41 results about "Particle technology" patented technology

The invention discloses a method for detecting an object to be detected by using an SPR biosensor. The method uses a biotin-streptavidin-magnetic particle as a signal reporting molecule which can amplify a signal of a hybridization result; therefore, the problem that marking of a probe or an object to be detected before hybridization influences natural binding of biological molecules is avoided, the requirement of improving detection sensitivity of the SPR biosensor is realized, and generated signals are stable and are easy to detect, which enables result detection and analysis to be substantially simplified. According to the invention, amplification of a detection signal is realized after hybridization, so variation and variation quantity of SPR signals before and after the detection signal is amplified can be more visually and clearly observed; meanwhile, the biotin-streptavidin-magnetic particle technology is used in the invention, and no expensive detector is needed, thereby reducing technical cost and economic cost needed for enhancing sensitivity of the biosensor.

A device for grading particle sizes of nanometer particles on line comprises a high-voltage power supply device, a neutralization radioactive source, a sampling device, an air intake device, an electrotransport device, a collection head and a filtering device; the design of the air intake device ensures that more stable airflow can be obtained and the influence of diffusion movement of particles can be reduced; and an internal filtering module greatly reduces the volume and the complexity of the device. According to the invention, the principle of electrotransport of particles is adopted, namely, particles having different particle sizes but same quantity of electric charge are different in transport ratio in an electric field; and size grading can be performed to sampled gas real-timely,and the number concentration of particles with different particle sizes can be measured according to the condensation nucleus particle technology. The device provided by the invention is compact and small in structure and strong in applicability, and can supply reliable particle size and number concentration information to the fields of existence and application of various nanometer particles.

The invention discloses a chromogranin A chemiluminescence immunoassay reagent kit and a preparation method of the reagent kit. The reagent kit comprises the following ingredients: 1) chromogranin A standard products; 2) horseradish peroxidase labeled chromogranin A monoclonal antibodies; 3) chromogranin A monoclonal antibody covered magnetic particles; 4) white non-transparent micro porous plate; 5) cleaning solution and 6) chemiluminescence substrate A and B work solution. The chemiluminescence immunoassay and the nanometer magnetic particle technology are combined, and the chromogranin A chemiluminescence immunoassay reagent kit is provided. The defects of low sensitivity and poor accuracy of the traditional enzyme-linked immunosorbent assay (ELISA) method are overcome, the radioactive pollution of the radioimmunoassay (RIA) technology is avoided, and the chromogranin A chemiluminescence immunoassay reagent kit and the preparation method thereof have the advantages that safety is realized, the environment is protected, the specificity is high, the sensitivity and the accuracy are high, and the like.

The invention specially relates to a preparation method of an inorganic superfine powder/water medium high-concentration solid-liquid suspension, belonging to the fields of granule technologies, chemical materials and preparation methods. In the preparation method, a steric hindrance repulsion action is formed to realize the stable dispersion of inorganic superfine powder in a water medium by adopting the absorption of a CND hyper-dispersant on the surface of the inorganic superfine powder so that the uniformly and stably dispersed high-concentration solid-liquid suspension is prepared. The invention ensures that the inorganic superfine powder has stable suspension characteristics by uniformly dispersing the inorganic superfine powder into the water medium through the absorbing modification of the CND hyper-dispersant on the surface of the inorganic superfine powder and achieves the weight percentage concentration (the weight percentage of the inorganic superfine powder and the water medium) by 70 percent; in addition, the high-concentration solid-liquid suspension can be stably placed for 6-12 months without obvious laying and sediment and can be applied to the fields of coatings, electronic display materials, and the like.

