60results about How to "Achieve transformation" patented technology

The invention relates to a preparation method of CAR-T cells and a product thereof. A method for preparing a CAR-T cell according to the present invention comprises the step of introducing a cyclic mRNA into a T cell that does not contain a chimeric antigen receptor; and, the cyclic mRNA comprises a first cyclic mRNA encoding a chimeric antigen receptor; in addition, the first annular mRNA comprises the following sequence (a) or (b): (a) a translation starting sequence and a coding sequence; and (b) translating the starting sequence, the coding sequence and the insertion element sequence. In the method, the transfection efficiency of the annular mRNA is high, and the positive rate is as high as 90%; compared with preparation methods of viruses, transposon systems and the like, the process is simple, the production cost is greatly reduced, and the safety is also improved; compared with linear mRNA, the protein expression time is greatly prolonged.

The invention belongs to the technical field of preparation of novel electrocatalysts, and particularly relates to preparation and application of an angstrom confinement electrocatalyst for selectively activating molecular oxygen to produce hydroxyl radicals. The preparation method comprises the following steps: taking 2H-phase MoS2 as a precursor, loading metal single atoms on the surface of the precursor, and intercalating alkali metal cations; the angstrom confinement catalyst is 1T-phase MoS2 loaded with metal single atoms. The angstrom confinement catalyst provided by the invention is high in three-electron selectivity, can remarkably expose catalytic active sites, accelerates mass transfer of reactants, generates active oxygen species in a penetrating reactor, realizes high hydroxyl radical generation rate and utilization efficiency in an angstrom channel, is simple in preparation method, and has good electrochemical stability. The method lays a foundation for Angstrom confinement catalysis, and reflects the importance of the Angstrom confinement strategy in the design of a high-efficiency catalyst for water pollution control.

The invention discloses a preparation method of a CuAlO2-phase-based alumina-based conductive ceramic, and belongs to the technical field of preparation of nano conductive ceramics. The invention relates to a method for converting aluminum oxide ceramic into a novel electric heating element from an insulator by adding a semiconductor component CuAlO2 phase in the aluminum oxide ceramic and continuously distributing the CuAlO2 phase along an aluminum oxide crystal boundary through a process to form a conductive path, which comprises the following steps of: mixing CuO, SiO2, Al2O3 and the like according to a certain proportion, and carrying out ball milling; and the novel aluminum oxide electric heating body is formed after tabletting and sintering. According to the method, the sintering temperature of the aluminum oxide ceramic can be greatly reduced, and complicated processes and equipment are not needed, so that the novel aluminum oxide conductive heating ceramic is low in energy consumption, simple in process, low in equipment requirement and excellent in product performance, and the price of a novel heating body is expected to be greatly reduced.

The invention relates to a TCR-T cell preparation method and a TCR-T cell product. The preparation method of the TCR-T cell provided by the invention comprises a step of introducing annular mRNA (messenger Ribonucleic Acid) into a T cell modified by a non-T cell receptor gene; and, the cyclic mRNA comprises a first cyclic mRNA encoding a T cell receptor; in addition, the first annular mRNA comprises the following sequence (a) or (b): (a) a translation starting sequence and a coding sequence; and (b) translating the starting sequence, the coding sequence and the insertion element sequence. In the method, the transfection efficiency of the annular mRNA is high; compared with a virus system and the like, the process is extremely simple, and the production cost and the detection cost are greatly reduced; compared with linear mRNA, the protein expression time is greatly prolonged; compared with a virus system, a transposon system and a CRISPR system, the safety risk is greatly reduced.

