Abstract

Disclosed are an apparatus for a simulation test of diesel engine fuel spray in an alpine environment and a test method, the apparatus comprising a fuel storage and pretreatment device, a fuel injection system, an optical visualization system, an environment chamber, and a spray pretreatment system. In alpine environmental conditions, the apparatus can achieve high-pressure injection of liquid, separate injected atomized mist into fine droplets and impinge same on a wall surface by means of a multi-droplet generation apparatus and a wall surface apparatus, and observe and record the whole process by means of an optical visualization path. According to the present invention, the problem of difficulty in distinguishing droplets due to the coalescence of spray into a sheet is avoided, the costs of a traditional spray and droplet test solution can be significantly reduced, and the problem of a high level of dependence on a control program in a constant volume vessel solution is solved. According to the present invention, simulation of spray test in an alpine environment is possible, and the test apparatus has a simple structure. Moreover, it is possible to conduct regular research on free spray, multi-droplet wall impingement, spray wall impingement, and development characteristics thereof under conditions such as different altitudes and different temperatures.

IPC Classes  ?

• F02M 65/00 - Testing fuel-injection apparatus, e.g. testing injection timing
• G01M 15/04 - Testing internal-combustion engines
• G01N 15/00 - Investigating characteristics of particlesInvestigating permeability, pore-volume or surface-area of porous materials

Abstract

The present invention pertains to the technical field of lithium-ion batteries. Disclosed are a silicon-carbon negative electrode material based on organosilicon waste silicon powder, a preparation method therefor, and use thereof. The preparation method of the present invention comprises the following steps: rapidly annealing organosilicon waste silicon powder; performing acid leaching by mixing the rapidly annealed waste silicon powder with an acid solution to obtain modified waste silicon powder; mechanically grinding the modified waste silicon powder to obtain ground modified waste silicon powder; mixing the ground modified waste silicon powder with an organic carbon source and a solvent, and subjecting the resulting precursor solution to spray granulation to obtain silicon-carbon microspheres; and introducing a carbon deposition precursor source to deposit carbon on the silicon-carbon microspheres, thereby obtaining the silicon-carbon negative electrode material. The present invention achieves the development of a novel silicon-carbon negative electrode material with high tap density, providing new ideas and new paths for the value-adding recycling of hard-to-treat organosilicon waste silicon powder in the organosilicon industry and the low-cost development of high-performance lithium-ion silicon negative electrodes.

IPC Classes  ?

• C01B 33/021 - Preparation
• H01M 4/36 - Selection of substances as active materials, active masses, active liquids
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,

Abstract

A method and a system to enhance the grid-supporting capability of energy storage integrated with renewable energy are provided. The method includes: determining and adjusting simulation parameters for various models based on a target testing project; simulating fault information and configuring the working state of physical terminals accordingly; identifying fault types and levels from operational parameters; determining fault handling strategies based on the faults; controlling physical terminals using the strategies and receiving feedback on handling results. This method ensures efficient and flexible testing for large-scale energy storage and renewable energy integration into the grid.

IPC Classes  ?

• G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks

Abstract

The present disclosure provides cannabicyclol derivatives and preparation methods thereof, belonging to the field of biomedical technology. In the present disclosure, citral (3,7-Dimethyl-2,6-octadienal) and derivatives thereof, and olive alcohol (1,3-Dihydroxy-5-pentylbenzene) and derivatives thereof are used as raw materials for the efficient synthesis of the cannabicyclol derivatives in a one-pot manner under an action of ethylenediamine and a photocatalyst.

IPC Classes  ?

• C07D 311/94 - Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems condensed with rings other than six-membered or with ring systems containing such rings
• A61K 31/352 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. cannabinols, methantheline
• A61K 31/4433 - Non-condensed pyridinesHydrogenated derivatives thereof containing further heterocyclic ring systems containing a six-membered ring with oxygen as a ring hetero atom
• A61K 31/5355 - Non-condensed oxazines containing further heterocyclic rings
• C07D 333/10 - Thiophene
• C07D 405/12 - Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
• C07D 407/12 - Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a chain containing hetero atoms as chain links
• C07D 413/12 - Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links

Abstract

Provided is a characteristic element combination anomaly derivative method of determining occurrence of a deep concealed plate-shaped ore body of a hydrothermal deposit. The method determines the spatial occurrence of the deep concealed ore body of the hydrothermal deposit through four working procedures, including: fine measurement of a metallogenic structure and systematic collection of samples, sample processing and multi-element quantitative analysis, mathematical model construction of characteristic element combination anomaly, and determination of the occurrence (the strike, the dip direction, the dip angle and the pitch direction) of the deep concealed ore body. The method solves the problem of judging the occurrence of the deep concealed ore body by interpreting geochemical anomalies of a primary halo and a secondary halo.

IPC Classes  ?

• G01N 33/204 - Structure thereof, e.g. crystal structure
• G01N 33/24 - Earth materials
• G01V 20/00 - Geomodelling in general

Abstract

An automatic knowledge graph construction method based on prior knowledge and knowledge connection is disclosed. The method includes obtaining prompt data by storing relevant topic information for constructing a knowledge graph as character strings; retrieving and saving article paragraphs from external data source based on the prompt data; respectively injecting prompt templates for four large language model agents of annotation, reasoning, cognition, and association; obtaining prior knowledge by inputting the injected prompt templates, article paragraphs, and specific task requirements into the agents; obtaining effective data related to the knowledge graph topic by inputting the article paragraphs, prior knowledge, and a pre-defined contrasting prompt text into a knowledge-connecting large language model; and configuring the effective data related to the knowledge graph topic and pre-defined input prompts as an input layer of a large language model automatic agent framework, obtaining entity-relation-entity triples, and completing the construction of the knowledge graph.

IPC Classes  ?

• G06N 5/022 - Knowledge engineeringKnowledge acquisition
• G06F 16/215 - Improving data qualityData cleansing, e.g. de-duplication, removing invalid entries or correcting typographical errors

Abstract

A preparation method for a carbon nanotube-sodiophilic metal anode-free sodium metal battery electrode material. The preparation method comprises the following steps: modifying the carbon nanotubes by using a dielectric barrier plasma device; mixing and stirring the modified carbon nanotubes with a sodiophilic metal salt to obtain a precursor slurry; and drying the precursor slurry, placing the precursor slurry into a tubular furnace after the drying, and heating same for reaction by introducing a reducing gas to obtain a carbon nanotube-sodiophilic metal anode-free sodium metal battery electrode material. The prepared electrode material has a stable structure, excellent conductivity, and excellent sodiophilicity, and can be applied to anode-free sodium metal battery electrode materials. The entire preparation process is controllable, with a short synthesis cycle and simple operation.

IPC Classes  ?

• H01M 4/134 - Electrodes based on metals, Si or alloys
• C01B 32/168 - After-treatment
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 4/04 - Processes of manufacture in general
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• B22F 9/22 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors

Abstract

Provided is a method for positioning and predicting concealed orebody based on parallel double-tunnel transient electromagnetic exploration, and belongs to the applied geophysics exploration technology. The method can locate and predict concealed orebodies with low resistivity around the tunnel in a full spatial domain based on a parallel double-tunnel transient electromagnetic method. The implementation of the method mainly includes measuring an electrical parameter, observing a tunnel transient electromagnet, calculating an apparent resistivity, determining an upper limit of an apparent resistivity abnormity, delineating the apparent resistivity abnormity and positioning and predicting concealed orebodies. The method can effectively solve the double-solution problem of positioning concealed orebodies in the full spatial domain of the tunnel.

IPC Classes  ?

• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Abstract

An anti-heat source fluctuation heat exchange system based on active flow control and its controlling method are provided. In operation, the heat source is delivered to both the tube side and the shell side of two sub-heat exchangers through two distinct processes, where it exchanges heat with the working fluid. An electronic control unit monitors the heat source flow fluctuations in the main circuit using flow sensors. Based on this data, the control unit adjusts the position of an electronic control three-way valve and continuously monitors the heat source flow rate in the sub-circuit in real time. This allows precise control of the flow distribution ratio of the heat source across the sub-circuits, ensuring that the heat exchange system maintains the required heat transfer to the working fluid despite fluctuations in the heat source flow. The system demonstrates a high level of adaptability to fluctuations in heat source.

IPC Classes  ?

• F28D 15/06 - Control arrangements therefor

Abstract

Disclosed in embodiments of the present invention are a heterogeneous graphene oxide moisture-induced power generator and a manufacturing method therefor. The heterogeneous graphene oxide moisture-induced power generator comprises: an integrally formed heterostructure composed of a first component and a second component and arranged horizontally or vertically, wherein the first component is made of graphene oxide, and the second component is made of reduced graphene oxide. The heterogeneous graphene oxide moisture-induced power generator provided by the present invention has a relatively high open-circuit voltage and excellent cycle stability, and has the potential to be applied in flexible batteries; and by connecting the heterogeneous graphene oxide moisture-induced power generator in series or parallel, an ultra-high voltage generator set can be obtained, and a reduction device can be additionally mounted on an industrial coating line for preparing graphene oxide, thereby enabling large-scale mass production.

IPC Classes  ?

• H02N 3/00 - Generators in which thermal or kinetic energy is converted into electrical energy by ionisation of a fluid and removal of the charge therefrom

Abstract

An enhanced flotation method of lepidolite ore based on high-entropy collection is provided for mineral processing. Concerning problems of conventional lepidolite collectors, such as low collection ability, poor selectivity, and large consumption, based on thermodynamic theory of complex multiphase solid-liquid systems, by adjusting and controlling the adsorption equilibrium constant of collector(s) on a surface of lepidolite and gangue minerals and entropy change during adsorption process, a high-entropy collector suitable for efficient separation of lepidolite is developed. Without changing conventional flotation procedures, enhanced flotation of lepidolite could be achieved only by adding sodium carbonate as a modifying agent with a low amount of the high-entropy collector.

IPC Classes  ?

• B03D 1/01 - Organic compounds containing nitrogen
• B03D 1/018 - Mixtures of inorganic and organic compounds

Abstract

A heterogeneous graphene oxide wet generator and a preparation method are provided. A heterogeneous graphene oxide wet generator includes an integrated forming heterostructure composed of the first part and the second part arranged in the left-right position or the up-down position, the material of the first part is graphene oxide, and the material of the second part is reduced graphene oxide. The heterogeneous graphene oxide wet generator provided by the invention has high open circuit voltage, excellent cycle stability, and has the potential to be applied to flexible batteries, after a series-parallel connection, a generator set with a high voltage can be obtained, and a reduction device can be installed on the industrial coating line for preparing graphene oxide, which is expected to be mass-produced.

