66results about How to "Same concentration" patented technology

The present invention relates to a fuel cell based on the in-plate counter-flow flow field and belongs to the technical field of fuel cell. The air flow field plate of the cell unit is provided with two pairs of air ports, two groups of air flow channels with are distributed separately with each other and two groups of air through-holes which pass through the air flow field plate thereby forming the inner counter-flow flow field of the air plate. The air flow field plate is also provided with two pairs of fuel ports, two groups of fuel flow passages which are arranged separately and two groups of fuel through-holes which pass through the fuel flow field plate thereby forming the inner couter-flow flow field of the fuel plate. The air flow field plate is also provided with two pairs of fuel ports which are provided with two pairs of air ports thereby realizing the integration of two flow field plates. In the fuel cell of the invention, the gradual reduction of the concentration of each component of the fluid in one flow passage is averaged by the gradual increase of the concentration of each component of the fluid in the adjacent flow passage thereby realizing that the concentration of each component in the fluid is kept same basically in any macroscopic micro cells in the whole active region.

The invention discloses a photoresist removing method which comprises the following steps of providing a sulfuric acid solution; adding hydrogen peroxide into the sulfuric acid solution periodically to form the washing liquid containing the sulfuric acid and the hydrogen peroxide; spraying the washing liquid on the photoresist of a semiconductor substrate to remove the photoresist. The method can prolong the service life of the washing liquid.

The invention discloses a method for preparing a hydro-demetalization catalyst, which comprises the following steps of: weighing or preparing an alumina carrier; (2) preparing an ammonia solution or an aqueous solution from a VIB metallic compound and/or a VIII metallic compound; and (3) dipping the alumina carrier obtained in the step (1) by using the solution prepared in the step (2), preheating an obtained wet catalyst in water-vapor-contained atmosphere, then, drying in air atmosphere, and then, roasting the catalyst to prepare the final catalyst. The hydro-demetalization catalyst prepared through the method disclosed by the invention is even in the distribution of active components and has higher activity and higher activity stability.

An embodiment of the invention discloses water and fertilizer integrated irrigation equipment. The water and fertilizer integrated irrigation equipment comprises a quantitative fertilizer feeding mechanism, a water and fertilizer mixing mechanism and a quantitative water delivery mechanism, wherein the quantitative fertilizer feeding mechanism comprises a fertilizer feeding barrel, a fertilizer feeding device is mounted at the bottom of the fertilizer feeding barrel, and a crank vibration mechanism for periodically impacting the fertilizer feeding barrel is arranged on the side surface of thefertilizer feeding barrel; the water and fertilizer mixing mechanism comprises a fertilizer mixing barrel, the fertilizer mixing barrel is connected with a fertilization pipe and a plurality of waterinlet pipes, the water inlet pipes are eccentrically mounted on the side wall of the fertilizer mixing barrel, and a filter cartridge is arranged in the fertilizer barrel located below the fertilizerfeeding barrel; the quantitative fertilizer feeding mechanism comprises a water delivery pipe, one end of the water delivery pipe is connected with a water supply end, the other end of the water delivery pipe is connected with the water inlet pipes, and a water delivery pump and a meter regulator are mounted on the water delivery pipe. With the adoption of the quantitative fertilizer feeding mechanism and the quantitative water delivery mechanism, the fertilizer and water are mixed in an equal ratio in real time in the water and fertilizer mixing mechanism, concentration of a fertilizer and water mixture is kept roughly the same all the time, so that fertilizer feeding efficiency is improved, the equipment is simplified, and space and production costs are saved.

The invention relates to a composite type reactive dye composition, which is characterized in that the composition is formed by mixing four kinds of reactive dyes A, B, C and D in percentage by mass: 50 to 100 percent of dye A, 0 to 50 percent of dye B, 0 to 50 percent of dye C, 0 to 50 percent of dye D, and the balance is auxiliaries, and the structure general formulas of the four kinds of reactive dyes A, B, C and D are respectively (1), (2), (3) and (4) shown as the accompanying drawing. The composite type reactive dye composition has better compatibility, the dyeing process is easy to control, and good dyeing stability is realized.

The invention provides an adjustable isotope labeling device for plant photosynthesis. The device is characterized in that organic glass 1 and a sealing ring 2 form an external circulating leaf chamber 3, the external circulating leaf chamber 3 is communicated with a carbon dioxide absorption tank 11 through an organic hose 13, the external circulating leaf chamber 3 is communicated with a circulating pump 4 through an organic hose 5, the external circulating leaf chamber 3 is fixed on a multi-angle fixing frame 6 through a metal supporting rod 7, a carbon dioxide concentration detection probe 8 is arranged in the external circulating leaf chamber 3 and is communicated with a carbon dioxide detector 10 through an optical fiber 9, the carbon dioxide absorption tank 11 is communicated with the circulating pump 4 through an organic hose, a carbon dioxide supply pipe 12 is communicated with the organic hose 5 through a three-way electronic control valve, carbon dioxide supply is guaranteed by electronically controlling the flow speed of carbon dioxide, and a carbon dioxide storage tank 15 is communicated with the three-way electronic control valve and the organic hose 5 through the carbon dioxide supply pipe 12.