The invention provides a self-adaptive water temperature control curtain layered water taking device suitable for a reservoir water taking tower. The self-adaptive water temperature control curtain layered water taking device comprises a water temperature control curtain structure and a self-adaptive adjusting structure. The water temperature control curtain structure comprises a water temperature control curtain, a height adjusting ring, a support with a hanging ring, a supporting rod fixed to the water intake tower and a connecting rod connected with the height adjusting ring. The structure is simple, an existing building can be transformed, a constructed reservoir without layered water taking facilities can be well reconstructed, the structure of the reservoir is not damaged, and compared with traditional layered water taking measures such as a stoplog gate, the layered water taking device has the obvious advantages of being convenient to arrange, low in manufacturing cost, easy to operate, small in head loss and the like; compared with an existing water temperature control curtain layered water taking type, the water temperature control curtain has the obvious advantages of being small in engineering amount, low in manufacturing cost, capable of automatically adjusting the height of the curtain, almost zero in operation cost, energy-saving, environment-friendly, small in curtain deformation and the like.

The invention provides a lithium-aluminum alloy negative electrode and a preparation method and application thereof, and the preparation method comprises the following steps: in a protective gas, an aluminum foil, a lithium sheet, a diaphragm and an electrolyte are adopted to prepare a battery cell, the aluminum foil is a positive electrode, and the lithium sheet is a negative electrode; the method comprises the following steps: preparing an aluminum foil on the surface of a battery cell, then discharging the battery cell with the discharging voltage range of 0.03-0.4 V to generate a beta-LiAl alloy layer on the surface of at least one side of the aluminum foil, disassembling the battery cell after discharging is finished, and taking the disassembled aluminum foil loaded with the beta-LiAl alloy layer on the surface as the lithium-aluminum alloy negative electrode. According to the preparation method disclosed by the invention, the lithium-aluminum alloy with a fixed crystal form is formed on the surface of the aluminum foil in advance, and the conversion of the beta-LiAl alloy between a lithium-rich state and a lithium-poor state is realized by regulating and controlling the voltage range in the charging and discharging process, and the conversion between phases is not involved, so that the cycling stability of the battery is improved, and the service life of the battery is prolonged. The problem that the volume change of the lithium-aluminum alloy in the charging and discharging process is large is solved.

The invention provides a preparation method of porous graphene, and belongs to the technical field of graphene preparation. The preparation method comprises the following steps: dispersing graphite powder in a solution, carrying out high-speed turbulence treatment on a graphite dispersion liquid, and carrying out centrifugal treatment on the treated dispersion liquid to obtain the porous graphene. According to the invention, turbulent flow and cavitation effects are formed in the high-speed turbulent flow treatment process, and the stripping of the graphite sheet layer is realized by using inertia force, viscous shearing force and Reynolds shearing force generated by the turbulent flow; and high-pressure micro-jet is generated at the collapse moment of the cavitation bubbles and continuously impacts the graphene to form holes. In the preparation process, related flow fields are all full turbulent flow fields, turbulent flow and cavitation effects can be generated by means of high-speed turbulent flow, the preparation process is simple and mild, and the defects that other preparation methods adopted at present are harsh in preparation condition and tedious in preparation process are overcome.

The application provides a prediction control method, device and system for phase drift of a light quantum chip and a medium. The method comprises: continuously monitoring phase drift of each optical channel on the light quantum chip; predicting a predicted phase drift trajectory of each channel within a preset forward-looking time window in the future by using a drift trend prediction model; judging whether the channel will exceed a threshold within the window according to the predicted trajectory; for a first channel judged as not exceeding the threshold, maintaining continuous execution of a quantum computing task; for a second channel judged as exceeding the threshold, actively triggering a phase calibration operation of the channel before the phase drift of the channel actually exceeds a preset quantum fault tolerance threshold; when the calibration is performed, only the second channel is adjusted incrementally to compensate, so that the phase state returns to the threshold and the continuous execution of the computing task is maintained. The present application avoids computing interruption, guarantees task continuity and reduces calibration overhead through predictive intervention, and is suitable for large-scale light quantum chips.

The application provides a campus second-hand commodity transaction credible traceability evaluation method and system, relates to the electric digital data processing technical field, and fundamentally improves the accuracy and foresight of the credibility evaluation through the closed-loop linkage control system constructed from multi-dimensional feature deep quantification to individual-group correlation comparison, and then to adaptive strategy dynamic decision-making; The beneficial effects brought about include: 1) the initial trust evaluation ability of new users without historical data is enhanced; 2) the identification accuracy of hidden fraud behaviors with "mode anomaly" characteristics using high credit identity as a cover is improved; 3) the dynamic self-adaptation of risk intervention strategy is realized, which can intelligently adjust the control strength according to the overall risk situation of the platform, and achieves a better balance between ensuring platform safety and optimizing user experience.