IPC Classes  ?

• H02N 3/00 - Generators in which thermal or kinetic energy is converted into electrical energy by ionisation of a fluid and removal of the charge therefrom
• C01B 32/194 - After-treatment
• C01B 32/198 - Graphene oxide
• F03G 7/00 - Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for

Abstract

A preparation method for an interpenetrating solid electrolyte interface and the use thereof in the technical field of battery materials. The preparation method comprises: preparing a lithium oxide coating from a lithium metal electrode sheet in an air atmosphere; immersing same in a lithium polysulfide plating solution to prepare a lithium sulfide coating; and then drying same at room temperature to obtain a lithium sulfide/lithium oxide interpenetrating artificial solid electrolyte interface. By means of a simple chemical oxidation reduction method, a double-layer artificial SEI structure is designed to solve the problems, such as volume expansion in cycles, non-uniform lithium deposition, lithium dendrite growth, low coulombic efficiency, and bad long cycle stability, of lithium metal negative electrodes, improving effects in the application to lithium ion batteries.

IPC Classes  ?

• H01M 4/134 - Electrodes based on metals, Si or alloys
• H01M 4/1395 - Processes of manufacture of electrodes based on metals, Si or alloys
• H01M 4/04 - Processes of manufacture in general
• H01M 10/052 - Li-accumulators

Abstract

A preparation method and an application of an interpenetrating solid electrolyte interface are provided. According to the present disclosure, a lithium metal electrode plate is prepared into a lithium oxide plating layer in an air atmosphere, and then a lithium sulfide plating layer is prepared by soaking in a lithium polysulfide plating solution, and then a lithium sulfide/lithium oxide interpenetrating solid electrolyte interface is obtained by drying at normal temperature.

IPC Classes  ?

• H01M 10/0562 - Solid materials
• H01M 4/02 - Electrodes composed of, or comprising, active material
• H01M 4/04 - Processes of manufacture in general
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys

Abstract

A method, system, and readable storage medium for fault line selection in distribution networks is provided. The method includes: obtaining the zero-sequence current of each feeder and the zero-sequence voltage of the busbar within a preset time window after a fault occurs; using these to process the feeder's short-time window zero-sequence instantaneous power curve cluster in the distribution network through KPCA (Kernel Principal Component Analysis) for dimensionality reduction, determining the principal component scores; and performing BIRCH (Balanced Iterative Reducing and Clustering using Hierarchies) clustering based on these scores to identify whether a feeder is faulted. This clustering process allows for precise and rapid identification of the faulted feeder, even when the current is small, improving detection accuracy. This solves the problem of quickly identifying the faulted feeder in a small current grounding distribution network during single-phase grounding faults.

IPC Classes  ?

• G01R 31/08 - Locating faults in cables, transmission lines, or networks

Abstract

Provided is a detection method of spaceborne GNSS-R original intermediate frequency coherent reflection signals in ocean, polar and inland water areas, including: acquiring spaceborne GNSS-R original intermediate frequency signal data of TDS-1 or CYGNSS and preprocessing the data; selecting coherent detection feature engineering; setting data labels of different scenes and coherent and incoherent reflected signals; dividing a training set and a test set; and training and testing a multimode-oriented hybrid model for coherent and incoherent detection and classification of spaceborne GNSS-R signals, using the training set to train a model, applying a trained detection model to a test data set, and comparing and evaluating obtained detection results with a classical coherent detection algorithm.

IPC Classes  ?

• G01S 19/29 - Acquisition or tracking of signals transmitted by the system carrier related
• G01S 19/23 - Testing, monitoring, correcting or calibrating of a receiver element

Abstract

A method for coordinated control of wind-storage joint primary frequency regulation, considering rotational speed and SOC, within the field of power system frequency regulation, includes: determining if the grid frequency deviation exceeds the primary frequency regulation dead zone; if exceeded, calculating the system's frequency regulation demand power based on the deviation; assessing the available frequency regulation power from wind turbines using their rotational speed; formulating a frequency regulation strategy based on the demand and available power; and executing the strategy. This approach effectively addresses the delay caused by wind speed variations, which hinders wind turbines from promptly adjusting output power to meet primary frequency regulation demands. The method enhances the stability of power system operation.

IPC Classes  ?

• H02P 9/10 - Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• H02J 3/28 - Arrangements for balancing the load in a network by storage of energy
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• H02P 101/15 - Special adaptation of control arrangements for generators for wind-driven turbines

Abstract

A silicon-based anode water-soluble binder, a preparation method and an application thereof are provided. Raw materials of the silicon-based anode water-soluble binder of include a high molecular polymer and a low-molecular-weight organic acid. Taking the low-molecular-weight organic acid as a crosslinking agent, the silicon-based anode water-soluble binder can form a mutually crosslinked network structure by simultaneous polymerization of covalent ester bonds and non-covalent hydrogen bonds through in-situ esterification, providing more active sites for silicon anode and bonding, effectively inhibiting the volume expansion of the silicon anode during the charge-discharge cycle, further improving the electrochemical performance of the lithium-ion battery, and building a crosslinking network structure with multi-gradient energy dissipation, and then the prepared negative electrode pole piece and secondary battery have excellent electrochemical performance.

IPC Classes  ?

• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 4/04 - Processes of manufacture in general
• H01M 4/1395 - Processes of manufacture of electrodes based on metals, Si or alloys
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• H01M 4/02 - Electrodes composed of, or comprising, active material

Abstract

A preparation method of a doped manganese phosphate precursor includes steps as follows. Manganous salt and a doping metal M salt are dissolved in an acidic solution to obtain a dissolved solution, and then the dissolved solution is mixed with a phosphoric acid to form a mixed solution. The mixed solution is heated at a heating temperature in a range of 150° C. to 250° C. to obtain a heated solution, then a high-valent manganese salt is added into the heated solution to perform a reaction. After the reaction is complete, a precursor slurry is obtained. The precursor slurry is washed, filtered, and dried to yield the doped manganese phosphate precursor. The preparation method is simple, easy to operate, highly efficient, environmentally friendly, and low-cost. The precursor has high phase purity, controllable particle size ranging from the nanoscale to the microscale, good dispersibility, and high crystallinity.

IPC Classes  ?

• H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
• C01B 25/45 - Phosphates containing plural metal, or metal and ammonium
• H01M 4/36 - Selection of substances as active materials, active masses, active liquids

Abstract

m value into a conversion factor II, and combining calculated GNSS-R ZWD to obtain a GNSS-R IWV estimated value; and S6, verifying inversion performance of GNSS-R ZWD and integrated water vapor (IWV) by using reference data.

IPC Classes  ?

• G01S 13/95 - Radar or analogous systems, specially adapted for specific applications for meteorological use
• G01S 13/86 - Combinations of radar systems with non-radar systems, e.g. sonar, direction finder

Abstract

The present application relates to the technical field of the treatment of heavy metal pollution, and in particular, to a method for predicting heavy metal accumulation in soil based on an emission inventory and a receptor model. Atmospheric dust fall, irrigation water, a fertilizer, and a pesticide are used as heavy metal input flux sources of farmland soil, and surface runoff and a crop are used as output fluxes. A heavy metal pollutant input-output flux inventory is established to specify a dynamic equilibrium relationship of heavy metal accumulation in soil, and soil samples are collected and monitored continuously, which provides important help for determining a migration equilibrium of heavy metals in a farmland region affected by a nonferrous metal dressing and smelting slag yard and a source of soil heavy metal pollution, thereby providing theoretical guidance for subsequent prevention and accurate control of heavy metals in soil.

IPC Classes  ?

• G01N 33/24 - Earth materials
• G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
• G06Q 50/02 - AgricultureFishingForestryMining

Abstract

A preparation method of a graphene-based composite aerogel material for adsorbing heavy metal ions especially for a chelating agent/polymer/graphene composite aerogel material, includes: (1) preparing a chelating agent active solution; (2) preparing a GO/polymer mixed solution; (3) mixing the GO/polymer mixed solution with the chelating agent active solution to obtain the graphene-based composite aerogel material through a hydrothermal reaction. The polymer is used to enhance the mechanical strength of the aerogel and the chelating agent is used to improve the adsorption performance of the aerogel. The hydrothermal reaction is utilized to reduce graphene oxide to partially reduced graphene oxide, thereby forming a graphene-based aerogel. The composite aerogel has a high specific surface area and good mechanical strength. Moreover, active sites provided by the chelating agent and graphene further enhance the adsorption performance of the composite aerogel for metal ions.

IPC Classes  ?

• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/24 - Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 101/20 - Heavy metals or heavy metal compounds

Abstract

The present disclosure relates to a corrosion-resistant Sn—Ag—Cu series lead-free solder alloy, belonging to the technical field of soldering material. The present disclosure provides a Sn—Ag—Cu series lead-free solder alloy and a preparation method thereof, wherein the Sn—Ag—Cu series lead-free solder alloy includes, by mass percentage, 2.7-3.3% of Ag, 0.4-0.6% of Cu, 1.5-3.0% of Bi, 0.2-2.0% of Sb, 0.01-0.5% of Zr, and the balance of Sn. The Sn—Ag—Cu series lead-free solder alloy prepared by the preparation method of the present disclosure has properties such as low melting point, high tensile strength, and excellent corrosion resistance. It can be used under harsh conditions and has a wide range of applications.

IPC Classes  ?

• B23K 35/26 - Selection of soldering or welding materials proper with the principal constituent melting at less than 400°C
• C22C 1/02 - Making non-ferrous alloys by melting
• C22C 13/00 - Alloys based on tin

Abstract

Provided is a method for preparing 7N tellurium, including the following steps: mixing 2N crude tellurium with concentrated sulfuric acid, and subjecting a resulting mixture to oxidation roasting to obtain a selenium dioxide vapor and a roasting residue; mixing the roasting residue with a strong base solution, and subjecting a resulting solution to electrolysis to obtain 4N electrolytic tellurium; subjecting the 4N electrolytic tellurium to vacuum distillation to obtain 5N tellurium; and melting the 5N tellurium to obtain a tellurium melt, immersing a crystallizer in the tellurium melt, and subjecting the tellurium melt to crystallization to obtain the 7N tellurium; wherein the method is performed for a total time of less than 14 days.

