96results about How to "Put an end to the possibility" patented technology

The invention discloses a novel coronavirus detection kit. The kit comprises a qRT-PCR reaction liquid, a qRT-PCR enzyme liquid, an internal standard, a negative quality control substance and a positive quality control substance, wherein the internal standard is an RNA pseudovirus containing an internal reference detection gene fragment; the positive quality control substance is an RNA pseudoviruscontaining a target detection gene fragment; and the qRT-PCR reaction liquid comprises four groups of upstream and downstream primers with sequences of SEQ ID NO:1-8 and four probes with sequences ofSEQ ID NO:9-12. The kit can be used to simultaneously detect three sections of target gene fragments, so that missed detection can be effectively avoided. In addition, pseudoviruses are used in boththe internal standard and the positive quality control substance of the kit, so that safety of the kit is effectively improved, and detection accuracy of the kit is further ensured. The kit is high sensitivity and good in stability.

The invention discloses a method for testing the content of benzene and benzene series in a water base adhesive for tobaccos. The method comprises the following steps of: preparing internal standard matrix correction liquid, standard working solution and sample solution; performing static headspace gas chromatography and mass spectrometry analysis; drawing a standard curve, calculating a result and the like. The improved and optimized detection method has the advantages of simplicity and accuracy in operation, high sensitivity, high recycling rate, high repeatability and the like. In the method, fluorobenzene is used as an internal standard for internal standard quantitative detection, so that errors caused by a sample preparation process, different sample injection quantities or different instrument precision and the like can be reduced effectively; and under the adopted chromatographic condition, the separation degree of five target compounds and an internal standard chromatographic peak is high and higher linearity relevance is high; and the detection limit is 0.40 to 0.84mu g/kg, the quantitation limit is 21.32 to 2.79mu g/kg, the marking recovery rate is 95 to 101 percent, and the average relative standard deviation is 0.91 to 2.46 percent.

The invention relates to a multi-functional natural gas and hydrogen mixing gas station and a filling method and aims to provide a multi-functional mixing gas station for hydrogen and natural gas and a filling method to realize real-time and high-precision proportion-adjustable mixing filling of hydrogen and natural gas. A multi-functional high-pressure natural gas and hydrogen gas station system comprises a natural gas supply system, a hydrogen supply system, at least one gas mixing filling machine and a supervisory control and data acquisition (SCADA) system.

The invention discloses a key generation method and system in a switching process. The method includes that a network side uses next hop parameter NH to generate next hop secret key evolved node B (KeNB) in user equipment (UE) switching process; a base station is not informed of the NH generated by the network side; the network side and the UE side respectively use next hop chaining counter (NCC) values informed by a target base station to synchronize with next hop KeNB; and the target base station is informed of the next hop KeNB generated by the network side. The base station can not acquire NH, so that the next hop KeNB can not be generated, the possibility of illegally acquiring next hop KeNB is reduced, and the forward security is guaranteed. By means of the method and the system, the safety of a communication system is greatly improved.

The invention discloses a method for determining volatile organic compounds in polyvinyl acetate type water-based adhesive. The method is applicable to determination of over twenty types of volatile organic compounds simultaneously, and includes steps of respectively preparing matrix calibrating solution, standard working solution and sample solution; analyzing the prepared standard working solution and sample solution by a static headspace gas gas chromatography mass spectrometer; and quantitatively analyzing contents of the volatile organic compounds in the polyvinyl acetate type water-based adhesive. The method has the advantages that detection cost and time are reduced greatly, the gap in the volatile organic compounds in the polyvinyl acetate type water-based adhesive is filled, experimental error caused in the prior art can be overcome well owning to a sample preparation manner, and the improved method is easy to operate, accurate, high in flexibility and recovery rate, good in repeatability and the like.