This utility model discloses a heat exchanger for VOCs recovery and treatment, comprising two heat exchange tubes, each with an open end and sealed connection to a distribution pipe. The upper and lower parts of the distribution pipes are respectively connected to a refrigerant outlet pipe and a refrigerant inlet pipe. The upper and lower parts of the heat exchange tubes are also respectively connected to an exhaust gas inlet pipe and an exhaust gas outlet pipe, with the exhaust gas outlet pipe of the upper heat exchange tube connected to the exhaust gas inlet pipe of the lower heat exchange tube. A heat exchange component is located in the middle of each heat exchange tube, with its inner cavity connected to the distribution pipe. The outer surface of the heat exchange component is located within the inner cavity of the heat exchange tube, for heat exchange with the exhaust gas. A condensate outlet pipe is connected to the lower part of each heat exchange tube. The refrigerant can continuously flow in this system, entering the distribution pipe from the refrigerant inlet pipe, then entering the heat exchange component, and finally flowing out through the refrigerant outlet pipe. This circulation design allows the refrigerant to fully exchange heat with the exhaust gas, improving the refrigerant utilization rate.

The invention discloses a gastrointestinal symptom identification method and a sensing system, and relates to the technical field of health informatics and medical information processing, and the method comprises the steps: collecting excitation response and abdominal sound to calculate an acoustic transfer function, and employing a main formant frequency to invert a quality loading index representing a condensation water film effect; constructing an equalization gain based on the transfer function to carry out spectral shape correction on the abdominal sound time-frequency spectrum; constructing a symptom evidence vector and performing adaptive weighted scaling on the symptom evidence vector by using a quality loading index; and finally calculating the distance between the weighted vector and the symptom mode prototype library and mapping the distance into a prompt probability. According to the method, the problems of acoustic link drift and signal distortion caused by microenvironment humidity change in long-time monitoring are solved, and the accuracy and robustness of symptom identification are improved.

The present invention discloses a universal low-nitrogen burner nozzle structure. The nozzle structure includes: a main gas pipe, a plurality of peripheral long fuel pipes, a plurality of peripheral short fuel pipes and a central flame stabilizer; the peripheral long fuel pipe and the peripheral short fuel pipe are connected to the main gas pipe and are arranged alternately in the circumferential direction; the end of the peripheral long fuel pipe is provided with an end fuel injection hole and an end fuel injection short rod, and the root is provided with a root fuel injection hole and a root fuel injection short rod; the end of the peripheral short fuel pipe is provided with an axial fuel injection hole, and the root is provided with a circumferential fuel injection hole; the central flame stabilizer is provided at the end of the peripheral long fuel pipe, and the central flame stabilizer is provided with a swirl blade, a center hole, a transition flare and a spoiler cut. The nozzle structure of the present invention can better organize combustion and control pollutant emissions.

The utility model discloses an egg collecting device, which belongs to the technical field of egg collecting and comprises an egg laying frame and a conveyor body, an egg laying plate is fixedly connected inside the egg laying frame, an egg laying nest is arranged on the egg laying plate, an egg falling hole is arranged in the egg laying nest in a penetrating manner, a nest grass groove is arranged in the egg laying nest, and the egg laying nest is arranged in the conveyor body. The grass nesting groove is annularly formed around the egg falling hole; according to the utility model, the rotating handle rod can be separated from the limitation of the friction column through the stretching of the telescopic block, at the moment, the guide plate can be driven to synchronously move upwards through the sliding block under the springback of the spring, and the guide plate can be attached to the lower surface of the egg falling hole in cooperation with the rotation of the rotating handle rod on the guide plate, so that the egg falling hole is blocked; therefore, hatching eggs in the egg nest cannot fall down and be collected at the moment, the requirement for brooding in the egg nest is met, the egg nest can achieve conversion between egg collection and brooding, the henhouse does not need to be replaced, and convenience and rapidness are achieved.