IPC Classes  ?

• C01B 19/02 - Elemental selenium or tellurium

Abstract

An optimized PLP placement method for plateau and mountain wind farms is provided. Starting from the outermost wind turbines, it measures turbine parameters. Firstly, install the first PLP to safeguard the outermost ones. Then, combine its parameters with those of the tallest turbine near the center to set up the second PLP, protecting turbines within a connection range. Next, use the previous step's parameters and those of the tallest turbine in the vertical area of the first two PLPs' plane to install the third PLP, shielding turbines in the area formed by three points. Repeat until covering the whole farm. Many cases prove its reliability, economy and suitability for wide application in optimizing PLP placement.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation
• G01B 21/16 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance or clearance between spaced objects
• G01C 5/00 - Measuring heightMeasuring distances transverse to line of sightLevelling between separated pointsSurveyors' levels
• G06F 17/11 - Complex mathematical operations for solving equations
• G06F 113/06 - Wind turbines or wind farms

Abstract

A manganese iron oxide and a preparation method thereof, and a preparation method for lithium manganese iron phosphate cathode materials are provided. The preparation method for the manganese iron oxide includes the following steps: Configuring a mixed salt solution containing the first complexing agent, antioxidant, manganese salt, and iron salt; mixing the mixed salt solution, the second complexing agent, oxidant and deionized water to undergo a complexation-oxidation-precipitation reaction, filtering, washing, and drying a precipitate obtained after the reaction to obtain a manganese iron oxide. The preparation methods for the manganese iron oxide and lithium manganese iron phosphate cathode materials are simple, the physical and chemical indexes of the product are controllable, the raw materials are easy to obtain, the cost is low, the reaction conditions are mild, the corrosion resistance requirements of the equipment are not high, the technical difficulty is low, and it is easy to scale production.

IPC Classes  ?

• C01G 49/00 - Compounds of iron

Abstract

The present application relates to the technical field of heavy-metal pollution remediation, and relates in particular to a soil heavy‐metal accumulation predicting method employing an emission inventory and a receptor model. The method comprises: using atmospheric dust deposition, irrigation water, chemical fertilizers and pesticides as input flux sources of heavy metals to farmland soil, using surface runoff and crops as output fluxes, and constructing an input-output flux inventory of heavy-metal pollutants to clarify a dynamic balance relationship of soil heavy-metal accumulation; and continuously collecting and monitoring of soil samples. The invention provides crucial assistance in determining the transport balance of heavy metals in farmland areas impacted by non-ferrous metal smelting and beneficiation slag sites and in identifying sources of soil heavy-metal pollution, and offers theoretical guidance for subsequent soil heavy-metal remediation and targeted control.

IPC Classes  ?

• G16C 20/30 - Prediction of properties of chemical compounds, compositions or mixtures
• G16C 20/20 - Identification of molecular entities, parts thereof or of chemical compositions
• G01N 27/626 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas

Abstract

An optical storage system designed to compensate for the water hammer effect in hydropower turbines and its cooperative frequency modulation method are provided. The method involves detecting the water hammer effect and utilizing a pre-established system model integrating a hydropower unit, photovoltaic system, and hybrid energy storage system. Through model predictive control combined with a whale optimization algorithm, the governor parameters of the hydropower unit are optimized. The system then obtains the photovoltaic active power output and the battery's state of charge (SOC) within the hybrid energy storage system. Based on these parameters, a collaborative control strategy for the photovoltaic and hybrid energy storage systems is determined and executed. This strategy enables effective control of the photovoltaic system and/or hybrid energy storage to compensate for reverse power adjustments in the hydropower unit, addressing the water hammer effect and ensuring stable power grid operation.

IPC Classes  ?

• H02J 3/24 - Arrangements for preventing or reducing oscillations of power in networks
• G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

Abstract

Provided is a method for judging spatial oblique distribution patterns and deep prospecting and targeting concealed ore bodies of a hydrothermal deposit controlled by structures. The method includes: a structural classification ore-controlling law and an combination pattern of ore-controlling structures are determined. A mechanical mechanism of the spatial distribution of ore deposits, ore segments, ore body groups and ore bodies controlled by multi-scale structures is revealed, and an oblique distribution law of ore bodies on a plane and a cross-section is determined. According to the oblique distribution law and the erosion depth of ore body groups and ore segments, pinching-out elevations of the maximum deep extensions of main ore body groups and ore segments are inferred. Deep prospecting and targeting of a concealed ore body is realized, and the deep resource potential is predicted.

IPC Classes  ?

• G01N 33/24 - Earth materials
• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

Abstract

Provided is a target delineation method for deep prospecting of a hydrothermal deposit controlled by a fault-fold structure, including: analyzing an echelon distribution of orebodies or mineralized bodies, and analyzing a mechanical mechanism of the ore-forming structure; determining a trend and a plunge of an overall principal compressive stress of the mining area, as well as trends and plunges of local principal compressive stresses at different locations of an anticline; revealing a control effect of the local principal compressive stress on formation of an ore-bearing space and on a spatial distribution of orebody groups; and determining a stress transformation region controlled by the deposit structure as a favorable ore-forming zone of the deposit, and determining a stress transformation region controlled by an orebody structure in the favorable ore-forming zone as a target position for deep concealed orebodies.

IPC Classes  ?

• G01V 9/00 - Prospecting or detecting by methods not provided for in groups

Abstract

The provided are a line fault detection method, system, equipment, and a computer-readable storage medium. The line fault detection method comprises the following steps: Inject a pulse signal into the grounding electrode line and acquire fault voltage traveling wave data responding to the fault point in the grounding electrode line based on the measuring spot; Based on the fault voltage traveling wave data and a preset step size, determine the voltage forward traveling wave sequence and voltage reverse traveling wave sequence for the entire grounding electrode line; Based on the corresponding energy superposition expressions of the voltage forward traveling wave sequence and the voltage reverse traveling wave sequence, determine the integral value sequence of the traveling wave product within a preset time period; Based on the maximum mutation point in the integral value sequence, determine the fault distance.

IPC Classes  ?

• G01R 31/11 - Locating faults in cables, transmission lines, or networks using pulse-reflection methods
• G01R 31/08 - Locating faults in cables, transmission lines, or networks

Abstract

The invention relates to relay protection technology, specifically a method, system, and medium for fault arc suppression in distribution networks using closed-loop self-healing control. When a fault is detected in the distribution network, transient changes in the measured and virtual phase currents of each phase are obtained. The Pearson correlation coefficient between these changes is calculated to identify the target fault phase. The neutral point-to-ground voltage value is retrieved, and the target fault phase's voltage is adjusted to zero based on this value. The current from the fault phase, when its voltage is zeroed, is acquired. An injected current is then compensated at the neutral point to match this value, ensuring both the ground fault current and the fault phase voltage are reduced to zero. This method enhances the applicability of arc suppression for grounding faults in distribution networks.

IPC Classes  ?

• H02H 9/08 - Limitation or suppression of earth fault currents, e.g. Petersen coil
• G01R 25/00 - Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
• G01R 31/08 - Locating faults in cables, transmission lines, or networks
• G01R 31/52 - Testing for short-circuits, leakage current or ground faults
• H02H 9/04 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage

Abstract

The provided are a method, system, and medium for active arc-extinguishing voltage-current conversion in distribution networks. The method includes: detecting a single-phase-to-ground fault in the distribution network and identifying the target faulty phase; injecting compensating currents into the target faulty phase to reduce its voltage; measuring the residual current at the fault point during the injection of compensating currents and the zero-sequence voltage of the target faulty phase; determining a critical zero-sequence voltage threshold based on the residual current at the fault point and assessing whether this critical value exceeds the present zero-sequence voltage; if so, ceasing the injection of compensating currents into the target faulty phase and instead injecting active arc-extinguishing currents at the neutral point of the distribution network to mitigate ground currents at the grounding points of the distribution network. The objective is to enhance the applicability of arc-extinguishing methods for ground faults in distribution networks.

IPC Classes  ?

• H02H 7/22 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systemsEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for switching devices
• H02H 1/00 - Details of emergency protective circuit arrangements

Abstract

The present invention belongs to the technical field of biomedicine. Disclosed are a cannabicyclol derivative, a preparation method therefor and the use thereof. By using citral (3,7-dimethyl-2,6-octadienal) and a derivative thereof, and olivetol (1,3-dihydroxy-5-pentylbenzene) and a derivative thereof as starting materials, the cannabicyclol derivative is efficiently synthesized by means of a one-pot method under the combined action of ethylenediamine and a photocatalyst, thereby achieving simple and convenient operation, simplified steps and superior yield. In addition, the application potential of cannabicyclol and the derivative thereof in the research and development of tumor stem cell drugs is also explored, especially for glioblastoma stem cells, pancreatic cancer stem cells and liver cancer stem cells, showing the prospect of being an anti-tumor drug for specifically targeting tumor stem cells.

IPC Classes  ?

• A61K 31/352 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. cannabinols, methantheline
• C07D 311/94 - Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems condensed with rings other than six-membered or with ring systems containing such rings
• A61P 35/00 - Antineoplastic agents

Abstract

This application presents an adaptive arc suppression method for ground faults in distribution networks, merging active and passive relay protection strategies. The method proceeds as follows: based on collected ground parameters, the fault phase is identified; compensation current is calculated from the fault's electromotive force, ground leakage resistance, and ground capacitance; current is injected at the neutral point according to the compensation current; finally, the arc suppression scheme is executed based on the zero-sequence voltage of the network's busbars. This approach incorporates both voltage- and current-based methods, addressing the limitation of fixed operation scenarios in traditional arc suppression methods. By quickly adapting to various fault situations, this method ensures an efficient and prompt response tailored to specific scenario requirements.

IPC Classes  ?

