unit, and a washing head unit is provided with range finder sensors used for measuring the distance between the washing head unit and solar cell panels; the washing head supporting and locating unit comprises a movable base capable of rotating and transversely moving and a working arm set provided with a main arm and an end arm, wherein the main arm and the end arm can pitch respectively; a water pump of a water supply unit is driven by a hydraulic motor; a computer is used as a control kernel of a main control module of an operation control unit; a pair of proportional directional valves of the hydraulic control unit controls two base crawler traveling motors, and other directional valves are electromagnetic directional valves controlled by the main control module. According to the intelligent photovoltaic array washing car, the position and the posture of the washing head unit relative to photovoltaic array panels and the position and the posture of a car body relative to the photovoltaic arrays can be automatically controlled, and the intelligent photovoltaic array washing car is intelligent, efficient, flexible in operation, high in adaptability, easy and convenient to operate, concise in structure and good in washing effect.

The invention provides a method for growing ABX3 perovskite single crystals in a low-temperature solution. According to the invention, a continuous growing method is adopted, and the ABX3 perovskite single crystals are rapidly grown in the low-temperature solution continuously with multiple periods and different stages. The concentration of the solution is high, and the raw materials required by growing are uniformly dissolved. Growing periods are added, and growing conditions are finely controlled, such that ABX3 perovskite single crystals with large sizes, regular shapes and high quality can be easily obtained. The method has the advantages of simple process, high operability, mild growing conditions, low required temperature, low energy consumption, low equipment requirement, low cost, high success rate, fast single crystal growth speed, fewer defects, good stability, large single crystal size (>10mm)*(>10mm)*(>10mm), and the like. Therefore, basic mechanism theoretical researches on perovskite materials and related optoelectronic devices (including solar cell, photodetector, LED and laser) are promoted.

Disclosed is an inorganic medicine, particularly modified montmorillonite, method for preparing the same and use thereof. The said modified montmorillonite means that dioctahedron of natural montmorillonite is not destroyed and basic chemical composition for the same is not changed, and the microstructure stacked from dioctahedron layer is changed to decrease the thickness of stacking layer and to expose and increase the end face charge and the interlayer charge of montmorillonite, thereby resulting in its lower degree of C axis order. The present medical use of montmorillonite is thus significantly strengthened, particularly the reversal treatment effect on chronic atrophic gastritis. Also disclosed are a medicine composition containing modified montmorillonite and the reversal treatment effect of natural montmorillonite on chronic atrophic gastritis.

The invention provides a preparation method of cubic ultra-fine calcium carbonate particles. The method comprises the following steps: (1) adding a nucleation promoter to calcium hydroxide suspension liquid, wherein the nucleation promoter is selected from more than one of glucose, sucrose or sodium citrate; (2) carbonizing by introducing carbon dioxide until the pH value is 8-12, adding a crystal modifier and ageing for 0.5-10 hours, wherein the crystal modifier is selected from one of sodium chloride, sodium carbonate, sodium bicarbonate or sodium hydroxide; (3) further introducing carbon dioxide and carbonizing until the pH value is 6.5-7.0; (4) coating by adding a coating agent, filtering and drying to obtain a product, wherein the coating agent is selected from a resin acid, a resin acid alkali metal salt, a fatty acid or a fatty acid alkali metal salt. According to the calcium carbonate particles, the particle sizes are 90-180nm, the calcium carbonate particles are in a cubic shape, and the specific surface area is 10-18m<2>/g. Thus, the cubic ultra-fine calcium carbonate particles can be used as functional fillers in coating, rubber, plastic and sealant industries.

The invention discloses a method for performing microwave drying on grosvener siraitia and the grosvener siraitia dried by the same. The method comprises the following steps of: washing the grosvener siraitia completely and performing green-removing; punching a small hole on the top of the grosvener siraitia and the corresponding fruit navel at the bottom of the grosvener siraitia respectively; placing the punched grosvener siraitia into microwave drying equipment to dry for 8 to 10 minutes under the conditions of 2,400 to 2,500 MHz or 915 MHz and the temperature of between 50 and 60 DEG C; taking out the grosvener siraitia; placing the grosvener siraitia into the microwave drying equipment to dry for 8 to 10 minutes under the same conditions; taking out; cooling the grosvener siraitia at the temperature of between 0 and 4 DEG C for 3 to 5 minutes; and repeating the drying and cooling processes for 5 to 6 times to obtain grosvener siraitia. Compared with the prior art, the method has the advantages of simple and easily controlled process, short drying time and low energy consumption. The obtained dried grosvener siraitia has a complete and attractive fruit shape, green color, good mouthfeel and high retention rate of mogrosides V.