The present invention discloses a low-pollution burner head structure, comprising: a main gas pipe, an air guide pipe, a flame stabilizing disk, a long fuel injection rod, a short fuel injection rod and a central air chamber; the long fuel injection rod and the short fuel injection rod are connected to the end of the main gas pipe, arranged alternately in the circumferential direction, and radial fuel holes are provided at the ends; the main gas pipe is also provided with a backward injection rod and a radial injection hole; the central air chamber is arranged inside the main gas pipe, and the end of the air guide pipe penetrates into the main gas pipe and is connected to the central air chamber; the front end of the central air chamber is provided with an oblique injection rod, and the end is provided with a head axial cooling hole; the flame stabilizing disk is sleeved at the end of the main gas pipe and is located upstream of the long fuel injection rod and the short fuel injection rod, and the flame stabilizing disk is provided with a swirl blade, a transition flare and a spoiler. The low-pollution burner head structure of the present invention can better organize combustion and control pollutant emissions.

The present invention discloses a unified resource planning system based on a use case diagram and a working method thereof, and relates to a field of energy interconnection. The current resource planning can no longer adapt to new changes in the situation. The present invention includes: an access terminal; a laboratory module: including a regional load forecasting submodule, an energy supply and demand situation submodule, a regional distribution network planning submodule, a cost simulation submodule, a transmission and transformation cost analysis submodule, an investment capacity calculation submodule, and an investment strategy submodule; a middle platform service module: the data middle platform feeds back to the business middle platform based on the laboratory data and the data generated by the business, and commercializes all data, so that the business middle platform carries all general businesses and supports the access terminal to quickly respond to application needs; the management and operation and maintenance module constitutes an active and intelligent information security protection system. This technical solution empowers the traditional power grid with digital technology, improves the perception ability, interaction level, and operation efficiency of the power grid, and supports the access and comprehensive utilization of various energy sources.

The application provides a polyethylene gas pipeline risk analysis and early warning method and system based on a knowledge graph, and relates to the technical field of urban gas safety risk assessment.The existing technology has the problems of dispersed representation of the evaluation method of the gas pipeline risk, difficulty in uniformly organizing accident cases, operation data, specification requirements and management experience, unclear expression of the cause-effect relationship between indexes, difficulty in describing the risk propagation path, high dependence on expert subjective valuation, difficulty in realizing consistent dynamic updating of the evaluation results, and inaccurate prediction results.The mapping mechanism from the knowledge graph to the fuzzy Bayesian network automatically maps the entity hierarchy and the relationship type defined in the knowledge graph into the Bayesian network nodes and the directed edges, so that the network structure construction no longer completely depends on manual analysis, the influence of subjective experience on the model structure is reduced, the modeling efficiency is greatly improved, and the social and economic safety is protected.

The invention discloses an image processing method and device, a storage medium and electronic equipment. The method comprises the steps that an auxiliary processing area and a to-be-processed first image are displayed, the auxiliary processing area is used for obtaining at least one piece of auxiliary information referenced when the first image is processed, input of user-defined auxiliary information is allowed in the auxiliary processing area, and the at least one piece of auxiliary information comprises the user-defined auxiliary information; in response to a style processing request triggered for the first image, using the auxiliary processing area to obtain style auxiliary information, at least one piece of auxiliary information including the style auxiliary information, and the style auxiliary information being used for representing a target style to which the first image is expected to be processed; the first image is processed into a second image of the target style, and the image content similarity between the first image and the second image is larger than or equal to a preset threshold value. The technical problem of low image processing efficiency is solved.