• H02H 9/00 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
• G01R 31/52 - Testing for short-circuits, leakage current or ground faults
• H02H 9/08 - Limitation or suppression of earth fault currents, e.g. Petersen coil
• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks

Abstract

This invention relates to a method and system for adaptive reclosing of single-phase AC transmission lines in wind power systems. The invention utilizes single-ended electrical quantity to determine the type of fault. After a fault occurs, a signal acquisition device is used to sample the voltage of the fault phase. The obtained voltage is subjected to short-time Fourier transform to extract the amplitude of the fundamental frequency voltage component, and then processed with differential amplification to construct a fault nature identification criterion. Combined with a sliding time window for fault identification, if it is identified as a permanent fault, the reclosing device is locked out; if it is identified as a transient fault, the fault disappearance time is calculated to determine the reclosing time and output the closing signal. This invention is designed for adaptive reclosing after a circuit breaker trips in wind power AC transmission lines.

IPC Classes  ?

• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
• G01R 31/52 - Testing for short-circuits, leakage current or ground faults
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network

Abstract

22 capable of providing discharge capacity, thus allowing the regenerated positive electrode material to exhibit more excellent electrochemical properties, and further reducing costs. The method is simple and easy to operate, and has modest requirements on regeneration reaction temperature, and while not needing long-time high-temperature calcination, the method can be used for simultaneously carrying out two processes polycrystalline cracking into single crystalline and lithium replenishment, thus involving low energy consumption, and being easy to popularize.

IPC Classes  ?

• H01M 10/54 - Reclaiming serviceable parts of waste accumulators
• C30B 9/00 - Single-crystal growth from melt solutions using molten solvents
• C30B 29/22 - Complex oxides
• H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
• H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• C01G 53/00 - Compounds of nickel

Abstract

The present invention relates to the field of biomedicine, and specifically provides a nucleic acid construct, an engineered pluripotent stem cell prepared from the nucleic acid construct, and a neural stem cell, astrocyte, mesenchymal stem cell, GABAergic nerve cell and DAergic nerve cell obtained by differentiation of the engineered pluripotent stem cell. Further provided is a use of the nucleic acid construct and the various cells in treatment of diseases associated with dopaminergic neuron degeneration and/or damage.

IPC Classes  ?

• C12N 5/10 - Cells modified by introduction of foreign genetic material, e.g. virus-transformed cells
• C12N 5/0735 - Embryonic stem cellsEmbryonic germ cells
• C12N 5/0797 - Stem cellsProgenitor cells
• C12N 5/079 - Neural cells
• C12N 5/0775 - Mesenchymal stem cellsAdipose-tissue derived stem cells
• C12N 15/85 - Vectors or expression systems specially adapted for eukaryotic hosts for animal cells
• C12N 15/53 - Oxidoreductases (1)
• C12N 15/55 - Hydrolases (3)
• C12N 15/60 - Lyases (4)
• A61K 35/545 - Embryonic stem cellsPluripotent stem cellsInduced pluripotent stem cellsUncharacterised stem cells
• A61P 25/00 - Drugs for disorders of the nervous system

Abstract

r, Finally, according to the radar incidence angle parameters, the delay is changed from zenith direction to radar line of sight direction.

IPC Classes  ?

• G01S 13/90 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging using synthetic aperture techniques
• G01S 7/40 - Means for monitoring or calibrating

Abstract

The present disclosure relates to the technical field of magnesium metallurgy, and in particular to a device and method for magnesium smelting by vacuum carbothermal reduction of calcined dolomite. The device includes a reaction chamber, a condensation chamber, a first temperature regulation module and an air pressure regulation module, and the reaction chamber is communicated with the condensation chamber via a gas-guide tube. In the present disclosure, different condensation zones are utilized to sequentially condense gaseous products based on dew points, effectively preventing impurities from entering the condensation process of magnesium. Additionally, based on dynamic equilibrium in the condensation process of the gaseous products within the condensation chamber, efficient condensation and collection of magnesium in the condensation zone at middle section is ensured while preventing reverse reaction between magnesium and CO in the condensation zone of magnesium, enhancing the condensation-based purification effect.

IPC Classes  ?

• C22B 26/22 - Obtaining magnesium
• C22B 1/24 - BindingBriquetting
• C22B 5/10 - Dry processes by solid carbonaceous reducing agents
• F27B 5/02 - Muffle furnacesRetort furnacesOther furnaces in which the charge is held completely isolated of multiple-chamber type
• F27B 5/04 - Muffle furnacesRetort furnacesOther furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
• F27D 9/00 - Cooling of furnaces or of charges therein

Abstract

A high-concentration high-entropy electrolyte and a preparation method therefor, and a battery. The high-concentration high-entropy electrolyte has a high molar concentration and a high degree of confusion, and comprises a solvent, a first solute salt, and an additive salt, the first solute salt being a solute salt having a high solubility in the solvent, and the additive salt including three or more solute salts. A molar concentration of the solute salt in the high-concentration high-entropy electrolyte ranges from 20 M to 60 M, a molar concentration of the first solute salt exceeds 20 M, and the molar concentration of the first solute salt accounts for 50% or higher of the molar concentration of the high-concentration high-entropy electrolyte. A sodium-carbon dioxide battery assembled with the high-concentration high-entropy electrolyte not only has a high power density, but also has an excellent discharge specific capacity and rate performance. In addition, the battery also shows good cycling stability, and the battery generates a liquid discharge product, a formic acid, so that the blockage of a solid discharge product to a catalytic layer is effectively avoided.

IPC Classes  ?

• H01M 10/056 - Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
• H01M 10/0563 - Liquid materials, e.g. for Li-SOCl2 cells
• H01M 10/0568 - Liquid materials characterised by the solutes

Abstract

The present disclosure provides a method for designing a supercritical heat exchanger based on pseudo-phase transition partition. The method mainly includes the following steps: inputting boundary conditions of a heat exchanger; calculating an upper boundary temperature and a lower boundary temperature of a pseudo-phase transition region; calculating a temperature of an inner wall surface of a supercritical fluid; determining an upper boundary temperature of a pseudo-superheated condensation region; and dividing the heat exchanger into four sections on the basis of above three boundary temperatures and inlet and outlet temperatures, and calculating the section size and the total size of the heat exchanger. According to the method, the automatic partition determination of single-phase cooling and pseudo-superheated condensation in a supercritical air cooler can be realized, requiring no division of the heat exchanger according to equal enthalpy change or equal length, and the calculation is rapid and accurate.

IPC Classes  ?

• G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
• G06F 113/08 - Fluids
• G06F 119/08 - Thermal analysis or thermal optimisation

Abstract

A high-concentration high-entropy electrolyte and its preparation method and battery were disclosing in the present disclosure. A high-concentration high-entropy electrolyte, including a solvent, a first solute salt and added salts, the first solute salt is a solute salt with high solubility in the solvent, while the added salts are composed of at least three solute salts, the molar concentration range of the solute salts in the high-concentration high-entropy electrolyte is between 20 M-60 M, the molar concentration of the first solute salt is greater than 20 M, and the molar concentration of the first solute salt is greater than 50% of the molar concentration of the high-concentration high-entropy electrolyte. The sodium-carbon dioxide batteries assembled with high-concentration high-entropy electrolytes not only have higher power density, but also have excellent discharge specific capacity and rate performance.

IPC Classes  ?

• H01M 10/0568 - Liquid materials characterised by the solutes
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 10/0565 - Polymeric materials, e.g. gel-type or solid-type
• H01M 10/0569 - Liquid materials characterised by the solvents
• H01M 4/02 - Electrodes composed of, or comprising, active material

Abstract

The present application relates to the field of resource recovery, and discloses a method for efficiently recovering sulfur and zinc-silver from high-sulfur residues obtained in zinc hydrometallurgy. A large amount of high-sulfur residues are contained in second-stage underflow liquid obtained by performing oxygen pressure leaching. In the present application, a proper amount of iron sulfate is first added to serve as an inducing agent, iron disulfide in high-sulfur residues is converted into elemental sulfur, so as to increase the content of the elemental sulfur; in a flotation stage, reaction conditions are controlled and an inhibitor is added, so as to improve a recovery rate of sulfur, enable more metals such as lead-zinc to enter tailings, and provide a basis for further improvement of the purity of the sulfur; the tailings and hot filtered residues are mixed with filtrate to prepare a slurry, ammonia water is added to the slurry, a zinc-ammonia complex method is used to dissolve zinc-silver, then a silver mirror reaction is used to recover metallic silver, and finally a zinc-ammonia complex solution is used to absorb and capture carbon dioxide to prepare a basic zinc carbonate product. The present application is simple to operate, has good application prospects, and overcomes the problems of a low sulfur recovery rate in existing processes, an impact on sulfur purification caused by the lead-zinc entering concentrate, a low zinc-silver recovery rate and high recovery costs.

IPC Classes  ?

• C01B 17/06 - Preparation of sulfurPurification from non-gaseous sulfides or materials containing such sulfides, e.g. ores
• C01G 9/00 - Compounds of zinc
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 11/00 - Obtaining noble metals

Abstract

The present application relates to the field of high-concentration organic wastewater and solid waste resource utilization, and discloses a method for synergistic biological evaporation treatment of coffee wastewater and solid waste. The method of the present application performs synergistic biological evaporation treatment on biofilm coffee husks, bio-dried coffee husks and bio-dried sludge which respectively serve as an expanding agent and a microbial carrier, kitchen waste as a supplementary carbon source, and coffee wastewater. The present application can achieve a good effect of synergistic treatment of agricultural and forestry waste or bio-dried sludge and coffee wastewater, and achieve the purpose of comprehensive utilization of resources by treating waste with waste.

IPC Classes  ?

• C02F 3/00 - Biological treatment of water, waste water, or sewage

Abstract

Provided is a method for preparing high-purity indium (In). The method for preparing the high-purity In includes: distilling refined In to obtain an In vapor-containing gas; and condensing the In vapor-containing gas to obtain the high-purity In; where the distilling is conducted at a temperature of 1,000° C. to 1,100° C. under a vacuum degree of 1.0×10−3 Pa to 5.0×10−2 Pa; and the condensing is conducted at a temperature of 700° C. to 900° C. under a vacuum degree of 1.0×10−3 Pa to 5.0×10−2 Pa. The In vapor-containing gas is obtained by controlling the temperature and vacuum degree of the distilling to evaporate In and impurities with a vapor pressure higher than the In. The temperature and vacuum degree of the condensing are adjusted to condense the In in the In vapor-containing gas.

IPC Classes  ?

• C22B 58/00 - Obtaining gallium or indium
• B01D 3/10 - Vacuum distillation
• B01D 3/42 - RegulationControl
• B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action

Abstract

Provided are a battery electrolyte containing a bifunctional additive and an application thereof in a lithium-sulfur battery, belonging to the technical field of lithium-sulfur battery electrolyte. According to the disclosure, a bifunctional additive of a triazine thiol compound is used as an additive, and triazine groups and thiol groups cooperate.

