24results about How to "Reduce dilution" patented technology

The invention provides a method for traffic flow prediction through a course learning guided space-time network, and the method comprises the steps: employing a space-time network model, introducing a course learning module to evaluate the prediction difficulty of nodes in a traffic network, employing a training scheduler to gradually introduce training nodes from easy to difficult for the space-time network model, so as to improve the prediction capability; and then, a global space-time encoder with multiple space-time attention mechanisms is adopted, and the problem that original semantic information is diluted in a layer-by-layer transmission process is relieved through an interlayer residual scaling technology, so that global space-time correlation of nodes is captured, and traffic flow prediction is realized.

The invention discloses a purity detection device for isomaltitol production, and relates to the technical field of isomaltitol production and detection. A sliding groove is formed in the left end of the workbench, a conveying table is arranged at the left end of the workbench, two electric sliding rails are symmetrically arranged at the top of the workbench, a spectrophotometer is arranged on the right side of the top of the workbench, a supporting assembly is arranged at the top of the workbench, a solution box is arranged in the supporting assembly, and a telescopic pipe is arranged at the bottom of the solution box. A sample and a solution are uniformly and quickly mixed by the measuring cup through up-down movement in the inspection process, and the mixing uniformity of the sample and the solution is further improved through vibration force, so that the situation that the dilution effect of the solution on isomaltitol in the measuring cup is reduced due to the fact that the solution is blocked by the isomaltitol and is difficult to quickly go deep into the bottom of the measuring cup is avoided; and data errors are prevented when the isomaltitol is detected through a spectrophotometer.

The present application belongs to the technical field of traditional Chinese medicine composition, and relates to a traditional Chinese medicine transdermal external preparation for treating vulvar hypopigmentation disease. The preparation is a paste prepared by mixing traditional Chinese medicine powder and horse oil. The traditional Chinese medicine powder is composed of the following raw materials by weight: Xuchangqing 10-12, Pugongying 10-15, Difusiduo 12-15, Tuzifuding 12-15, Baiji 10-15, Huzhang 9-12, Quansie 6-10, Diyu 10-12, Xuezhi 10-12, Danggui 6-10, Rushang 6-10, Miedu 6-10, Bingpian 1-3. The traditional Chinese medicine transdermal external preparation has definite and significant effects on vulvar hypopigmentation disease, especially in relieving intractable pruritus, promoting pigment recovery and improving skin sclerosis / atrophy. The traditional Chinese medicine transdermal external preparation has high safety, few adverse reactions and low recurrence rate.

The utility model belongs to the field of flue gas denitration, especially is involved in a kind of denitration system for adding pure ammonia gas to high nitrogen oxide concentration flue gas. In order to realize emission reduction, the utility model provides a kind of denitration system for adding pure ammonia gas to high nitrogen oxide concentration flue gas, the denitration system includes flue, denitration reactor, flue gas on-line monitor, pure ammonia gas adding system for adding pure ammonia gas to flue and automatic control system;Pure ammonia gas adding system includes the ammonia supply line for conveying pure ammonia gas, flow regulating valve and ammonia gas flowmeter are equipped on ammonia supply line, the downstream end of ammonia supply line is equipped with pure ammonia nozzle located in flue and located in the downstream of flue gas on-line monitor;Automatic control system is used to control the opening of flow regulating valve according to the flow and nitrogen oxide concentration of original flue gas. Directly add pure ammonia gas to original flue gas, and dilute pure ammonia gas using original flue gas, thereby saving the energy consumed by dilution fan and reducing the amount of flue gas finally discharged.

A robotic monitoring, detection and fire extinction control system comprises a pumping station, a fire main and at least two robotized fire extinguishing units connected to the fire main comprising a fire monitor with drives for vertical and horizontal aiming and a head with a drive for adjusting the spray angle of the jet. Mounted at an inlet upstream of the fire monitor is a butterfly valve with a drive, and mounted at the outlet of the fire monitor, upstream of the head, are a pressure sensor and a portable control console that are connected to a switching unit at the inlet and, via a network controller, to a control device at the outlet. Mounted on the fire monitor is a fire detection and video surveillance device that is connected to a signal processing device that is connected to a video monitor device and to a process control system that are connected to a control device that is connected via a receiving and control device to fire alarms. A foam generating unit is connected to the robotized fire extinguishing units by a foam conduit; additional reserve pipes, connected to the robotized fire extinguishing units, are provided for supplying water and compressed air foam; and an additional controllable butterfly valve, mounted on the foam conduit, is provided and has a drive connected to the switching unit. The head is designed to be capable of supplying water and compressed air foam at a controlled concentration and rate.