The invention relates to an intelligent tea art machine automatic vending system. The intelligent tea art machine automatic vending system comprises a tea powder barrel (100), a tea powder transmitter (200), a tea powder collector (300), a heater (400), a refrigerator (500), a water pump (600), a flowmeter (700), a watering barrel (800), a tea bag shelf (900), a tea water collection cup (1000), a tea cup delivery machine (1100), a radiator (1200), a magnetic valve (1300) and a tea powder collector platform (1400). The intelligent tea art machine automatic vending system is different from a traditional automatic vending machine vending tea water and drink and the like. The intelligent tea art machine automatic vending system can effectively solve defects or disadvantages of the traditional automatic vending machine vending the tea water and the drink such as tea water concentration can't be guaranteed, stored tea leafs are easy to go bed, and residual tea bags or abandoned filter papers are generated and the like.

The invention relates to a portable analysis system for measuring photosynthesis of plants in field in real time, which is composed of an external circulating leaf chamber, a carbon dioxide absorption cell, a circulating pump, a carbon dioxide concentration detector, a carbon dioxide storage tank and a multi-angle fixing frame, and the external circulating leaf chamber is fixed on the multi-angle fixing frame; the carbon dioxide storage tank, the carbon dioxide absorption cell and the circulating pump are communicated with the external circulating leaf chamber through organic hoses and valves, and the carbon dioxide concentration detector is arranged in the external circulating leaf chamber. According to the system, the carbon dioxide concentration in the leaf chamber can be completely the same, non-uniform carbon dioxide concentration caused by photosynthesis in the leaf chamber is avoided, feasibility is provided for an experiment for measuring the photosynthetic intensity of a whole plant or a single leaf for a long time, meanwhile, the temperature rise of the closed environment of the leaf chamber can be effectively slowed down, and the stability of the environment humidity is effectively maintained.

The invention relates to urea [<14>C] capsules and a micro-packaging method thereof. The method comprises: a solution preparation step: preparing an absolute ethyl alcohol solution containing urea [<14>C]; a split charging step: packaging the urea [<14>C]-containing absolute ethyl alcohol solution into capsules; a drying step: drying the capsules charged with the urea [<14>C]-containing absolute ethyl alcohol solution, thus obtaining the capsules containing urea [<14>C] powder. With absolute ethyl alcohol as a carrier medium, the method of the invention improves the packaging precision of theurea [<14>C] capsules. And no carrier medium residual is left in the prepared urea [<14>C] capsules, so that a hidden danger of the carrier medium is avoided and the production cost is reduced. Meanwhile, with a liquid solvent as the carrier medium, the method provided in the invention avoids pollution of radioactive powder, and the employment of an automatic liquid separator raises the packagingprecision and makes the operation process more secure simultaneously, so that influences to the environment can be reduced to the utmost.

The invention discloses a pesticide spraying device for preventing plant diseases and insect pests of peony and relates to the technical field of planting. The pesticide spraying device comprises a bottom plate, wherein the upper surface of the bottom plate is fixedly connected with the lower surface of a placement plate by virtue of a first electric hydraulic rod; and a bearing is arranged on theupper surface of the placement plate. According to the pesticide spraying device for preventing plant diseases and insect pests of peony, due to mutual cooperation of a second electric hydraulic rod,a first connecting block, a second connecting block, a pin shaft, a spraying pipe, a hose and a delivery pipe, the second electric hydraulic rod elongates to drive the spraying pipe to rotate to a horizontal state, the first electric hydraulic rod drives the spraying pipe to move to an appropriate height for spraying pesticides, and the pesticide spraying efficiency can be ensured to a certain degree. Meanwhile, peony leaves can be fully sprayed, the using effect of the pesticide can be ensured to a certain degree, the spraying pipe can be adjusted to be nearby the peony leaves for spraying pesticides, and the condition that the liquid medicine flies apart to cause waste because the spraying pipe is extremely high can be avoided.

The invention discloses a single-component water-based top-coat for a plastic runway. The single-component water-based top-coat is prepared from the following raw materials in parts by weight: 45-55 parts of waterborne acrylic resin, 30-40 parts of waterborne polyurethane resin, 1-5 parts of a water-soluble graphene aqueous dispersion, 0.3-0.5 part of a wetting agent, 0.2-0.4 part of a defoaming agent, 5-7 parts of a cosolvent, 0.3-0.5 part of a thickening agent, 0.5-0.7 part of a preservative and 3-6 parts of deionized water. The single-component water-based top-coat for the plastic runway has the advantage of relatively good wear resistance; the invention also provides a preparation method of the single-component water-based top-coat, and the graphene in the raw materials can be uniformly dispersed in the single-component water-based top-coat, so that the wear resistance of the top-coat is improved.