The application belongs to the technical field of high polymer materials, and provides a persistent slow-release aromatic master particle and a preparation method thereof. The application obtains essence powder by mixing and aging aromatic substances and a slow-release agent; the essence powder, dry carrier resin, dry dispersing agent, plasticizer and compounded antioxidant are mixed, and low-temperature extrusion, cooling and granulation are sequentially performed to obtain the persistent slow-release aromatic master particle. The method adopts the slow-release agent to physically adsorb and anchor the liquid aromatic substances, and forms stable essence powder; during melt blending, the essence powder is wrapped by the carrier resin and fixed in the polymer network, and the release of the essence is delayed through the physical barrier effect, and the fragrance retention time is significantly prolonged. Meanwhile, the method adopts the low-temperature extrusion process to greatly reduce the heat loss and metamorphic risk of the aromatic substances in the processing process, ensures the purity of the fragrance type and the high retention rate of the effective components, and the obtained aromatic master particle has good processing adaptability, long-acting slow-release performance and safety.

The invention discloses mussel-imitating bacteria responsive injectable hydrogel as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The hydrogel is formed by compounding a mussel-imitating viscous hydrogel bracket and a bacterial response agent, the viscous hydrogel scaffold is QCS-EC (Quaternized Chitosan) and is formed by non-covalent binding of QCS (Quaternized Chitosan) and EGCG (Epigallocatechin Gallate); the bacterial response agent is a supramolecular nano cross-linked compound TEBox-B12, and is formed by self-assembly of box-shaped quaternized pyridine heterocyclic organic salt molecules TEBox and salt containing suprachaotropic liquid anions B12H12-through hydrogen bonds and electrostatic interaction. The hydrogel disclosed by the invention has NIR-II photo-thermal and photodynamic antibacterial treatment functions, and can be used for efficiently killing bacteria in deep tissues; the hydrogel also has high adhesion, good biocompatibility and injectability, is strong in convenience and applicability, can provide a good healing environment for wounds, promotes fibroblast proliferation and migration, accelerates wound tissue regeneration and healing processes, and reduces scar formation.

The utility model relates to the technical field of combined machine tools, in particular to a two-way expanding tool bit of a combined machine tool. The body flange is a main body structure of the expanding tool bit; the movable gear shaft penetrates through the body flange and is meshed with the left side helical teeth and the right side helical teeth; the left moving block is fixedly connected with the left helical tooth, and the right moving block is fixedly connected with the right helical tooth; the middle pressing plate, the right pressing plate and the left pressing plate press the left moving block and the right moving block on the body flange through bolts; the left side helical teeth and the right side helical teeth are bidirectional asymmetric helical racks, the left moving block and the right moving block are driven to move independently in two directions through axial movement of the moving gear shaft, and multi-procedure machining is completed through one-time feeding. The utility model provides the combined machine tool expanding tool bit which is compact in structure, zero in transmission clearance and capable of supporting two-way synchronous or asynchronous machining, the problems of low efficiency, poor precision, insufficient reliability and the like of traditional equipment are fundamentally solved, and technical guarantee is provided for machining of high-precision complex parts.

The embodiment of the invention discloses a recycling method of lithium iron phosphate black powder, a lithium iron phosphate positive electrode material and application, the recycling method comprises the steps of acid mixing, sintering, acid leaching, solid-liquid separation and respective treatment, comprehensive recycling of three major valuable elements of lithium, iron and phosphorus in the lithium iron phosphate black powder is achieved, lithium chloride is obtained by treating a liquid phase, and the lithium iron phosphate positive electrode material is recycled. The recovery rate is high, and the iron phosphate with high additional value is obtained by treating a solid phase instead of waste residues. Moreover, according to the recycling method disclosed by the embodiment of the invention, acid mixing and sintering under a preset condition are adopted, so that the phase of the lithium iron phosphate is converted, the occurrence state and the leaching behavior of impurity elements are regulated and controlled, and after treatment in the step, impurities such as Al, Ni, Co and Mn are selectively and efficiently reserved in a liquid phase in subsequent acid leaching, so that the quality of the lithium iron phosphate is improved. Iron and phosphorus are mainly enriched in a solid phase, so that a foundation is laid for subsequent preparation of high-purity iron phosphate.