The utility model discloses a kind of thick bottom plate dewatering well well packer, it is related to dewatering well well packer construction technical field, including circular steel sealing plate, the bottom surface of the circular steel sealing plate is fixedly connected with steel pipe, the bottom surface edge of the circular steel sealing plate is fixedly connected with flexible pad, the bottom surface of the circular steel sealing plate is fixedly connected with straight thread reinforcement, straight thread reinforcement is arranged on the outside of steel pipe, the top surface of the circular steel sealing plate is fixedly connected with steel baffle, the utility model is installed to the bottom suitable position of pre-buried steel sleeve by using when front sealing device and additional water retaining device, circular steel sealing plate and water retaining device one end are lower, straight thread reinforcement one end is upper and pre-buried steel sleeve is welded and fixed, temporary bottom sealing is formed before concrete pouring, so that subsequent concrete strength, compactness is effectively guaranteed, subsequent construction is steadily carried out.

The invention relates to the technical field of medical instruments, and discloses a disposable infusion apparatus with a dosing kettle, which comprises a bottle stopper puncture outfit, a drip chamber, a pipeline, an air filter, a flow regulator, a straight-through tube and a liquid medicine filter. Compared with the prior art, the disposable infusion apparatus with the medicine adding kettle has the advantages that the straight-through pipe is arranged, the medicine adding kettle is installed in the middle of the outer wall of the straight-through pipe, the safety cap is installed on one side of the middle of the medicine adding kettle and can be in butt joint with the top end of the medicine adding kettle, and therefore when the disposable infusion apparatus with the medicine adding kettle is used, the safety cap is taken down from the top end of the medicine adding kettle; the end portion of the syringe without the needle head is inserted into the medicine adding pot, the aim of filling medicine into the straight-through pipe is conveniently achieved, after filling is completed, the safety cap is covered again, sterility is guaranteed, using is safer, more accurate, rapider and more convenient, by arranging the straight-through pipe and the medicine adding pot, the anti-backflow effect can be achieved, and the anti-backflow effect is achieved. Therefore, medical staff can conveniently fill liquid medicine through the medicine adding pot.

A method for preparing a light olefin by dehydrogenation can include operating a catalytic dehydrogenation process; monitoring the composition of the combustion gases in the combustor to detect the concentration of one or more hydrocarbons; and selectively adding a combustion additive with the catalyst when the combustion gas contains one or more hydrocarbons in an amount greater than 5% of a lower combustible limit level of the combustion gas at the temperature and pressure of the combustor. The injection cup wear index of the combustion additive may be greater than the injection cup wear index of the catalyst. The combustion additive may include 1% to 10% by weight of one or more transition metals other than gallium and noble metals; from 0 parts by weight of millions (ppmw) to 100 ppmw of gallium and a noble metal; and at least 85% by weight of a carrier.

The present invention provides a method for extracting nucleic acid based on a magnetic bead method, comprising the following steps: step one, surface modification of magnetic beads; step two, preparation of magnetic bead suspension; step three, sample lysis and incubation; step four, magnetic adsorption; step five, washing and removing impurities from magnetic beads. The present invention obtains phospholipid bilayer magnetic beads by surface modification of magnetic beads, which can reduce the interfacial tension between nucleic acid and magnetic beads, making it easier for nucleic acid to contact and bind with the surface of magnetic beads. The present invention uses a lysis solution of specific components and combines with ultraviolet light irradiation during sample lysis and incubation. By modifying the surface of magnetic beads and using a specific lysis solution for lysis and incubation, the magnetic beads of the present invention have a high degree of specific binding to nucleic acids, and only one washing is required, eliminating the elution step, and the obtained magnetic bead-nucleic acid complex can be directly used as a subsequent nucleic acid detection target, reducing the loss and dilution of nucleic acid caused during multiple washing and elution processes, and improving the concentration and purity of nucleic acids.