The invention discloses an antifreeze liquid for transporting bulk granular goods, which is composed of the following raw materials: magnesium chloride, calcium chloride, triethanolamine, sodium citrate, hydroxyethyl cellulose and water. The advantages of the present invention are: the present invention uses magnesium chloride, which is non-irritating to the skin and less corrosive to vehicles than calcium chloride, and adding an appropriate amount of calcium chloride can meet the technical standards of "Technical Conditions for Antifreeze Liquid for Bulk Granular Cargo Transport" requirements, and can significantly reduce the freezing point of antifreeze. Hydroxyethyl cellulose is first added with water and stirred, then poured into the stirred solution, and then stirred to dissolve, which solves the problem of easy agglomeration and dissolution of hydroxyethyl cellulose. Insufficient problem, its thickening, suspension, bonding, and film-forming effects are very significant, which solves the adhesion problem of spraying antifreeze on the facade of the wagon compartment of transport vehicles. The invention is widely used in the transportation of bulk granular goods.

The invention discloses an external particle heat absorber and a solar power generation system. A particle heat exchanger internally provided with a particle channel and a working medium channel is arranged, meanwhile, a heat absorption pipe group is arranged to be communicated with two ends of the working medium channel to form a circulating pipeline, the working medium channel is in heat transfer contact with the particle channel, and after a phase change working medium in the heat absorption pipe group absorbs heat and is evaporated into a gaseous phase change working medium, the gaseous phase change working medium enters the working medium channel to exchange heat with the cold particles in the particle channel and is condensed into a liquid phase change working medium which flows back to the heat absorption pipe group. The heated hot particles can be output to next external equipment from the output end of the particle channel. The liquid phase change working medium is arranged as the middle heat exchange medium, heat is transmitted to the particles after evaporation, and the particles are heated to the needed temperature, so that high efficiency is achieved, and the problem that an existing particle heat absorber is low in heat absorption efficiency is solved. Meanwhile, the particle technology is low in price and higher in heat absorption temperature, and the kilowatt-hour cost of a photo-thermal power station can be greatly reduced under the condition of the same heat absorption efficiency.

The invention is in the technical field of particles; more particularly, the invention relates to large agglomerate particles obtainable by spray-drying agglomeration.

The invention relates to the technical field of traditional Chinese medicine formula granules and discloses rhizoma dioscoreae formula granules and a preparation method thereof. The method comprises the following steps: (1) crushing rhizoma dioscoreae into granules with the granularity of 40 to 100 meshes; (2) mixing the rhizoma dioscoreae granules obtained by step (1) and an ethanol water solution, wherein the volume ratio of the rhizoma dioscoreae granules to the ethanol water solution is 1 to (7 to 12); (3) heating and decocting for 1 to 3 h, and filtering; (4) performing vacuum concentration on the filtrate to obtain a concentrated solution with the relative density of 1.1 to 1.2; (5) mixing the concentrated solution and pharmaceutically acceptable auxiliary materials; drying and collecting dry paste powder; (6) crushing the dry paste powder and sieving through a sieve with the size of 80 meshes; mixing in a mixing groove; (7) granulating prepared rhizoma dioscoreae powder and sieving the granules through a sieve with the size of 20 meshes and a sieve with the size of 50 meshes sequentially. The rhizoma dioscoreae formula granules prepared by the method provided by the invention have relatively high active component content and the size of the granules is uniform.

The present application relates to a real-time on-line cleanliness monitoring system based on LoRa technology; the system comprises an upper computer, a LoRa data transmission station connected with the upper computer by RS232 data line, at least one particle counter connected with the LoRa data transmission station by communication based on LoRa signal, and an alarm device installed in each particle counter. The LoRa data transmission station is used to convert the RS232 signal transmitted by the host computer through the RS232 data line to the LoRa signal. It can solve the problems that thereal-time communication between host computer and particle technology device is realized by using RS485 technology in the existing real-time on-line monitoring system of cleanliness, and the deployment is complicated and the construction is difficult. Because the cleanliness real-time on-line monitoring system adopts Lora transmission technology to realize wireless data transmission, it does not need to deploy entity data transmission line, so it can reduce the deployment difficulty of the system.

