60results about How to "Control accumulation" patented technology

The invention discloses application of monopotassium phosphate to reduce rice cadmium accumulation. The application disclosed by the invention is as follows: monopotassium phosphate is applied to soil in the event of preparing a land before transplanting rice; or/and monopotassium phosphate is sprayed to the upper parts of rice after transplanting rice till maturing. According to the invention, novel application of monopotassium phosphate is provided; monopotassium phosphate is capable of effectively controlling cadmium accumulation in rice; monopotassium phosphate is capable of respectively reducing cadmium contents in rice cadmium high-accumulation rice Yongyou 9 and rice cadmium high-accumulation rice Xiushui 09 brown rice to be above 80% and 85% maximally; the cadmium contents in brown rice are only 0.04 mg/kg and 0.02 mg/kg and are far below nationally regulated 0.2 mg/kg; a good solving way is provided for rice heavy metal pollution; furthermore, both the application number and the application amount of monopotassium phosphate are very low; the application disclosed by the invention is low in cost and convenient for operation.

The invention discloses a heavy metal soil repairing material in a paddy field based on biocarbon blending fertilizer. The biocarbon blending fertilizer is prepared by mixing biocarbon with chemical fertilizer; the biocarbon blending fertilizer is applied to soil, so that the effects of restoring heavy metal soil environments and improving soil physicochemical condition can be met, the effectiveness of nutrient elements of soils also can be affected, efficiency-increasing and production-increasing effects of carbon fertilizer are improved, and meanwhile, by utilizing the biocarbon subjected tospecial processing, the specific surface area is further improved, and thus, adsorption capability of pollutants in the soils can be enhanced; and saturated organic pollutants are decomposed througha microbial agent, so that the biocarbon can keep an adsorption effect on the pollutants in the soils for a long time, and improve a comprehensive treatment effect of the soils; and compared with conventional compound fertilizer, the biocarbon blending fertilizer disclosed by the invention has the advantages that accumulation of heavy metals is controlled, the yield of paddy rice can be increased,and the biocarbon blending fertilizer has popularization and application prospects in control of ecological environment pollution in the paddy field and application reduction and efficiency improvement of chemical fertilizer.

A pressure sensor is provided. The pressure sensor includes a body, a sensing element, and a projection part. The body has an internal space and an introduction passage. The internal space is in communication with an outside of the body through the introduction passage. The sensing element is disposed in the internal space of the body and capable of detecting pressure of air in the internal space. The projection part is disposed in the internal space of the body or the introduction passage of the body, and inhibits liquid from entering the internal space.

The invention belongs to the technical field of plant gene engineering, and particularly relates to GhLac1 gene of broad-spectrum resistance of mediated cotton. According to the invention, the nucleotide sequence of the GhLac1 gene is as shown by SEQ ID NO:1, the sequence of amino acid of coded protein thereof is as shown by SEQ ID NO:2, and an open reading frame thereof is the sequence corresponding to 20-1720th basic group shown by the SEQ ID NO:1. The invention also discloses an application of the gene in cotton heredity and transformation. Through excessive expression of the gene, the synthesis of lignose in the plant can be promoted, so as to accelerate lignification process, and meanwhile, to accelerate reconstruction of cell walls of damaged cells. The cloned gene provided by the invention can be applied to the select breeding of broad-spectrum disease resistance or insect-resistant novel varieties through heredity and transformation.

The invention discloses a method for controlling rice heavy metal mercury accumulation by salicylic acid. The method is characterized by sequentially comprising the following steps that (1) after the soil preparation, rice seedlings are transplanted; (2) the salicylic acid is prepared into a water solution with the concentration being 1 to 50mg/L, after 7 to 21 days of the rice transplanting, on the 1st to 7th days of the jointing period, the 1st to 7th days of the flowering period and the 7th to 21st days of the flowering period, the salicylic acid solution is sprayed on leaf surfaces by a sprayer, and 3L salicylic acid solution is uniformly sprayed in each region with the dimension being 3.5m*4.0m. Through the spraying of the salicylic acid solution with the proper concentration in each growth period of the rice, the mercury contents of the produced rice are respectively reduced by 30 percent to 60 percent, and in addition, a conventional agricultural method can be adopted for soil preparation, seedling culture, transplanting and field management in the rice production process.