IPC Classes  ?

• H01M 10/0567 - Liquid materials characterised by the additives
• H01M 4/02 - Electrodes composed of, or comprising, active material
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 10/052 - Li-accumulators
• H01M 10/0569 - Liquid materials characterised by the solvents

Abstract

Provided are a battery electrolyte containing a bi-functional additive, and the use thereof in a lithium-sulfur battery, belonging to the technical field of lithium-sulfur battery electrolytes. A bi-functional additive, i.e., a triazine thiol compound, is used as an additive to improve the performance of lithium-sulfur batteries, such that the synergy of a triazine group and a thiol group remarkably ameliorates the problem of interfaces of positive and negative electrodes of lithium-sulfur batteries, and simultaneously conversion of polysulfides can be regulated and controlled so as to effectively inhibit the shuttle effect and improve the coulombic efficiency of batteries, thereby achieving good cycle stability; the preparation method is simple, thus facilitating large-scale production.

IPC Classes  ?

• H01M 10/0567 - Liquid materials characterised by the additives
• H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
• H01M 10/052 - Li-accumulators

Abstract

An uncoupled charge positioning apparatus, and a blast hole comprising the uncoupled charge positioning apparatus. The uncoupled charge positioning apparatus comprises: a sleeve (1), comprising an engagement unit (11) arranged thereon; and a plurality of brackets (12) movably connected to the sleeve (1) by means of the engagement unit (11), the plurality of brackets (12) being arranged along the circumferential direction of the sleeve (1). According to the uncoupled charge positioning apparatus, and the blast hole comprising the uncoupled charge positioning apparatus, the positions of uncoupled charge cartridges can be flexibly adjusted, so that the rock mass on the blast side can be fully destroyed, the damage to the rock mass on the side to be protected is reduced, the stability of the surrounding rock and the flatness of the excavation contour surface are ensured, and the explosive energy utilization is improved. The operation is simple, the working efficiency is high, the safety is good, and the economic cost is decreased.

IPC Classes  ?

• F42D 1/22 - Means for holding or positioning blasting cartridges or tamping cartridges in boreholes
• F42D 1/08 - Tamping methodsMethods for loading boreholes with explosivesApparatus therefor

Abstract

A method for preparing a carbon nanotube sodiophilic metal anode-free sodium metal battery electrode material is provided, and the method includes the following steps: the carbon nanotubes are modified by a dielectric barrier plasma device; the modified carbon nanotubes are mixed and stirred with a sodiophilic metal salt to obtain a precursor slurry; the precursor slurry is dried, placed in a tube furnace after drying, and heated by introducing a reducing gas to react, thereby obtaining a carbon nanotube sodiophilic metal anode-free sodium metal battery electrode material. The electrode material prepared by the method has a stable structure, excellent electrical conductivity, and excellent sodium affinity, and can be applied to anode-free sodium metal battery electrode materials. The entire preparation process is controllable, the synthesis cycle is short, and the operation is simple.

IPC Classes  ?

• H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 4/02 - Electrodes composed of, or comprising, active material
• H01M 4/04 - Processes of manufacture in general
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium

Abstract

A method for froth-controlled flotation of argillaceous lepidolite ore, including: crushing and grinding an ore, adding water to obtain pulp; adding agents thereto, and conducting roughing to obtain roughing concentrate and roughing tailing; adding agents to the roughing tailing, and conducting first scavenging to obtain first scavenging concentrate and first scavenging tailing; subjecting the first scavenging tailing to second scavenging to obtain second scavenging concentrate and second scavenging tailing; adding agents to the roughing concentrate, conducting first cleaning to obtain first cleaning concentrate and first cleaning tailing; subjecting the first cleaning concentrate to second cleaning to obtain lithium concentrate I and second cleaning tailing; combining the first scavenging concentrate, second scavenging concentrate, first cleaning tailing, and second cleaning tailing to obtain lithium-containing mixed middling, adding agents thereto, and conducting cleaning-scavenging to obtain lithium concentrate II and cleaning-scavenging tailing; and combining the lithium concentrate I and lithium the concentrate II.

IPC Classes  ?

• B03D 1/02 - Froth-flotation processes
• B03D 1/004 - Organic compounds
• B03D 1/08 - Subsequent treatment of concentrated product
• C22B 26/12 - Obtaining lithium

Abstract

A radio frequency sterilization device for food, comprising: a radio frequency assembly, wherein a first accommodating space is formed in the radio frequency assembly, the radio frequency assembly is configured to generate an electric field in the first accommodating space, and the electric field is used for sterilization; a constant-temperature box (7), located on one side of the radio frequency assembly, wherein a second accommodating space is formed in the constant-temperature box (7); and a spiral pipeline structure (12), comprising a feeding port (13) and a discharge port (8), wherein the feeding port (13) is used for allowing semi-solid food to be sterilized to enter, the spiral pipeline structure (12) comprises at least two pipeline layers arranged in parallel, the two pipeline layers are bent and communicated, one part of each pipeline layer is arranged in the first accommodating space, and the other part is arranged in the second accommodating space, and said semi-solid food entering from the feeding port (13) is sequentially sterilized, heated, and sterilized, or is sequentially heated, sterilized, and heated, and then reaches the discharge port (8), so that the temperature uniformity of said semi-solid food in the radio frequency sterilization process is kept.

IPC Classes  ?

• A23L 3/01 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment using microwaves or dielectric heating
• A23L 3/22 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials while they are progressively transported through the apparatus with transport through tubes
• A23L 3/00 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
• A23B 7/01 - Preserving by heating by irradiation or electric treatment
• A23B 7/005 - Preserving by heating

Abstract

A recycling method of waste lithium manganate cathode materials is provided. The recycling method includes: firstly, mixing the waste lithium manganate cathode materials with sulfuric acid for hydrothermal reaction, to obtain manganese dioxide and washing solution; then reacting the washing solution with ammonium bicarbonate, to obtain manganese carbonate and lithium sulfate; and mixing the manganese dioxide, lithium sulfate and lithium hydroxide monohydrate, then performing a sintering treatment, washing and a tempering treatment in sequence, to obtain recycled lithium manganate cathode materials. The recycling method can obtain manganese dioxide, spherical manganese carbonate and lithium sulfate by adjusting the reaction temperature and reaction time, realizing the effective recovery of manganese and lithium. The lithium manganate cathode materials can be re-prepared by using the recovered manganese and lithium and adding lithium hydroxide monohydrate, and the lithium manganate cathode materials have excellent electrochemical performance.

IPC Classes  ?

• H01M 10/54 - Reclaiming serviceable parts of waste accumulators
• C01G 45/12 - Complex oxides containing manganese and at least one other metal element
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

Abstract

A method for recycling a waste lithium manganate positive electrode material. The method comprises: firstly, mixing a waste lithium manganate positive electrode material with sulfuric acid, and then carrying out a hydrothermal reaction to obtain manganese dioxide and a washing solution; then, reacting the washing solution with ammonium bicarbonate to obtain manganese carbonate and lithium sulfate; and finally, mixing manganese dioxide, lithium sulfate and lithium hydroxide monohydrate, followed by sintering, washing and tempering treatments in sequence, thereby obtaining the recycled lithium manganate positive electrode material. The method achieves the effective recovery of manganese and lithium.

IPC Classes  ?

• C01G 45/12 - Complex oxides containing manganese and at least one other metal element
• H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• H01M 10/54 - Reclaiming serviceable parts of waste accumulators

Abstract

222222S is higher than 90%, and the purity is greater than 95%, thereby satisfying the purity standard of copper matte in copper blowing; and the direct recovery rate of condensed As is higher than 90%, and the purity is greater than 99.5%.

IPC Classes  ?

• C22B 15/00 - Obtaining copper
• C22B 30/04 - Obtaining arsenic
• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
• C22B 9/04 - Refining by applying a vacuum
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 7/04 - Working-up slag

Abstract

The partition monitoring method for concrete dam operation key parts provided by the disclosure firstly utilizes the extracted monitoring data time-frequency vector to partition the concrete dam key parts, and on this basis, obtains time series measurement data of different types of monitoring instruments with high temporal and spatial correlation, so as to establish a graph structure. Then, the dependence of time dimension and variable dimension of multivariate time series data is captured, and the relationship between further learning and representation of graph attention network is provided. Furthermore, the final feature representation of time series measured data is obtained, and finally the anomaly score is calculated through the final feature representation to detect anomalies. The complementary mutual verification of multiple measuring points of monitoring instruments with various types is realized. The structural integrity and spatial distribution law of concrete dams are fully embodied.

IPC Classes  ?

• E02B 7/08 - Wall dams
• G06F 17/40 - Data acquisition and logging

Abstract

A method for extracting silver from complex lead bullion. The method comprises: extracting silver by means of condensation-crystallization-volatilization, and condensing the complex lead bullion to remove copper and some of other impurities, such as tin, arsenic and antimony, thereby obtaining low-copper lead and copper scum; crystallizing the low-copper lead to mainly enrich silver and bismuth and some of other impurities such as antimony and arsenic, thereby obtaining low-silver lead and high-silver lead; and subjecting the high-silver lead to vacuum volatilization to obtain silver bullion and lead bullion. In the method, silver is extracted by means of condensation-crystallization-volatilization, enriched by means of crystallization, and separated from lead for refining, such that the recovery period of silver is shortened by 30-50% compared with a traditional method, and the energy consumption is reduced by 10-40%.

IPC Classes  ?

• C22B 11/02 - Obtaining noble metals by dry processes
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
• C22B 13/06 - Refining
• C22B 13/02 - Obtaining lead by dry processes

Abstract

A fire refining method for complex lead bullion, belonging to the technical field of nonferrous metallurgy. The method comprises: condensing complex lead bullion, so as to obtain low-copper lead and copper dross I; crystallizing the obtained low-copper lead to remove silver and bismuth, so as to obtain low-silver lead and high-silver lead; adding sulfur to the obtained low-silver lead to deeply remove copper, so as to obtain copper-removed lead and copper dross II; and removing arsenic, antimony and tin from the obtained copper-removed lead via an alkaline method, so as to obtain refined lead and arsenic-antimony-tin slag. By using the ''condensation-crystallization-slagging'' method for refining lead, the present invention changes traditional six refining steps into four refining steps, where the lead refining period is shortened by 10%-30%, the silver recovery period is 20%-30% shorter than those in traditional methods, the energy consumption is reduced by 10-20% and the quantity of reagents is reduced by 30%-60%, thereby allowing for significant economic benefits and industrial application.