The invention relates to an optimization method for cooperation of a branch zero-sequence protection outlet and a fast switching device. The optimization method comprises the following steps: step 1, modifying a new outlet mode of a branch zero-sequence protection I section of a high-voltage plant transformer into'high-voltage plant transformer branch switch 'and'locking switching'; step 2, connecting a contact of a newly added outlet relay TJ27 to a standby input 511 of the quick switching device through an outlet pressing plate by utilizing an existing cable standby core from a generator-transformer group protection cabinet to the quick switching device, and taking the contact as an input of'locking switching 'of the quick switching device; and step 3, the quick switching device is upgraded through software logic, after a newly added'locking quick switching 'input 511 is received, only displacement starting and voltage loss starting are locked, the quick switching device does not discharge, the zero-sequence I-section protection locking quick switching function can be realized, and meanwhile, after a zero-sequence II-section protection starting input is received again, quick switching can be started quickly. According to the invention, the problem that the quick switching device cannot be started after the branch zero-sequence overcurrent II-section protection action can be solved.

The invention provides a method for preparing a CdZnTe polycrystalline source by using a near-space sublimation method, and solves the technical problems that a CdZnTe blocky source for preparing a CdZnTe single crystal at present is expensive and difficult to prepare, and the mass production and large-scale application development of a CdZnTe thin film detector are restricted. According to the method, a CdZnTe polycrystal source is prepared by utilizing a CdZnTe particle source with lower cost and adopting a near-space sublimation method, and then the CdZnTe epitaxial single crystal film is grown by taking the prepared CdZnTe polycrystal source as a growth source and adopting the near-space sublimation method. By adopting the method disclosed by the invention, the preparation cost of the CdZnTe epitaxial single crystal film can be greatly reduced, and large-scale mass production and large-range popularization are realized.

The invention discloses a preparation method of a heat-conducting polyethylene composite material, a flame-retardant dynamic cross-linking agent and a preparation method of the flame-retardant dynamic cross-linking agent. The preparation method of the heat-conducting polyethylene composite material comprises the following steps: mixing the maleic anhydride grafted polyethylene, the flame-retardant dynamic cross-linking agent and the heat-conducting filler, and pressing to obtain the heat-conducting polyethylene composite material. The preparation method of the flame-retardant dynamic cross-linking agent comprises the following steps: dissolving a dihydroxyethyl amine derivative and a phenylboronic acid derivative in an anhydrous solvent in a molar ratio of 1: (0.8-1.2), and reacting in a nitrogen atmosphere to obtain a phenylboronic acid ester derivative; then adding diisocyanate for continuous reaction, and performing rotary evaporation to remove the solvent to obtain the flame-retardant dynamic cross-linking agent. Separation and recycling of the heat-conducting polyethylene composite material are achieved, and meanwhile the flame retardant efficiency of the heat-conducting polyethylene composite material is improved.

The application discloses an off-grid type reverse control integrated energy scheduling method based on cold storage thermal inertia, defines a thermal state of charge SOT through a first-order thermal resistance and thermal capacity model, and quantifies the cold storage thermal inertia as virtual energy storage; based on a SOT and SOC cooperative criterion, redundant power is over-cooled and absorbed as cold storage when photovoltaic power is abundant, and cold is released by using thermal inertia when photovoltaic power is insufficient; the second-order change rate of photovoltaic power is used to predict cloud shadow sudden drop and reduce load in advance; and residual error analysis is used to diagnose refrigeration energy efficiency abnormalities in real time. The application breaks through the limitation of electric-thermal scheduling separation, suppresses battery impact and avoids photovoltaic power abandonment through virtual energy storage scheduling by replacing electricity with heat, and improves the service life of the energy storage system and the comprehensive energy utilization rate.