The invention belongs to the technical field of heat-resisting steel welding, particularly relates to a repairing method of a high-chromium martensite heat-resisting steel casting, and provides a welding and repairing method of a novel heat-resisting steel casting. The method comprises the main steps of defect treatment before welding, welding preheating, welding, heating after welding, and heat treatment after welding. By the adoption of the welding and repairing method, generation of weld cracks is reduced, the yield of welding and repairing is increased, the number of times of welding is reduced, and the repairing cost is reduced substantially.

The invention provides application of FoF1-ATPasebeta protein in promotion or reduction of adsorption of cells on apoptotic bodies. An amino acid sequence of the FoF1-ATPasebeta protein contains a WalK A motif and a WalK B motif.

The invention discloses a method adopting sodium nitroprusside for controlling rice heavy metal mercury accumulation. The method sequentially comprises the following steps that (1) after the soil preparation, rice seedlings are transplanted; (2) the sodium nitroprusside is prepared into a water solution with the concentration being 1 to 50mg/L, the sodium nitroprusside solution is sprayed onto leaves by a sprayer on 7th day to 21st day after the rice transplanting, 1st day to 7th day in the flowering stage and 7th day to 21st day in the flowering period, and 3L of the water solution is uniformly sprayed in each 3.5m*4.0m region. The sodium nitroprusside solution with the proper concentration is sprayed in each growth period of the rice, so the mercury content of the produced rice is respectively reduced by 30 percent to 50 percent, and in addition, in the rice production process, agricultural conventional methods are respectively adopted for land preparation, seedling culture, transplanting and field management.

The invention relates to a method for continuously diluting aquafortis and controlling the production of NO2, which is characterized in that the method comprises the following steps: causing the auqafortis to flow through a flat-bottomed channel; continuously spraying water to the surface of flowing nitric acid from the upper part, so that the auqafortis and the water are mixed during the flowing process; and collecting diluted nitric acid by using a container arranged at the other low end of the flat-bottomed channel. An interlayer is arranged at the bottom part of the flat-bottomed channel; and a cooling medium is introduced into the interlayer, so as to further reduce and dilute the temperature of the nitric acid. The invention has the advantages that the water is continuously sprayed on the surface of the flowing nitric acid to increase and dilute the contact area of a heating part, air and the cooling medium; and liquid finishes the mixture during the flowing process and immediately carries away heat generated to control heat accumulation during the diluting process, so that the temperature of the heating part is reduced, the decomposition of the nitric acid is controlled or avoided, and the continuous and automatic diluting process of the auqafortis is achieved.

The invention discloses a preparation method of a diamond reinforced silicon carbide (SiC) composite wafer, and belongs to the field of semiconductor material preparation. The method comprises the following steps: plating a 5-20nm SiNx thin layer on a SiC carbon polar surface subjected to vacuum heat treatment at 800-1000 DEG C; and after microwave hydrogen plasma treatment is carried out for 1-5 min, methane with the hydrogen flow proportion being 5-10% is introduced, the operation lasts for 5-15 min, and diamond high-density nucleation and C-Si bond formation are achieved based on nitrogen atom escape and carbon atom permeation. And then, silane with the hydrogen flow proportion being 0.1-1% is introduced while methane is reduced to 3%-5% for growing diamond, the silane flow is slowly reduced within 10-30 min till closing, and the SiC/diamond composite gradient transition layer is deposited. And then repeating the circulation process of introducing nitrogen with the hydrogen flow proportion of 1-5% every 5-20 min in diamond growth and keeping for 1-5 min, closing the nitrogen and methane after the diamond reaches a certain thickness, slowly cooling to 600 DEG C or below in hydrogen plasma, then raising the temperature to 800-1000 DEG C, treating for 0.5-5 h, and slowly cooling, and finally, the diamond/SiC composite wafer material with low stress and strong combination is realized by polishing the diamond surface.