IPC Classes  ?

• C22B 13/10 - Separating metals from lead by crystallising, e.g. by Pattison process

Abstract

Disclosed in the present application are a method for preparing a porous carbon material by means of red mud modification and the use of the porous carbon material. The method comprises: subjecting red mud to drying, grinding, acid leaching, washing, filtering and washing to obtain a neutral red mud slurry, crushing and carbonizing waste plastic bottles, mixing same with the red mud slurry, performing magnetic stirring to realize thorough mixing, and drying and activating the formed red mud-carbon material mixture, so as to obtain a porous carbon material. In the present application, by means of simple carbonization and activation methods, industrial solid waste, i.e., red mud, and plastic are converted into an adsorptive material, coordinated gas-solid treatment is achieved, and a new idea is provided for resource utilization of the red mud; compared with a traditional adsorbent, the porous carbon material, which is prepared from carbonized plastic doped with red mud, in the present application has a better pore structure and selectivity; moreover, PFCs can be enriched into a high-concentration gas after adsorption-desorption, and a certain economic value is obtained, such that environment-friendly utilization of waste from the aluminum industry is achieved, the environment treatment cost is reduced, and the aims of pollution reduction, carbon reduction and synergistic interaction are achieved.

IPC Classes  ?

• C01B 32/324 - Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents

Abstract

The present disclosure relates to a device and method for recovering arsenic and gallium. A closed furnace body is in communication with a vacuuming pipe, and the vacuuming pipe is connected to a vacuuming mechanism. The closed furnace body includes a first furnace body, a second furnace body and a third furnace body. A first heating mechanism and a graphite crucible are arranged inside the first furnace body, the first heating mechanism being used for heating the graphite crucible. A first collection cylinder is in communication with a second collection cylinder. The device for recovering arsenic and gallium of the present disclosure is arranged with a structure for realizing directional condensation of gallium arsenide clusters and arsenic vapor, respectively, to realize high-purity recovery of arsenic and gallium.

IPC Classes  ?

• C22B 58/00 - Obtaining gallium or indium
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 9/04 - Refining by applying a vacuum

Abstract

233; after the filter residues are dried, carrying out pyrolysis at 300-600°C to volatilize mercury for condensation and recovery; and mixing the waste residues from which arsenic and mercury are removed with biomass at a mass ratio of 1:1 to 1:5 and crushing same, and carrying out soilization composting treatment. A device for completing the method comprises an arsenic recovery unit, a mercury recovery unit and a soilization treatment unit. The method and the device of the present invention can implement full resource utilization of arsenic- and mercury-containing waste residues, involves simple operations, and has high treatment efficiency and remarkable economic benefits and social benefits.

IPC Classes  ?

• B09B 3/70 - Chemical treatment, e.g. pH adjustment or oxidation

Abstract

The present invention provides an asymmetric laminated sodium-based composite solid electrolyte and a preparation method therefor, and a battery. The composite solid electrolyte comprises a first composite solid electrolyte layer adjacent to a positive electrode, and a second composite solid electrolyte layer provided between the first composite solid electrolyte layer and a negative electrode, wherein the first composite solid electrolyte layer comprises a polymer matrix, an inorganic filler, a sodium salt and a plasticizer; and the second composite solid electrolyte layer comprises a polymer matrix, an inorganic filler, a sodium salt, a plasticizer and a conductive agent, the conductive agent accounting for 1-10% of the mass of the second composite solid electrolyte layer. The negative electrode side of the composite solid electrolyte of the present invention has an ion/electron mixed conduction characteristic, such that the interface contact between the negative electrode and the solid electrolyte can be improved, locally gathered charges on the interface of the negative electrode side can be released, sodium ions can be quickly transported and uniformly deposited, and high interface stability and high long-period charge/discharge performance of the negative electrode side of a sodium-ion battery can be achieved.

IPC Classes  ?

• H01M 10/056 - Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes

Abstract

An asymmetric sodium-based solid-state composite electrolyte includes a first solid-state composite electrolyte layer and a second composite electrolyte layer obtained by laminated coating method. Both the two solid-state composite electrolyte layers include a polymer matrix, an inorganic filler, a sodium salt and a plasticizer, the difference is the electron conductive agent added with the mass ratio ranges from 1 wt. %˜10 wt. % into the second solid-state composite electrolyte layer. In a battery assembled with the asymmetric sodium-based solid-state composite electrolyte, the first solid-state composite electrolyte layer is contiguous with a positive electrode, and the second solid-state composite electrolyte layer is disposed between the first solid-state composite electrolyte layer and a negative electrode.

IPC Classes  ?

• H01M 10/0565 - Polymeric materials, e.g. gel-type or solid-type
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• H01M 50/403 - Manufacturing processes of separators, membranes or diaphragms
• H01M 50/414 - Synthetic resins, e.g. .thermoplastics or thermosetting resins
• H01M 50/451 - Separators, membranes or diaphragms characterised by the material having a layered structure comprising layers of only organic material and layers containing inorganic material

Abstract

Provided are a vacuum distillation furnace, and a method for preparing high-purity copper particles. In view of the fact that high-purity copper prepared by the traditional method in the current industrial production has an unsatisfactory purity, a high impurity content, and a complicated composition, a vacuum distillation method is adopted. During the vacuum distillation method, most of valuable metals in a copper matrix are volatilized and enter into a gas phase, such that the metals are separated from the copper matrix, thereby allowing the purification of copper; and copper powder particles volatilized to a condensation plate have a smooth surface and a purity of 5 N grade or more.

IPC Classes  ?

• B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
• B01D 3/10 - Vacuum distillation
• B22F 1/05 - Metallic powder characterised by the size or surface area of the particles

Abstract

Disclosed is a method for removing impurity mercury from crude selenium. The method includes: mixing a vulcanizing agent with a crude selenium slag that is crushed to not more than 200 mesh uniformly, and performing briquetting to obtain a mixed material; adding the mixed material into a sealed furnace, and subjecting the mixed material to vulcanization by heating under an inert atmosphere to obtain a vulcanized selenium; subjecting the vulcanized selenium to primary vacuum distillation, such that selenium is converted into a gas phase and collected in a form of a volatile, and generated mercury sulfide and valuable elements are enriched in a resulting residue; and subjecting the selenium to secondary distillation to further remove mercury.

IPC Classes  ?

• C01B 19/02 - Elemental selenium or tellurium
• B01D 3/10 - Vacuum distillation
• B01D 3/14 - Fractional distillation

Abstract

The present invention belongs to the technical field of magnesium metal vacuum smelting, and particularly relates to a method for smelting magnesium by means of dolomite vacuum carbon thermal reduction. In the present invention, a mixed powder of dolomite and coking coal is pressed to obtain a formed body; under a vacuum condition, the formed body is heated to be directly subjected to a carbon thermal reduction reaction, and the obtained reduced steam is condensed to obtain crystallized magnesium, wherein the temperature rise rate of heating is less than or equal to 12 K/min; and the heat preservation temperature of the carbon thermal reduction reaction is greater than or equal to 1400 K, and the heat preservation time is less than or equal to 2 h. In the method provided in the present invention, no auxiliary material needs to be added to the raw materials, such that the production cost can be effectively reduced; in addition, the present invention aims at a formed body obtained from dolomite and coking coal, and by controlling the temperature rise rate of heating to be less than or equal to 12 K/min, heat preservation coking is not needed, and the carbon thermal reduction reaction can be directly carried out, thereby effectively reducing energy consumption. Results of the embodiments show that the purity of the crystallized magnesium obtained by the method provided in the present invention is 83.62-91.20%.

IPC Classes  ?

• C22B 26/22 - Obtaining magnesium
• C22B 5/10 - Dry processes by solid carbonaceous reducing agents
• C22B 5/16 - Dry processes with volatilisation or condensation of the metal being produced
• C22B 1/24 - BindingBriquetting

Abstract

A vacuum distillation furnace and a method for manufacturing high-purity copper particles. The vacuum distillation furnace is provided with a volatilization hole plate (15) between a condensation disc (16) and an evaporation chamber, and the hole diameter of the volatilization hole plate (15) is 1-10 mm. The method for manufacturing high-purity copper particles comprises: placing a metallic copper raw material in the evaporation chamber of the vacuum distillation furnace, and carrying out vacuum distillation to obtain high-purity copper particles on the condensation disc (16), wherein the vacuum degree of vacuum distillation is 0.1-100 Pa, the temperature of vacuum distillation is 1100-1800°C, and the particle size of the high-purity copper particles is 1-100 μm. By means of a vacuum distillation method, high-purity copper condensate above 5N level can be obtained, and copper powder particles are enriched and collected; the method shortens the process flow, does not require waste liquid treatment, and has the characteristics of low costs and no pollution.

IPC Classes  ?

• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
• C22B 9/04 - Refining by applying a vacuum
• C22B 15/14 - Refining
• B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material

Abstract

The present application relates to the field of wastewater treatment technology, and in particular, to a plastic-carbon material based on waste plastic reuse, a method for preparing same, and use thereof. The method comprises the following steps: mixing a treated waste plastic particle with ferric trichloride, and after adding water, lyophilizing the mixture; and pyrolyzing the lyophilized mixture to give the plastic-carbon material. The waste plastic particle is at least one of polyethylene, polypropylene, polyethylene terephthalate, and polymethyl methacrylate. The method features ease to operate, fewer procedures, cost-efficiency, high yield, and good bisphenol A adsorption performance, and avoids the use of toxic reagents or organic solvents, thus achieving waste plastic reuse and environment conservation.

IPC Classes  ?

• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption

Abstract

This invention presents an electrochemical metallurgical technique for extracting metals and sulfur from metal sulfides, offering an adjustable composition and mechanical properties during electrode preparation. The metal sulfide anode, submerged in an electrolyte with a cathode made of materials like titanium, copper, stainless steel, lead, zinc, aluminum or graphite, undergoes electrolysis. This process oxidizes sulfur in the metal sulfide to the anode and releases metal ions into the electrolyte, where they're reduced at the cathode. The method yields metal at the cathode and sulfur at the anode, with minimal environmental impact, low investment, and straightforward process.