The invention provides an electric pressure cooker control method which comprises the following steps that an electric pressure cooker is controlled to heat with first power; when a first preset condition is met, a pressure valve is opened, so that air is discharged; the electric pressure cooker is controlled to heat with second power until the temperature in the electric pressure cooker is stable and food in the electric pressure cooker is made to be turned over completely; the pressure valve is closed and the electric pressure cooker is controlled to heat with third power, so that the electric pressure cooker enters a boosting stage, and the third power is smaller than the first power and the second power; when a second preset condition is met, the electric pressure cooker is controlled to heat with fourth power, so that the electric pressure cooker enters a pressure maintaining stage. According to the electric pressure cooker control method, the cooked food is complete, moisture is sufficient, the hardness is even, the taste is good, and the cooked food is prevented from pasting the bottom of the cooker and overflowing out of the cooker. The invention further provides the electric pressure cooker.

The invention discloses a method for preparing calcium sulfate crystal whiskers from desulfurized gypsum under normal pressure. The method comprises the following steps: 1) pickling; 2) dissolving; 3) rotating crystal; and 4) crystallizing, after crystallizing, carrying out solid-liquid separation, washing filter cake with water, and drying to obtain calcium sulfate crystal whiskers. The method disclosed by the invention has the advantages that: the preparation process is simple and is easy to achieve, and the production efficiency is high; higher-purity and higher-whiteness calcium sulfate crystal whiskers are prepared by adopting a normal-pressure recrystallization method, controlling related process conditions and utilizing the characteristic that the dissolubility of main component calcium sulfate dihydrate of desulfurized gypsum in specific solution changes obviously along with the temperature; obtained calcium sulfate crystal whisker product has regular morphology, low agglomeration and good dispersity; and in addition, inorganic acid solution used for recrystallization can be recycled, and inorganic acid solution is not consumed in the reaction process, thereby creating better economic benefit, environmental benefit and social benefit, reducing the burden of coal-fired power plant and increasing enterprise benefits.

The invention provides a method for preparing hollow spherical stannic oxide nano powder and belongs to the technical field of preparation of nano materials. The preparation method mainly comprises the steps of: respectively preparing tin salt and an alkali source into solution; uniformly dripping the solution of the alkali source into the solution of tin salt with stirring of a magnetic force, and stirring to obtain uniform precursor solution; performing hydrothermal treatment on the precursor solution in a reaction kettle; washing and drying the hydrothermal product to obtain the hollow spherical powder consisting of nano SnO2 particles. The prepared SnO2 hollow spheres have uniform size, regular shape, good crystallization and uniform thickness of a spherical shell. In the method, an expendable template is not needed, the process is simple and reaction conditions are mild, and the method has the characteristics of short preparation period, high product quality, high yield, low costand the like, and is an environmentally-friendly synthesis method.

The invention relates to a method for planting strawberry. The method is characterized by comprising the following steps of: (1) cultivating strong seedlings generally at the end of March to the beginning of April; (2) measuring soil, applying a fertilizer, deeply turning the soil, leveling the soil, and mixing uniformly; (3) finely making ridges, and absorbing water till saturation; (4) performing cultivation and detoxification on the strawberry seedlings; (5) performing transplantation generally at the end of August to the beginning of September; (6) spreading weeping pipes in October, covering a mulching film and a greenhouse film, and controlling the temperature of a greenhouse to be between 25 and 28 DEG C at the budding stage, between 24 and 26 DEG C at the flowering and fruiting stage and not less than 5 DEG C at night; (7) reasonably performing topdressing, and introducing bees at the beginning of flowers to pollinate; (8) fermenting rice chaff in the soil, and preventing and controlling diseases and insect pests; and (9) picking when 80 to 90 percent of strawberry fruits are red. The strawberry planting method is reasonable and scientific, has remarkable prevention effect on strawberry cultivation, and can increase the yield of the strawberry.