The invention discloses an aquarium filtering material with high porosity and a preparation method thereof, and belongs to the field of aquatic filtering materials. The filtering material is of a hollow cylindrical shape or a square three-dimensional shape and is prepared from the following raw materials in part by weight: 1 part of tourmaline, 12 parts of diatomaceous earth, 57 parts of attaclay, 10 parts of albite powder, 5 parts of quartz powder and 15 parts of charcoal powder. The finished product can be obtained by the following steps: raw material mixing, extrusion molding, drying, and certain curve sintering. The filtering material and the preparation method have the advantages that the establishment and regeneration of a nitrifying system can be effectively accelerated due to the large cultivation specific surface area during biofiltration; and the pore structure of high permeability can provide the largest residence for aerobic bacteria and anaerobic bacteria, control the accumulation of nitrite and nitrate and the occurrence of disease, and keep the sustained and healthy growth of organisms.

The invention discloses a method for gas extraction on the weak surrounding rock fully mechanized caving face, and the method is suitable for a mine where the gas concentration of the caving face is liable to overrun in the top coal caving process of the thick coal seam weak surrounding rock fully mechanized caving face. A vertical pipe is constructed to the upper portion of a coal seam through a pneumatic anchor rod driller at the upper corner of an air return roadway of the fully mechanized caving face, the gas extraction vertical pipe is arranged in the coal seam, a large amount of gas generated in the top coal caving operation process is extracted timely, and accordingly the gas concentration of the fully mechanized caving face is reduced; the problem that under the condition of weak surrounding rock, hole-forming fails when oblique-crossing layer penetrating pre-extracting drilling is constructed on the upper portion of a goaf in the air return roadway is solved; the large amount of gas rushing out of fully mechanized caving face coal masses in the top coal caving operation process can be extracted, so that the gas concentration of the caving surface and the upper corner is reduced effectively; and meanwhile within the period of caving surface advancing, the gas of the goaf behind the caving face can be further extracted, the emission amount of the gas in the goaf is reduced, and the gas concentration of the caving surface is reduced. The structure is simple, mounting is convenient, operation is easy and convenient, and practicability is high.

The invention provides an injection molding machine. The injection molding machine comprises a base, a hydraulic mechanism shell is fixedly connected to the outer surface of the upper end of one sideof the base, an ejection mechanism shell is fixedly connected to the other side of the base, and a hydraulic cylinder is fixedly connected to one side of the hydraulic mechanism shell. According to the injection molding machine, plastic grains in a hopper can be stirred through a stirring device, so that the plastic grains are finer, air mixed in the plastic grains is scattered, the plastic grainsare automatically and uniformly discharged through a discharging device without blocking a discharging port, the plastic grains stirred in advance enter a charging barrel and then are quickly and uniformly melted, and thus the product quality is improved; by means of a double-cavity structure, two sets of products can be formed in an injection molding mode at a time when small products are produced, so that the production efficiency is doubled; and double cavities can be separated through a separation mechanism, so that product adhesion is avoided, and molten plastic in a mold is prevented from flowing back.

The invention discloses chain type precise quantitative feeding equipment for cage rearing breeding hens. The chain type precise quantitative feeding equipment comprises a chain type feeding mechanism arranged in feeding troughs and used for automatically conveying feed, feed boxes arranged corresponding to layers of corresponding cage body feeding troughs, a feed conveying mechanism used for quantitatively conveying the feed to the feed boxes and a feed tower used for storing the feed, wherein an independent feed receiving opening is formed in the top of each feed box; and the feed tower quantitatively conveys the feed to different feed receiving openings through the feed conveying mechanism, the feed boxes quantitatively release the feed into the feeding troughs through the chain type feeding mechanism, and feed blocking devices used for controlling the feeding duration are arranged above the feeding troughs. Each feed box is independently provided with the feed receiving opening, the feed in the feed tower is quantitatively conveyed into each feed box through the feed conveying mechanism, the feed is quantitatively supplied only to the feed box corresponding to one feed receiving opening each time, and then accurate and quantitative feeding of chickens is realized through uniform feed release of the chain type feeding mechanism and control over the ingestion time of the feed blocking devices.