IPC Classes  ?

• C25C 7/02 - ElectrodesConnections thereof
• C25C 1/02 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of light metals
• C25C 1/10 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of iron group metals, refractory metals or manganese of chromium or manganese
• C25C 1/12 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
• C25C 1/14 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of tin
• C25C 1/16 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
• C25C 1/18 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of lead
• C25C 1/22 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups

Abstract

A method for treating battery positive electrode material includes: cold plasma treatment of at least part of the battery positive electrode material with carbon layer on the surface to be treated to have active particles doped in the carbon layer, where the doping amount is not less than 50 ppm (Part per million). At least part of the surface of the positive electrode material of the battery contains a carbon layer and at least part of the surface has a rod-like shape. The carbon layer is a carbon layer doped with active particles after cold plasma treatment, and a high-sodium ion conductance NaF layer is formed on the surface of the positive electrode material.

IPC Classes  ?

• H01M 4/04 - Processes of manufacture in general
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers

Abstract

The present invention provides a battery positive electrode material and a treatment method therefor, and a battery. The treatment method for a battery positive electrode material comprises: performing a cold plasma treatment on at least part of the battery positive electrode material having a carbon layer on a surface to be treated, so as to dope the carbon layer, wherein the doping amount is not less than 50 ppm. At least part of the surface of the battery positive electrode material contains a carbon layer, and at least part of the surface has a rod-like shape, wherein the carbon layer is a carbon layer which has been subjected to a cold plasma treatment and is doped with active particles, and an NaF layer having high sodium ion conductivity is formed on the surface of the positive electrode material. The treatment method of the present invention can enhance the particle surface energy of the battery positive electrode material, improve interface affinity with an electrolyte, and can result in a positive electrode material having a uniform texture, low porosity, high ionic conductivity and high electronic conductivity.

IPC Classes  ?

• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers

Abstract

A rapid preparation method of transition metal borides includes steps of: using a tungsten rod as the cathode, and a block mixture of boron powder and metal oxide as the anode, the block mixture and the tungsten rod are placed in an plasma device; the plasma device is evacuated, and then filled with a buffer gas and an electric arc is started to obtain a transition metal boride. The present disclosure adopts the direct current arc plasma method with the advantages of simple operation, low cost, environmental friendliness and controllable reaction atmosphere to prepare the transition metal boride, the preparation process is simple, the preparation process is fast, and the environment will not be affected.

IPC Classes  ?

• C01B 35/04 - Metal borides

Abstract

The present invention relates to a rapid preparation method for a transition metal boride. The preparation method comprises the steps: according to the method of the present invention, using a tungsten rod as a cathode, using, as an anode, a mixture of boron powder and a metal oxide which is pressed into a block, and placing the blocky mixture and the tungsten rod in an electric arc furnace; and vacuumizing the electric arc furnace, then filling the electric arc furnace with a buffer gas and controlling the electric arc furnace to ignite an arc, controlling, upon igniting the blocky mixture, the electric arc furnace to extinguish the arc, and enabling the blocky mixture to continuously burn and react to obtain a transition metal boride. According to the present invention, the transition metal boride is prepared by using a direct-current arc plasma method having the advantages of simple operation, low cost, environmental friendliness, controllable reaction atmosphere and the like, the preparation process is simple, the preparation process is rapid, and no influence is caused to the environment.

IPC Classes  ?

• C01B 35/04 - Metal borides

Abstract

Disclosed in the present invention are a waste plastic combustion pretreatment device and method. The pretreatment device comprises a drying system, a crushing system, a pressurizing system, a gas supply system, a mixing system and an ejection system. The drying system is configured to perform drying treatment on waste plastics. The crushing system is connected to the drying system, and is configured to perform crushing treatment on the waste plastics. The pressurizing system is connected to the crushing system, and is configured to perform pressurizing treatment on the waste plastics. The gas supply system is configured to supply gas. The mixing system is connected to both the pressurizing system and the gas supply system, and is configured to mix the waste plastics with the gas supplied by the gas supply system. The ejection system is connected to the mixing system, and is configured to jointly eject the mixed waste plastics and gas supplied by the gas supply system. Compared with the prior art, the waste plastic combustion pretreatment device and method disclosed in the present invention can combust waste plastics more thoroughly.

IPC Classes  ?

• F23G 7/12 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals of plastics, e.g. rubber
• F23G 5/04 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including pretreatment drying
• F23G 5/033 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including pretreatment comminuting or crushing
• F23G 5/02 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including pretreatment
• F23G 5/44 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels DetailsAccessories

Abstract

A method and a system for identifying a glacial lake outburst debris flow (GLODF) are provided. The method is obtained based on considering induced influences of slopes of channels and particle sizes of source particles on the GLODF. The method not only compensates for deficiencies in identifying the GLODF, but also realizes determination of the GLODF, which provides data basis for disaster prevention and control layout such as monitoring and early warning on a glacial lake and assists preventing and managing disasters caused by the GLODF. Meanwhile, multiple parameters used in the method are easy and convenient to obtain, and the parameters can be directly used on site, which saves engineering cost, improves working efficiency, and has high practical and promotional value in environmental protection and disaster prevention and mitigation.

IPC Classes  ?

• G01N 15/02 - Investigating particle size or size distribution
• G06F 17/11 - Complex mathematical operations for solving equations

Abstract

in vitroin vitro culture systems for producing the stem cells.

IPC Classes  ?

• C12N 5/0735 - Embryonic stem cellsEmbryonic germ cells
• C12N 5/074 - Adult stem cells
• C12N 5/071 - Vertebrate cells or tissues, e.g. human cells or tissues
• A61K 35/48 - Reproductive organs
• C12N 5/00 - Undifferentiated human, animal or plant cells, e.g. cell linesTissuesCultivation or maintenance thereofCulture media therefor

Abstract

44F solution into the solution A at a temperature of 40-60°C while stirring and continuously reacting for 0.2-1 h, then adding a copper sulfate solution and a sodium citrate mixture solution and reacting for 0.5-1 h, carrying out standing treatment for 0.5-1 h, carrying out solid-liquid separation, washing a solid 3-5 times alternately in the order of absolute ethyl alcohol-water-absolute ethyl alcohol, and drying to obtain a solid B; in a protective atmosphere, heating the solid B at a constant rate until the temperature is 500-600°C, and carrying out high-temperature roasting for 0.5-4 h to obtain aluminum-copper alloy powder; and in an air atmosphere, heating the aluminum-copper alloy powder at a constant rate until the temperature is 500-800°C, and carrying out high-temperature roasting for 1-4 h to obtain an Al-Cu@CuO high-temperature phase change heat storage material having a core-shell structure.

IPC Classes  ?

• C09K 5/06 - Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice-versa
• B01J 23/72 - Copper

Abstract

Provided is a recovery method for valuable metals in copper anode slime. By using the recovery method of the disclosure, selenium, copper, tellurium, arsenic, lead, bismuth, and precious metals gold and silver in the copper anode slime are recovered. The method adopts two-step vacuum carbothermal reduction to replace reduction smelting of anode slime and stepwise blowing of noble lead in the traditional pyrometallurgy, and avoids the emission of arsenic-containing soot in the traditional process. The recovered gold-rich residue contains almost no base metals such as lead, bismuth, antimony, and arsenic. After subjecting the gold-rich residue to leaching gold by chlorination and reduction, a gold powder could be obtained therefrom with a lower content of base metals than traditional processes. Therefore, the method greatly reduces the amount of produced slag, shortens the production cycle, and reduces the loss of precious metals in the slag.

IPC Classes  ?

• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 1/06 - Sulfating roasting
• C22B 13/02 - Obtaining lead by dry processes
• C22B 15/00 - Obtaining copper
• C22B 30/04 - Obtaining arsenic
• C22B 30/06 - Obtaining bismuth
• C22B 61/00 - Obtaining metals not elsewhere provided for in this subclass
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals

Abstract

A high-calorific-value combustible solid waste improved calcium magnesium phosphate fertilizer, a preparation method therefor and a use thereof. The improved calcium magnesium phosphate fertilizer is prepared from calcium magnesium phosphate fertilizer raw materials and combustible solid wastes. Conventional coke for preparative combustion is replaced by the combustible solid wastes, and waste recycling is achieved by using the high calorific value of the combustible solid wastes. The preparation method comprises: mixing combustible solid wastes with phosphorite and magnesium silicate minerals, carrying out pyrolysis treatment by using a rotary furnace, carrying out negative-pressure cooling on a mixed melt, and then drying and grinding to obtain a calcium magnesium phosphate fertilizer, or using combustible solid wastes as fuel, and mixing ash generated after combustion into the calcium magnesium phosphate fertilizer in a specific proportion. The improved calcium magnesium phosphate fertilizer is combined with combustible solid waste ash, so that the improved calcium magnesium phosphate fertilizer is rich in a large amount of inorganic and organic nutrient elements, the nutrient elements of the fertilizer are richer, and fertilizer efficiency is better; and on the basis of improving the fertilizer efficiency, waste recycling is realized, costs are reduced, and obvious economic benefits are achieved.

IPC Classes  ?

• C05G 1/00 - Mixtures of fertilisers covered individually by different subclasses of class
• C05G 5/10 - Solid or semi-solid fertilisers, e.g. powders

Abstract

222 sequestration.

IPC Classes  ?

• C01B 32/55 - Solidifying

Abstract

A sesquiterpenoid derivative and use thereof in preparing a broad-spectrum antiviral drug provided. The sesquiterpenoid derivative can stimulate heterogeneous nuclear ribonucleoprotein A2/B1, activate the cell signal pathway of TANK-binding kinase 1-interferon regulatory factor 3, and increase the expression and secretion of endogenous type I interferon. As a result, it can inhibiting various viruses and can be used as a broad-spectrum antiviral drug for preventing or treating various viral infectious diseases and symptoms, including Covid-19, vesicular stomatitis virus VSV-G, AIDS virus, hepatitis C virus, Japanese encephalitis virus, influenza virus, poliovirus, Coxsackie virus, dengue virus, rotavirus, tobacco mosaic virus, measles virus, mumps virus, Ebola virus, Marburg virus, herpes virus and adenovirus. Sesquiterpenoid derivatives can be made as a raw material into oral dosage form such as tablet, capsule and dripping pill, or clinically acceptable pharmaceutical preparation such as inhalant and injection.