The invention discloses a method for culturing anaerobic ammonia oxidation granular sludge resistant to high-concentration spiramycin. The method comprises the following steps: adding spiromycin into the influent water of an anaerobic ammonium oxidation reactor and tracing the changes of the effluent water of the reactor, wherein the influent water contains nitrite nitrogen and ammonia nitrogen in a mass concentration ratio of 1: (0.9-1.1); stopping the addition of spiramycin according to the condition of the effluent water of the reactor, proportionally reducing the concentrations of ammonia nitrogen and nitrite nitrogen in the influent water, and restoring the operating performance of the reactor by proportionally and gradiently increasing the concentrations of ammonia nitrogen and nitrite nitrogen in the influent water; and after the reactor performance is restored, adding spiromycin again, wherein the denitrification performance of the reactor is stabilized after fluctuation, and the cultivation of the anaerobic ammonia oxidation granular sludge resistant to high-concentration spiramycinis completed. The method of the invention gradually induces changes in spiramycin resistance genes by the means of primary exposure-gradient restoration-secondary exposure, so anaerobic ammonia oxidation granular sludge resistant to long-term spiramycin interference is cultivated.

The invention discloses a centralized liquid supply system of polishing machines. The centralized liquid supply system comprises a polishing liquid concentration part, a polishing liquid mixing part and a liquid supply and backflow pipeline. According to the centralized liquid supply system of the polishing machines, centralized liquid supply is carried out on various polishing machines through aliquid supply pool and a liquid supply pipe, and centralized management and operation of polishing liquid are facilitated. Only the concentration of the polishing liquid in the liquid supply pool needs to be detected every time, control over the concentrations of the polishing liquid of the polishing machines can be achieved, it is guaranteed that the concentrations of the polishing liquid of thepolishing machines is the same, and quality conditions have no large difference.

The invention discloses a fertilizer stick for potted plants, and relates to the technical field of fertilizer sticks. With prior arts, when watering or fertilization is carried out upon a potted plant, wasting or soil compaction is caused. The invention aims at solving the problems. The fertilizer stick comprises an inner-layer fertilizer stick and an outer-layer fertilizer stick with opened tops, and a sealing cap used for sealing the inner-layer fertilizer stick. The inner-layer fertilizer stick is connected with the outer-layer fertilizer stick. A certain gap is formed between the inner-layer and outer-layer fertilizer sticks. A small hole is arranged on the inner-layer fertilizer stick. A sealing device used for sealing or opening the inner-layer fertilizer stick small hole is arranged between the inner-layer fertilizer stick and the outer-layer fertilizer stick. The bottom of the outer-layer fertilizer stick is opened. The fertilizer stick provided by the invention can be used for independently watering or fertilizing plants.

The invention belongs to chemical equipment, and particularly relates to a membrane catalytic reactor. The membrane catalytic reactor comprises a feed port, a discharge port, a raw material chamber, a product chamber, a jacket, an electric stirrer and a catalytic membrane, wherein the electric stirrer is arranged above the raw material chamber; stirring paddles extend into the raw material chamber; the catalytic membrane is arranged between the raw material chamber and the product chamber; the feed port is formed on the top of the raw material chamber; the discharge port is formed at the bottom of the product chamber; and the jacket is arranged outside the raw material chamber, the catalytic membrane and the product chamber. By adopting the membrane catalytic reactor for performing esterification reaction, the energy consumption is low, and the reaction efficiency is high; the problems of separation and recovery of a catalyst are avoided, and the product cost is reduced; strongly acidic cation exchange resin powder is used as a catalytically active matter; polyethersulfone is used as a base material; a hybrid membrane which is prepared by a phase conversion method is a catalytic membrane which has higher efficiency for catalytic esterification reaction and has no problems of equipment corrosion, environment pollution and the like; and the membrane catalytic reactor has the advantages of simple equipment structure, high adaptability, easiness in control of process, convenience in operation and suitability for industrial implementation.

The invention discloses passive heterotopic cultivation equipment for aquatic plants. The equipment comprises a box body with an open upper end, wherein a plurality of liquid storage cylinders are uniformly arranged on the side wall of the box body; a plurality of limit rods are symmetrically and vertically connected on the inner bottom wall of the box body; each limit rod is slidably sleeved witha floating plate; a plurality of control mechanisms matched with the corresponding floating plates are uniformly arranged on the box body; each control mechanism comprises a mounting groove formed inthe box body; sliding blocks are elastically connected in the mounting grooves through return springs; and the side walls of the sliding blocks are in sealed sliding connection with the walls of themounting grooves; communication pipes communicate between the mounting grooves and the corresponding liquid storage cylinders; and L-shaped channels matched with the communication pipes are formed inthe sliding blocks. Movement of the sliding blocks are controlled by cooperation of the floating plates and the return springs, so that the function of opening and blocking the communication pipes isachieved, the function of automatically adding a nutrient solution is achieved, and the situation that plants are damaged by mistaken or insufficient addition is avoided.