53results about How to "Reduce potential threats" patented technology

The invention discloses crack-resistant anti-radiation mass concrete based on waste glass. The mass concrete comprises the following components: 140-160kg/m<3> of water, 100-300kg/m<3> of cement, 30-100kg/m<3> of a glass powder, 50-180kg/m<3> of fly ash, 800-1100kg/m<3> of fine aggregates, 1400-2000kg/m<3> of coarse aggregates, 0.35-1.9 kg/m<3> of a composite modifier, 2.1-7.8kg/m<3> of a water reducing agent and 0.6-1.2kg/m<3> of fibers, wherein the coarse aggregate is prepared by mixing barite and lead glass; the fine aggregate is prepared by mixing borosilicate glass sand and barite sand. The prepared crack-resistant anti-radiation mass concrete is excellent in working performance, mechanical property, cracking resistance, durability and shielding effects; moreover, the waste glass containing lead, boron and the like can be efficiently recycled, and the crack-resistant anti-radiation mass concrete has obvious economic and environmental benefits.

The invention relates to an anti-microbial synthetic leather and a preparation method thereof. The anti-microbial synthetic leather is prepared from the following components by weight: 35 to 50 parts of thermoplastic polyurethane, 20 to 35 parts of diisocyanate, 15 to 25 parts of melamine copolymer resin, 7 to 9 parts of a nanometer titanium oxide-Ag anti-microbial agent, 3 to 5 parts of an auxiliary agent, 4 to 8 parts of honey and 1 to 3 parts of elm powder. The synthetic leather has wear resistance, moisture permeability and air permeability, reduces potential threat to the environment and the human body, can improve smoothness and cold-thermal fatigue performance, and has enhanced air permeability and moisture permeability, actual leather feel, wear resistance and service life.

The invention relates to the field of fungi molecular biology, in particular to an instrument-free yeast-like fungus DNA extraction method used for nucleic acid amplification. According to the method, two yeast wall breaking methods, namely, the chemical lysis method and the enzymatic lysis method, are ingeniously integrated, DNA extraction is completed within 1.5-3 hours through the combination with a suction device, a filter device and a nucleic acid extraction syringe without power supply devices, and the method is the only efficient instrument-free yeast-like fungus DNA extraction method at present. The extraction method has the advantages of being rapid, simple, convenient to use, sensitive, free of toxin, low in cost and the like, and can be suitable for most yeast-like fungi.

The invention discloses a method for removing high concentration phosphorus in glyphosate wastewater. The method comprises the following steps: adding a reducing agent to the glyphosate wastewater firstly, then adding hydrolytic enzyme and coenzyme to convert organic phosphorus into inorganic phosphorus; then using alkali to adjust PH and adding inorganic polymer flocculant for flocculating settling; adding sodium hypochlorite, polyethylene succinic acid and glycerol to the settled wastewater, injecting the wastewater into a high pressure vessel and drumming air into the vessel to maintain the total pressure in the range of 5.0-6.0MPa; finally, open a container channel to release the wastewater into a pond to form white mist foam. A layer of greasy substance generated in the upper part of the pond can be removed by a slag adhering machine. The method provided by the invention does not have to convert organic phosphorus into inorganic phosphorus through the hydrolysis of hydrolytic enzyme and coenzyme at the high pressure and high temperature condition, the inorganic polymer flocculant added has selectivity. The method provided by the invention can reduce the concentration of phosphorus in glyphosate wastewater to 0.5mg/L or less. And the removal efficiency of phosphorus can reach more than 99.9%.

The invention belongs to the field of synthesis of cubic boron nitride and in particular relates to a method for purifying and synthesizing hexagonal boron nitride in synthetic cubic boron nitride tailings. The method for purifying and synthesizing the hexagonal boron nitride in the synthetic cubic boron nitride tailings is characterized by being realized through the following steps: carrying out ball milling and thinningrefining; shaking to remove one part of impurities; drying at low temperature; conveying materials into a furnace body of continuous tunnel type microwave drying equipment; meanwhile, introducing mixed gas of oxygen and air into the furnace body, so as to remove carbon impurities; removing the residual impurities through diluted acid; adding the materials, the diluted acid and pure water into a reaction kettle and stirring and heating; after sufficiently reacting, obtaining materials without the impurities; washing with the pure water; neutralizing and washing with the pure water to obtain the pure hexagonal boron nitride. According to the method provided by the invention, a solid waste material, namely the hexagonal boron nitride, is purified to obtain a useful material through physical and chemical methods, so that the utilization of the raw material is greatly improved, and potential threats, caused by the solid waste material, on to the environment are also reduced.

The invention discloses a ratproof and termiteproof material, which comprises the following components in percentage by weight: 80 to 85 percent of polypropylene, 8 to 20 percent of glass fiber, 0.6 to 2 percent of capsaicine, 0.8 to 2 percent of dihydrocapsaicine and 1 to 2.5 percent of cypermethrin. Because the capsaicine, the dihydrocapsaicine and the cypermethrin can generate strong odor irritating both olfactory sensation and taste sensation of mice and insects, the ratproof and termiteproof material can effectively prevent the bite and encroachment of mice and termites and is particularly suitable to manufacture civil engineering members used outdoors for a long period of time such as filling sacks and fixing buckles used in barrier building; a built barrier has less potential threat and high safety factor and passes experimental verification; and the mechanical property of the ratproof and termiteproof material is identical to that of ordinary polypropylene materials and does not influence the quality of products manufactured by the material.