The invention discloses a water plant raw water sniffing detection method and system based on an electronic sense organ, and relates to the technical field of smell test.The method comprises the steps that sampling sniffing liquid extraction treatment is conducted on a water source water sample, and then separation treatment is conducted on two kinds of sniffing liquid of three kinds of preset separation membranes; performing olfactory liquid characteristic parameter analysis on the obtained first and second types of olfactory liquids, the first and second types of olfactory liquids and the first and second types of olfactory liquids, respectively performing separation treatment on the two types of olfactory liquids according to three preset vibration signals, and performing olfactory liquid characteristic parameter analysis on the obtained first and second types of olfactory liquids, the first and second types of olfactory liquids and the first and second types of olfactory liquids; and according to the obtained odor intensities of the first and second to-be-judged olfactory liquids, carrying out comprehensive grade judgment on the pretreated olfactory liquids, and outputting an early warning judgment result or a standard judgment result. According to the water plant raw water sniffing detection method and system based on the electronic sense organ, the accuracy of the water plant raw water sniffing detection result can be improved.

A dust and nitrate integrated flue gas ultralow emission device for a biomass fluidized bed boiler power plant comprises a biomass fluidized bed boiler, a coal economizer, a cyclone dust collector, a CFB dry deacidification tower, a denitration and dust removal integrated device, an induced draft fan and a chimney which are sequentially connected. The ammonia spraying device is arranged on the upper portion of the biomass fluidized bed boiler, one end of the main flue gas pipeline is connected with the economizer, the other end of the main flue gas pipeline is connected with the cyclone dust collector, one end of the high-temperature flue gas branch pipe is connected with the biomass fluidized bed boiler, and the other end of the high-temperature flue gas branch pipe is connected with the slaked lime adding device. The other end of the main flue gas pipeline is connected to the downstream of the main flue gas pipeline, the slaked lime feeding device is communicated with the venturi throat part of the CFB dry-process deacidification tower, and the baking soda grinding device is connected with the joint of the CFB dry-process deacidification tower and the denitration and dust removal integrated device through a pipeline. The flue gas filtering device can ensure that flue gas meets the ultra-low emission requirement and reaches the emission standard, the boiler efficiency can be improved, and the long-period operation time can be prolonged.

This invention relates to the field of sediment remediation, and more particularly to a device for treating river and lake sediment. Existing devices are inconvenient for judging the thickness of river and lake sediment during use, making it difficult to inject liquid bacteria into sediment of varying thicknesses, resulting in uneven distribution of the liquid bacteria. This invention includes a hull, with a mounting base fixedly connected to the bottom of the hull. A feed hopper is fixedly connected to the mounting base, and a hollow tube is rotatably connected to the lower part of the feed hopper. This invention uses a disc positioned on top of the river and lake sediment, allowing a guide pipe, threaded rod, and agitator to enter the sediment. An appropriate amount of liquid bacteria is then added to the feed hopper. This allows for the injection of liquid bacteria into sediment of varying thicknesses while minimizing dilution by the water, thus improving the treatment effect of river and lake sediment.

The utility model provides a chromatographic column and ionization source interface for GC-IMS (gas chromatography-ion mobility spectrometry) coupling technique, which comprises a chromatographic column, an ion migration tube and a GC-IMS interface for connecting the chromatographic column and the ion migration tube, one end of the GC-IMS interface is a screw sleeved on the chromatographic column, and the other end of the GC-IMS interface is a nut fixed on the ion migration tube; the ion migration tube comprises an ionization source, a reaction area, an ion gate, a migration area and a migration tube air outlet, and the migration tube air outlet is located on the side face of the first electrode of the ion migration tube; the chromatographic column is horizontally sealed and fixed on the axis of the ion migration tube, is axially connected with the ion migration tube through a GC-IMS interface and penetrates through the ionization source, a gas outlet of the chromatographic column is positioned in the reaction region and is positioned between the ionization source and the ion gate, and eluate of the chromatographic column enters the reaction region under the driving of carrier gas for ionization analysis. And meanwhile, the eluate is quickly blown out of the ion migration tube under the action of one-way drift gas. According to the technical scheme of the utility model, the problems of GC-IMS flow matching and sample residue are solved, and the GC-IMS response time resolution is improved.