The invention discloses a belt drive wheel system for engine accessory in BSG system, which comprises a belt, a crankshaft pulley, a starting/generator and a tension pulley. The invention is characterized in that: a tension pulley is also provided; two tension pulleys are positioned at two ends of the starting/generator in dissymmetry. The tension pulley is configured as a mechanical tension pulley. Because the drive wheel system adopts the special layout of two mechanical tension pulleys in dissymmetry, the invention does not only realize the possibility of driving big power motor but also reduce the tension and vibration in the system. Therefore, with feasible tension of belt, reliable working, long service life and low cost, this invention can be best applied for the belt drive wheel system for engine accessory in BSG system.

A composition for chemical soil improvement includes a synthetic fluid or base oil, a pour point depressant, polyisobutylene, and synthetic fibers, and various combinations thereof.

The invention discloses a safe recovery system for converter flue gas waste heat. The safe recovery system comprises a waste heat boiler, a centrifugal force dust removal device, a flue gas uniform flow waste heat recovery device and a fine dust removal device; an inlet of the waste heat boiler communicates with a flue gas outlet of a converter; an outlet of the waste heat boiler communicates with a gas inlet of the centrifugal force dust removal device; a gas outlet of the centrifugal force dust removal device communicates with an inlet of the uniform flow waste heat recovery device; an outlet of the uniform flow waste heat recovery device communicates with an inlet of the fine dust removal device; and a plurality of swirlers are arranged in the waste heat boiler. The invention further discloses a safe recovery method for the converter flue gas waste heat. The system and the method have the beneficial effects that the swirlers break boundary layers of flue gas flows in the waste heat boiler, enhance disturbance and mixing of the gas flows and promote rapid mixing of CO in flue gas and O2 in the air sucked by a furnace opening so that the CO in the flue gas can be subjected to complete combustion reaction above the spontaneous ignition point of the CO, mixed gas discharged out from the waste heat boiler is outside the explosion limit range, and therefore the possibility of explosion of the flue gas in the subsequent treatment process can be greatly reduced.

The present invention relates to the technical field of building materials, particularly to a polymerization polystyrene plate and a preparation method thereof. According to the polymerization polystyrene plate, 20-50 kg of an inorganic fireproof material and 0.4-5 kg of a curing agent are injected into an expanded polystyrene plate with a unit volume of one cubic meter. The preparation method comprises: 1, uniformly stirring an inorganic fireproof material and a curing agent in the claim 1 at a speed of 800-1000 r/min so as to be adopted as a mixture; 2, injecting the mixture into an expanded polystyrene plate; and 3, conveying the expanded polystyrene plate injected with the mixture into a laminating machine to mold, wherein the molding temperature is 35-70 DEG C, and the time is 4-15 min. According to the present invention, when contacting fire, the polymerization polystyrene plate does not shrink, does not produce droplets, does not burn, does not produce smoke and is not be penetrated by flames; and the polymerization polystyrene plate further has characteristics of good thermal insulation property, low thermal conductivity and no influence on thermal insulation effect after long term use, and can be provided for reducing even eliminating occurrence of fire disasters similar to the Shanghai 2010 11.15 disastrous fire from the source head so as to protect life and property safety of the majority of the public.

The invention relates to the technical field of information, in particular to an insurance claim settlement system based on a block chain, which comprises an archive subsystem and a claim settlement service subsystem, and is characterized in that the claim settlement service subsystem comprises an acceptance subsystem, an association subsystem and a claim settlement subsystem; an archive subsystem collects business archives of a service subject, extracts evidence storage hash values of the business archives and extracts hash values of identifiers of a served subject, if a consistent identification code exists, the business archives are encrypted and then uploaded to a block chain, and an association subsystem polls the block chain and decrypts to obtain all the business archives, and after a preset duration, the association subsystem sends the business archives to the service subject. And the claim settlement subsystem obtains the total amount of claim settlement of the insurance subject according to all the business archives associated with the claim settlement task, and completes the claim settlement task. The method has the substantive effects that the authenticity of the business archive is ensured, and the safety of the business archive is favorably improved.