The invention relates to an IGBT module structure reliability testing device having a video monitoring function. The IGBT module structure reliability testing device comprises a power supply module, a telescopic module, an intelligent control module, a sliding module, a rotating module, and an acquisition module. The power supply module is connected with other modules to provide electric energy. The intelligent control module is connected with the telescopic module, the sliding module, the rotating module, and the acquisition module to realize a test control function. The IGBT module structure reliability testing device is advantageous in that the design is reasonable; the constant changing of the internal chip, the solder layer, and the copper layer of the IGBT module during a testing process is acquired by adopting a visual sensor; the corresponding changing of the corresponding parts is determined, and the gradual changing of the internal structure of the IGBT is discovered, and after the IGBT loses efficacy, the part causing the failure of the IGBT is determined.

The invention discloses a composition containing MCPA-Na and a cyclohexenone herbicide. The composition contains the effective ingredients of MCPA-Na and the cyclohexenone herbicide, wherein the mass ratio of MCPA-Na to the cyclohexenone herbicide is (1-10): (10:1); the preferential mass ratio of MCPA-Na to the cyclohexenone herbicide is (1-6): (6:1); the most preferential mass ratio of MCPA-Na to the cyclohexenone herbicide is (1-6): 1. The composition can adopt any one preparation formulation accepted by pesticides, and has a very good synergistic effect within a certain proportion range; compared with that of a single herbicide, the weeding effect of the composition is remarkably improved; meanwhile, the herbicide consumption and the cost are reduced, herbicide residues are reduced, and the potential threats of the pesticides to the environment are relieved.

The invention discloses a lifting appliance special for a bridge type crane. The lifting appliance comprises a bridge and an overhead part. The bridge comprises a main beam and an auxiliary beam whichare each of a box-type structure, traction devices are arranged on the upper surfaces of the main beam and the auxiliary beam correspondingly and comprise tracks and rolls, and the tracks are weldedto the upper surfaces of the main beam and the auxiliary beam. Sliding blocks are arranged above the tracks and can move along the tracks transversely. The rolls are arranged at the upper ends of thesliding blocks, the centers of the rolls are provided with rotary shafts, and one ends of the rotary shafts are connected with motors through belts. Grooves are formed in the outer surfaces of the rolls, the interiors of the grooves are wound with steel wire ropes, and one ends of the steel wire ropes extend to the lower end of the bridge. A plurality of branches are arranged at the lower ends ofthe steel wire ropes, the top ends of the branches and the steel wire ropes are hinged together, and the bottom ends of the branches are provided with hanging rings. The hanging rings are connected with hangers through screws. The structure is simple, operation is easy and convenient, the function of material hanging can be achieved, the problems put forward by the background technology can be effectively solved, and the lifting appliance is worth popularizing.

The invention discloses a coal mine monitoring system safety early warning method based on an LM neural network. The method comprises the following steps of acquiring a monitoring system data set by deploying a script set; establishing a logic mapping file of the distributed database and the monitoring system data set; normalizing the logic mapping file to form a sample library; establishing a trend analysis model based on LM neural network deep learning according to the sample library; acquiring monitoring system data in real time, transferring the monitoring system data into a logic mappingfile, inputting the logic mapping file into an LM neural network for analysis, and comparing the logic mapping file with the trend analysis model; judging whether abnormity occurs or not according toa comparison result, and if abnormity occurs, giving an alarm prompt.According to the invention, a safety early warning function can be realized for the monitoring system, potential threats caused byhuman participation are reduced, early sensing of network data situation changes of the monitoring system is realized, the safety early warning capability is improved, and the operation and maintenance cost of the protection system is reduced.

The invention relates to an on-line monitoring control system and method for external environment of a civil air defense door. The on-line monitoring control system and method are used for an electriccivil air defense door. The system comprises a sensor module, a processor, an upper computer and a driving module, wherein the sensor module is used for acquiring environmental information outside the civil air defense door; the processor is used for acquiring the civil air defense door outside environmental information collected by the sensor module, processing the environmental information intoto-be-compared information and transmitting the information to the upper computer; the upper computer is used for acquiring the to-be-compared information and comparing the to-be-compared informationwith a preset value; the driving module is used for driving an actuator of the electric civil air defense door to further control opening and closing of the electric civil air defense door; the uppercomputer sends a door opening instruction to the processor when judging that the to-be-compared information is lower than the preset value, and the processor controls the driving module to drive theactuator of the civil air defense door to act to open the civil air defense door. The environmental safety situation outside the door can be known accurately in real time, and the civil air defense door is opened automatically after environmental safety is confirmed, so that potential threat is reduced, and safety is improved.