This invention relates to the field of gas detection technology and discloses an intelligent gas concentration detection device, including a detection box with a gas chamber inside. The gas to be tested is delivered into the gas chamber, and a detection mechanism is installed inside the gas chamber. An adjustment mechanism is also installed inside the gas chamber to isolate and expel air from the gas chamber before the gas to be tested is introduced. By setting up the adjustment mechanism, this invention isolates and expels air at the detection position inside the gas chamber before the gas to be tested enters for detection, thus reducing the dilution of the gas to be tested by air during the detection process.

The invention relates to the technical field of automobile aftertreatment, in particular to a DPF regeneration method and device, a vehicle, a medium and a program product. The method comprises the steps that after it is determined that a diesel particulate filter (DPF) regeneration stage is entered, the total amount of current residual diesel oil on the inner wall of an air cylinder is obtained; determining the dilution degree of engine oil in a vehicle oil pan based on the total amount of the current residual diesel oil on the inner wall of the air cylinder; and if the dilution degree of the engine oil exceeds the first dilution degree, the amount of diesel oil sprayed out in the current remote after-injection process is reduced to a preset value from a reference value, so that the DPF is regenerated according to the preset temperature. Through the method, engine oil dilution can be slowed down, and then normal operation of the engine is guaranteed.

The preparation method comprises the following steps that S1, a base pipe is polished, oxide skin on the surface of the base pipe is removed, the surface of the base pipe is cleaned with absolute ethyl alcohol to remove stains, and the base pipe is dried with cold air; and S2, circulating cooling water is conveyed into the base tube, and meanwhile, under the action of a heat source laser beam, Ni-based alloy powder is cladded to the surface of the base tube. According to the composite pipe prepared through the method, the high-temperature molten salt corrosion resistance is effectively improved and is about 5 times that of a base pipe, the service life of a furnace pipe is prolonged, the operation rate of a generator set is increased, and the power generation cost of a waste incineration power plant is greatly reduced.

The utility model relates to a device for producing ammonium bicarbonate from high-concentration CO2, which comprises a main carbonization tower, a standby carbonization tower, a fixed auxiliary tower, a recovery tower, a buffer tank, a synthetic ammonia gas holder and a compressor, a gas inlet of the main carbonization tower is provided with a raw material pipeline, the main carbonization tower is connected with the standby carbonization tower through a pipeline, the standby carbonization tower is connected with the fixed auxiliary tower through a pipeline, and the recovery tower is connected with the fixed auxiliary tower through a pipeline. The fixed auxiliary tower is connected with the recovery tower through a pipeline, the recovery tower is connected with the buffer tank through a pipeline, the buffer tank is connected with the synthetic ammonia gas holder and the compressor through pipelines, and a gas outlet of the compressor is provided with a circulating pipeline communicated with a raw material pipeline. The buffer tank, the synthetic ammonia gas cabinet and the compressor are arranged between the recovery tower and the main carbonization tower, and the circulating pipeline is connected with the raw material pipeline, so that the dilution of high-concentration CO2 can be realized by effectively utilizing related gas generated in the reaction process, the product quality of ammonium bicarbonate is better, the recycling of the gas is realized, and the production cost is reduced. The feed gas consumption is reduced.

The present invention provides a production system and process for unsaturated hydrocarbons, the system comprising: a combustion heat storage area, a cracking reaction area, a primary distillation area, a carbon dioxide recovery area, a deacidification area, a C2 / C3 fractionation area, a C2 hydrogenation area, a deep cooling area, and a cold separation area; wherein the cracking reaction area comprises a conical reactor body and a quenching heat exchanger connected to the lower end of the conical reactor body. The present invention shortens the reaction residence time, increases the temperature and pressure of the cracking reaction, and reduces the compression energy consumption and heat exchange energy consumption required for subsequent separation by making the cracking raw material directly contact with the high-temperature flue gas and using a conical reactor.