Normally, when stents are bent, inside the body of the stented patient, there is head-to-head collision between facing V-points on the inside of the bend. However, by alternating between two whole numbers the number of struts between successive connectors around the circumference of each of the stenting rings, the V-points are caused to veer circumferentially in opposite directions as they approach each other on the inside of the bend, so allowing them to pass by each other without collision, thereby allowing in the same stent both close packing of the ring stack, and an enhanced ability to tolerate severe bending, after placement in the body.

The invention discloses a method for preparing zinc sulfide nanospheres, which comprises the following steps: 1) preparing a solution A by dissolving zinc acetate and a surfactant in deionized water, and preparing a solution B by dissolving thioacetamide in deionized water; and 2) mixing the solution A and the solution B to obtain a reaction solution, reacting the reaction solution in a water bath and obtaining zinc sulfide nanospheres, wherein the particle size of the zinc sulfide nanospheres can be kept between 90 and 120 nanometers by controlling reaction conditions. The method has the characteristics of readily available raw material, simple equipment, easy operation, high efficiency, high speed and the like; and the prepared zinc sulfide nanospheres with regular form, high dispersity, controllable size, high yield and high stability are suitable for mass industrial production. The zinc sulfide nano material prepared by the method has a great application prospect in fields of fluorescent lamps, field emission flat-panel displays, light-emitting diodes, electroluminescent devices, solar cells and the like.

The invention discloses a method for preparing TPU (Thermoplastic Polyurethane) foamed beads by continuous extrusion foaming. The method comprises the steps of (1) mixing TPU particles with inorganic nano-particles which are organically modified, adding the mixed TPU particles into a material barrel of a first extruder, melting the TPU particles into a polymer melt by screw heating, and injecting a supercritical fluid into the tail end of the first extruder to mix the supercritical fluid with the polymer melt; (2) injecting a mixed polymer/high-pressure fluid melt into a second extruder through a melt pump, and gradually reducing the temperature of a heating area of the second extruder to obtain a polymer/supercritical fluid melt which is cooled and uniformly mixed; (3) extruding the polymer/supercritical fluid melt from an opening mold of the second extruder, and performing underwater ring cutting to obtain TPU foamed particles. According to the method, a TPU foamed particle molding body material which enables the foamed particles to be well bonded after steam molding can be quickly prepared.

The invention discloses a method for growing tabular gallium oxide crystals through an edge-defined film-fed growth process. The method comprises the following steps of: by taking high-purity gallium oxide powder as a raw material, selecting an iridium die with the top end having such a surface smoothness so that mirror face effect is achieved; by selecting beta-Ga2O3 single crystals with an end-face normal direction (010) as seed crystals and taking a (100) surface as a main growth surface, melting the material in a high-purity CO2 atmosphere for growing, increasing the temperature to the range from 10 to 20 DEG C after melting of the material is finished, keeping the temperature constant for 1-2 hours and then entering a growth stage; dividing the whole crystal growth into four parts: seeding, necking down, shouldering and isodiametric growth; employing different technical parameters at different growth stages until the whole growth process is completed, thereby obtaining tabular beta-Ga2O3 crystals. The tabular beta-Ga2O3 crystals prepared by the method provided by the invention has the characteristics of regular appearance, flat surface, no bubbles, no polycrystal and no stress fringes.

The preparation process of mesoporous spherical nano SiO2 particle includes mixing deionized water, CTAB, tetraethyl metasilicate, water solution or ammonia water solution of sodium hydroxide and alcohol solvent in certain proportion; heating reaction of the mixture inside PTFE reactor with protecting stainless steel casing and set in stove with blower; filtering of the reacted solution; washing and high temperature roasting to obtain mesoporous spherical nano SiO2 particle with homogeneous size. The process of the present invention is simple, low in cost and short in production period, and the prepared mesoporous spherical nano SiO2 particle is homogeneous in size, regular in appearance and ordered in pore channel.