The invention discloses a green and pollution-free method for extracting a metal simple substance from a metal compound, and belongs to the technical field of preparation and treatment of chemical raw materials. According to the method, the characteristics of strong dissolving capacity, high diffusivity, low surface tension, low viscosity and the like of a supercritical carbon dioxide system, especially the special reaction capacity under the conditions of high temperature and high pressure, are adopted, and a metal compound is directly converted into a metal simple substance. In the whole reaction process, chemical substances such as solutions, acids, alkalis and the like do not need to be added, only supercritical carbon dioxide is used as a reaction solvent, and no dangerous waste is generated after the carbon dioxide gas after the reaction is recycled, so that the method is a real green and pollution-free preparation method. The method not only provides a new solution for extraction of corresponding metal elementary substances in metal carbonate, metal carbide or metal oxide, but also provides a technical scheme for recycling of metal elementary substances of a common positive electrode material in a lithium ion battery.

The present application relates to the technical field of cross-border e-commerce risk monitoring, and discloses a cross-border e-commerce risk monitoring system and method based on data analysis. The method comprises cross-domain analysis and construction of an initial interaction chain on original trade records. Deviation of behavior from the compliance standard is identified through feature disturbance analysis, a disturbance signal is generated and injected into a deep audit process to guide event backtracking of a specific interaction chain segment, thereby locating the source operation event that causes the risk. Event attributes are extracted and mapped to a multi-dimensional risk assessment space for cluster analysis, and a risk evolution path is reconstructed. Key time sequence inflection points on the path are extracted and matched with a compliance time sequence grid for verification. If verification fails, a dynamic monitoring instruction is triggered and a customized monitoring parameter set is generated. Finally, all information is integrated to output a risk structure diagram. The method realizes accurate positioning of the risk source and time sequence monitoring of the evolution process.

The invention discloses a water-soluble star-comb polymer concrete viscosity reducer and a preparation method thereof, and belongs to the field of concrete. The water-soluble star-comb type polymer concrete viscosity reducer is prepared from the following raw materials in percentage by mass: 20 percent to 40 percent of a monomer, 0.05 percent to 0.80 percent of an initiator PEO-Br3, 0.01 percent to 0.20 percent of a catalyst, 0.05 percent to 0.25 percent of a ligand, 0.001 percent to 0.01 percent of an inactivating agent and the balance of water. The water-soluble star-comb polymer concrete viscosity reducer provided by the invention has the advantages of large steric hindrance, many active sites, low viscosity and excellent viscosity reduction performance.

The invention relates to an appliance (1) for cooking dishes, comprising:-an oven (2) having a cavity (3) and a door (4) associated with a front face (3A) of the cavity (3) and configured to selectively provide access to the interior of the cavity (3); -a cooking hob (6) defining an upper surface (1A) of the appliance (1); -providing at least one inlet opening (8) in the upper surface (1A); -at least one outlet opening (9); a downdraft range hood (10) having at least one suction assembly (11) configured to suck cooking fumes through said at least one inlet opening (8) and to discharge fumes through said outlet opening (9); -a duct system (12) comprising cooking fumes channels (12a, 12b) for flowing the sucked fumes between the inlet opening (8) and the outlet opening (9); the appliance (1) is characterized by comprising a chamber (160, 170) associated with the cooking fume suction channel (12a, 12b), a water tank (50) adapted to contain water and removably arranged in the chamber (160, 170), the water tank (50) being in fluid communication with the water boiler, the water tank (50) being accessible when the door (4) allows access to the interior of the cavity (3) of the oven (2).

The invention belongs to the technical field of emergency command and dispatch management evaluation, and particularly discloses and provides a multi-dimensional dynamic perception integrated cooperative command and dispatch system, which comprises a traffic weight updating module for updating the real-time traffic weight of each link of a whole road network according to the real-time vehicle traffic speed and the real-time ponding depth; the ponding trend prediction module determines a ponding prediction area based on the starting point and the ending point of the scheduling task, and predicts the ponding depth change of each link in the area in a future time period through hydrological deduction; the passing time window judgment module is used for judging a time window for keeping a passable state of each link in a future time period in combination with the accumulated water depth change; and the passing plan generation module is used for generating a scheduling path and a time plan by adopting a time-dependent shortest path search algorithm. According to the invention, the problems that the scheduling instruction is disjointed from the dynamic environment and the rescue deployment is in a passive response state are solved, and the accuracy and response efficiency of emergency command are improved.