This invention relates to a method for image classification and recognition of dragon fruit stem and leaf diseases based on an improved MSF-Net, belonging to the field of agricultural disease image recognition technology. Addressing the problems of existing methods' low discrimination between minor and similar diseases of dragon fruit stems and leaves, and the lack of specific adaptation for multi-scale feature fusion, this invention inputs stem and leaf images into an improved MSF-Net model, which includes parallel first and second feature extraction channels. The first feature extraction channel is composed of multiple cascaded multi-scale convolutional modules, containing convolutional branches of different sizes connected to CReLU activation layers. The second feature extraction channel is composed of multiple cascaded dilated multi-scale convolutional modules, containing convolutional branches with different dilation rates connected to CReLU activation layers. The output features of the two channels are concatenated along the channel dimensions to obtain a multi-scale fused feature map, which is then global average pooled and fed into a fully connected classification layer to output the disease category. This invention can enhance the ability to capture subtle lesions and differences in disease stages, and can be used for real-time disease identification and control in dragon fruit plantations.

The application discloses a nitric acid preparation system and method, and relates to the technical field of chemical industry, and can reduce tail gas emission and nitrogen oxide content in the tail gas during nitric acid preparation.

The present invention provides a conical cracking reactor, a hydrocarbon cracking method and a reaction system, wherein the conical cracking reactor comprises a conical reactor body and a quench heat exchanger connected to the lower end of the conical reactor body, the top of the conical reactor body is provided with at least one cracking raw material inlet, and the side wall of the conical reactor body is provided with at least one high-temperature flue gas inlet. The conical cracking reactor of the present invention greatly reduces the reaction residence time and prevents the problem of easy coking under high-pressure conditions. In addition, the present invention directly mixes the high-temperature flue gas generated in the combustion chamber with the raw material for heat exchange and generates a cracking reaction, which can increase the cracking reaction temperature and thus improve the cracking reaction depth, while making maximum use of the heat energy of fuel combustion.

The invention discloses an emulsion type crosslinking system, a profile control system and a preparation method, and belongs to the technical field of oil gas. The emulsion type cross-linking system comprises a phenolic emulsion, a hexamethylenetetramine emulsion and an ammonium chloride emulsion. The three are water-in-oil type emulsions, the phenolic emulsion comprises a first oil phase and a first water phase, and the first water phase comprises resorcinol and / or hydroquinone; the hexamethylenetetramine emulsion comprises a second oil phase and a second water phase, and the second water phase comprises hexamethylenetetramine; the ammonium chloride emulsion includes a third oil phase and a third aqueous phase, the third aqueous phase including ammonium chloride. The emulsion type cross-linking system is suitable for high-temperature oil reservoirs, and can still achieve a good plugging effect at a high temperature.

The invention discloses a superheated steam device and a steam heater, the superheated steam device comprises a steam generating part, a heating part and a steam outlet part, the heating part comprises a snakelike pipeline and a heating piece, the heating piece is clamped in a gap of the snakelike pipeline, the heating piece is tightly attached to the outer side wall of the snakelike pipeline, and the steam outlet part is arranged on the snakelike pipeline. The first end of the snakelike pipeline is connected with the steam generating piece, and the second end of the snakelike pipeline is connected with a steam outlet piece. The steam can be heated for the second time, so that the water content of the steam is reduced so as to reduce dilution of drinks, and the temperature of the steam is increased so as to improve the making efficiency of the drinks.

The application discloses a preparation method of MICP combined with molasses reinforced calcareous sand. The preparation method comprises the following steps: activating and culturing mineralization bacteria, preparing a molasses culture medium by using waste molasses, inoculating the activated mineralization bacteria liquid on the molasses culture medium, and after the OD600 value of the mineralization bacteria in the molasses culture medium is between 1.0 and 1.5, injecting the molasses culture medium containing the mineralization bacteria into the calcareous sand for reinforcement, so that the reinforced calcareous sand is obtained. The preparation method of the MICP combined with molasses reinforced calcareous sand disclosed by the application directly uses waste molasses as a carbon source to culture mineralization bacteria, greatly reduces the preparation cost, and is green and environment-friendly in the preparation process; by adding sugarcane residue with a proper proportion and length in the waste molasses, the viscous sugar silk and the sugarcane residue are uniformly distributed in the reinforced calcareous sand, so that the generation amount of the microbial-induced calcium carbonate crystal is improved, and the prepared calcareous sand has more excellent reinforcement effect, and the unconfined compressive strength can reach 2 MPa at most.