The invention discloses a CLJ-E portable particle technology device, and relates to the technical field of air quality detection.The CLJ-E portable particle technology device comprises a CLJ-E detection machine body, a storage groove is formed in the CLJ-E detection machine body, a sliding groove is formed in the storage groove, a damping sliding block is connected to the interior of the sliding groove, a storage box is installed at the other end of the damping sliding block, and the storage box is connected with the CLJ-E detection machine body. A pull ring is installed on the left side of the storage box, a limiting rod is arranged in the storage box, a supporting frame is connected to the opposite face of the limiting rod, a detection head is installed on the top of the supporting frame, and a connecting pipe is arranged above the detection head. According to the CLJ-E dust particle counter, the CLJ-E detection machine body, the pull ring, the storage box and the supporting frame are arranged, the storage box can be conveniently driven to move by operating the pull ring, in this way, the storage work of the supporting frame can be conveniently completed, the storage mechanism is convenient to use, time does not need to be spent on searching a supporting part of the CLJ-E dust particle counter, and the use performance of the equipment is improved.

The invention relates to a method for using gas fat coal as a carbonaceous reducing agent in silicon industry. According to the method, gas fat coal, silica powder and a binder are used as raw materials, and the mixture is molded and dried through a hot press molding process to prepare the carbonaceous reducing agent product with characteristics of low ash, high carbon, good chemical activity, high specific resistance and high mechanical strength. According to the present invention, the high-temperature dry distillation carbonization and sintering process is not required, and the dried agglomerate particles can be directly used as the carbonaceous reducing agent for furnace smelting, and can replace carbonaceous materials such as petroleum coke, charcoal, semi coke and the like, wherein the gas generated in the smelting process is used for producing coal gas through the recovery device, and the agglomerate particles after the pyrolysis and dry distillation have the technical indexes superior to the traditional carbonaceous reducing agent standard, and have characteristics of good gas permeability, high porosity, low production cost, low power consumption, improved product quality,resource recycling and the like.

The invention relates to the technical field of traditional Chinese medicine formula granules and discloses a preparation method of manyflower gueldenstaedtid herb formula granules with effects of clearing heat, removing toxins, cooling blood and diminishing swelling as well as formula granules prepared by the method. The method comprises the following steps: (1) crushing a medicinal material of dried manyflower gueldenstaedtid herb; (2) soaking powder obtained in step (1) by hot water; (3) performing filtration, and mixing an obtained filter cake with ethanol; (4) performing ultrasonic extraction for 2-3 times; (5) performing filtration, and concentrating a filtrate under reduced pressure; (6) mixing a concentrated liquid with pharmaceutically acceptable auxiliary materials; (7) carryingout freeze drying, collecting dry paste powder, crushing and sieving the paste powder by a 80-mesh sieve, and mixing obtained paste powder in a mixing tank; and (8) granulating and shaping the obtained manyflower gueldenstaedtid herb paste powder. The manyflower gueldenstaedtid herb formula granules prepared by the method in the invention have high active component content and uniform granule sizes.

The invention relates to the technical field of formula particle of traditional Chinese medicine and discloses a formula particle of Baiyun ginseng and a preparation method thereof. The method comprises six procedures as follows: (1) crushing the dried medical materials of Baiyun ginseng; (2) soaking the formula particles of Baiyun ginseng in 3-5 times the volume of hot water; (3) filtering and mixing up the filter cake and 8-10 times the feed quantity of ethanol and acetone mixed solution; (4) extracting 2-3 times in ultrasonic, filtering, decompressing and concentrating the filtrate; (5) mixing up the concentrated filtrate and accessories, drying, collecting dry paste powder, crushing more than 80 of visual screens, and placing in a mixing vessel to mix; and (6) taking Baiyun ginseng paste powder, pelletizing and 20 visual screens and 50 visual screens particles in whole grain being used, so that the formula particles of Baiyun ginseng are obtained. The formula particle of Baiyun ginseng made by the method is high in active component contend, and the particles are uniform in size.

The present invention relates to a simultaneous analysis method for a target using a plurality of metal nano-tags and, more particularly, to a simultaneous analysis method for a target using a plurality of metal nano-tags, wherein the method fuses a nano-particle technology on the basis of an antigen-antibody reaction, which is a conventional biological immune response, and simultaneously diagnoses a plurality of target materials by using a plurality of antigen-antibody reactions and a plurality of metal nano-tags, thereby enhancing diagnostic effect.