IPC Classes  ?

• C07D 493/10 - Spiro-condensed systems
• A61K 31/35 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
• A61P 31/14 - Antivirals for RNA viruses

Abstract

A method for enhancing weathering of coal gangue to form soil by using medium and low temperature waste heat. The method is implemented by means of the following steps: (1) hot water or water at a natural temperature is introduced into a coal gangue pile for leaching and the coal gangue pile is then baked with flue gas, coal gangue mineral particles undergo water absorption and thermal expansion, and silicate minerals are dissolved out and reconstructed; (2) after hot water treatment, the coal gangue is allowed for standing, the water is discharged, the coal gangue is cooled, oxygen enters mineral gaps, the mineral particles undergo water loss, cooling, and shrinkage, sulfide minerals are oxidized, and the particles are crushed to expose activated crystal faces; (3) steps 1 and 2 are repeated until the mineral particles are pulverized and weakened, and the coal gangue particle size is reconstructed; and (4) the fine sand content in the coal gangue is increased, the capacities of preservation of soil moisture and preservation of soil fertility are enhanced, and the treatment is completed. The method promotes coal gangue pulverization and weakening by using medium and low temperature waste heat which is difficult to be used by coal production enterprises, to accelerate weathering of coal gangue to form soil, thereby realizing resource recycling of coal gangue.

IPC Classes  ?

• B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
• B09B 3/70 - Chemical treatment, e.g. pH adjustment or oxidation
• C01B 33/40 - Clays
• B02C 19/18 - Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating

Abstract

A UAV surface coating includes at least a bonding layer, an antioxidant layer, an oxygen-blocking propagation layer and a heat-insulation cooling layer. The coating is fabricated on a surface of a UAV machine body or covers on the surface of the UAV machine body through a composite material matrix. The UAV machine body is made of lightweight material, and the composite material matrix includes a resin-based composite matrix and a ceramic-based composite matrix. Wherein, a thickness of the bonding layer is from 20 μm to 200 μm, a thickness of the oxygen-blocking propagation layer is from 20 μm to 200 μm, and a thickness of the heat-insulation cooling layer is from 80 μm to 1000 μm.

IPC Classes  ?

• C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
• C04B 35/80 - Fibres, filaments, whiskers, platelets, or the like
• C04B 35/83 - Carbon fibres in a carbon matrix
• C04B 41/45 - Coating or impregnating
• C04B 41/50 - Coating or impregnating with inorganic materials
• C04B 41/51 - Metallising
• C04B 41/52 - Multiple coating or impregnating
• C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
• C23C 4/11 - Oxides
• C23C 14/20 - Metallic material, boron or silicon on organic substrates
• C23C 14/30 - Vacuum evaporation by wave energy or particle radiation by electron bombardment
• C23C 14/58 - After-treatment
• C23C 24/04 - Impact or kinetic deposition of particles

Abstract

An sgRNA for treating Duchenne muscular dystrophy by the activation of utrophin, and a use. The sgRNA is an sgRNA capable of activating the transcription and translation expression of human or mouse utrophin; and the DNA sequence of the sgRNA is as represented by SEQ ID NO. 1-SEQ ID NO. 20 or SEQ ID NO. 21-SEQ ID NO. 39. By means of sgRNAs targeting endogenous utrophin, the sgRNAs can efficiently activate the transcription and translation expression of human and mouse utrophin, thus providing a therapeutic option for the treatment of Duchenne muscular dystrophy.

IPC Classes  ?

• C12N 15/113 - Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides
• A61K 48/00 - Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseasesGene therapy
• A61K 38/46 - Hydrolases (3)
• A61P 21/00 - Drugs for disorders of the muscular or neuromuscular system

Abstract

Provided in the present invention are a chemiluminescent reagent for detecting mercaptan, a synthesis method and the use, belonging to the technical field of small-molecular chemiluminescent probes. The present invention comprises a substrate chromene skeleton which specifically undergoes a "click" nucleophilic reaction with mercaptan and a modified adamantane-dioxetane (Schaap's) type chemiluminescent group. A chemiluminescent probe in the present invention can be used for in-vivo and in-vitro mercaptan (RSH) detection, involving detection and imaging of mercaptan (RSH) in biological specimens, such as tumor cells, animal living bodies and cancer tissue specimens. The chemiluminescent probe in the present invention has the characteristics of high sensitivity and high specificity, and is an important technical breakthrough.

IPC Classes  ?

• C07D 407/12 - Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a chain containing hetero atoms as chain links
• C09K 11/06 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing organic luminescent materials
• G01N 21/64 - FluorescencePhosphorescence

Abstract

Provides is a method for denitration of carbothermally reduced iron-containing nonferrous metal smelting slag mixed with advanced oxidizer. In the method, the iron-containing smelting slag is subjected to carbothermal reduction, such that metals or metal oxides in the smelting slag are reduced and transformed into active catalysts which could activate hydrogen peroxide to generate free radicals. Hydrogen peroxide is catalytically decomposed, generating ·OH free radicals, and ·OH free radicals generated further oxidize NOx. The reactions are performed at ambient temperature

IPC Classes  ?

• C22B 7/04 - Working-up slag
• C22B 5/10 - Dry processes by solid carbonaceous reducing agents

Abstract

A method for preparing a sodium super ionic conductor solid electrolyte by low-dimensional crystallization belongs to a field of energy materials. The method is based on the theory of negative ion coordination polyhedron growth unit, and uses low-temperature plasma as a protective gas of a spray drying equipment. While evaporating the solvent in a sodium super ionic conductor solid electrolyte precursor slurry, plasma active groups modify the particle surface of the sodium super ionic conductor solid electrolyte precursor particles in-situ. A free space dimension of crystal growth in the crystallization process is reduced, and directional growth of crystals in the solid phase sintering process is induced. Secondly, the dispersion stability of the sodium super ionic conductor solid electrolyte precursor particles is improved. Compared with the traditional high-temperature solid-state sintering process, the method has the advantages of fast crystallization speed, high crystal purity and integrity, good compactness, and uniform particles.

IPC Classes  ?

• H01M 10/0562 - Solid materials

Abstract

Disclosed in the present invention is a method for preparing a sodium superionic conductor type solid electrolyte by means of low-dimensional crystallization, which method belongs to the field of energy materials. In the present invention, based on the anion coordination polyhedron growth unit theory, low-temperature plasma is used as a protective gas of a spray-drying device, and plasma active groups modify the surfaces of sodium superionic conductor type solid electrolyte precursor particles in situ while a sodium superionic conductor type solid electrolyte precursor slurry is being evaporated, such that the free space dimensionality of crystal growth during the process of crystallization is reduced, and the directional growth of crystals during the process of solid-phase sintering is induced. Secondly, the dispersion stability of the sodium superionic conductor type solid electrolyte precursor particles is improved. Compared with a traditional high-temperature solid-phase sintering process, the method has the advantages of a fast crystallization speed, high levels of crystal purity and integrity, good compactness, uniform particles, etc. The method of the invention has a short production period and a low cost, can be commercialized on a large scale, and further achieves the commercial application of the solid electrolyte.

IPC Classes  ?

• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• C01B 25/16 - Oxyacids of phosphorusSalts thereof

Abstract

A targeted oxidizing solvent for regenerating a waste lithium-ion positive electrode material, and the use thereof. The targeted oxidizing solvent is composed of sodium methylene bis-naphthalene sulfonate and tetrahydronaphthalene in a mass-volume ratio of 0.33-0.45 g/ml. The targeted oxidizing solvent can be used for regenerating a waste lithium-ion positive electrode material. The targeted oxidizing solvent can not only uniformly disperse insoluble waste lithium-ion positive electrode material in a solution, but also does not damage the structure of the waste lithium-ion positive electrode material; in addition, since sodium methylene bis-naphthalene sulfonate can perfectly combine with an alkyl lithium compound / a phenyl lithium compound, such that targeted supplementation of lithium ions can be realized, thereby realizing the repair of structural defects present in a waste lithium-ion positive electrode material; and the targeted oxidizing solvent can be used for replacing a deep eutectic solvent which is more expensive, and only non-toxic gases such as carbon dioxide are released during the whole process, which is more environmentally friendly.

IPC Classes  ?

• H01M 10/54 - Reclaiming serviceable parts of waste accumulators

Abstract

An apparatus and method for preparing high-purity spherical magnesium and/or high-purity magnesium powder are provided. The apparatus includes a vertical furnace body, a heating zone, and a condensing zone, where a periphery of the condensing zone is provided with a first thermal insulation device and a second thermal insulation device sequentially from bottom to top, and each of the first thermal insulation device and the second thermal insulation device is removably arranged; the periphery of the condensing zone is further provided with a liquid cooling device; a gas inlet and a gas outlet are formed in the condensing zone; and an inner wall of the condensing zone is provided with an arrangement structure configured to arrange a collection device. A heating temperature of a material and condensation conditions in the condensing zone are controlled to make an evaporated magnesium vapor condensed on the collection device in the condensing zone.

IPC Classes  ?

• B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
• B22F 9/06 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material

Abstract

The present disclosure discloses an application of cuprous sulfide in a recovery of Au (III) from aqueous solutions, which relates to the fields of hydrometallurgy and precious metal recovery. The method of the present disclosure uses cuprous sulfide nanoparticles to recover Au (III) from aqueous solution, and undergoes gold adsorption under mechanical stirring. The method described in the present disclosure can efficiently recover Au (III) from aqueous solutions, has good recovery effects on Au (III) from acidic waste liquid, and has the advantages of energy conservation, environmental protection, and low cost.

IPC Classes  ?

• C22B 11/00 - Obtaining noble metals
• B01D 15/08 - Selective adsorption, e.g. chromatography
• B01J 20/02 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching

Abstract

A circular RNA, a vector, and a use of the vector. The circular RNA comprises an antisense sequence which may specifically bind to a target RNA by means of complementary base pairing, and a 5' connecting sequence and a 3' connecting sequence connected to the two sides of the antisense sequence; the 5' connecting sequence may form a stem-loop structure with the 3' connecting sequence by means of complementary pairing. The vector comprises the circular RNA, a twister ribozyme connected to the 3' connecting sequence, a twister ribozyme connected to the 5' connecting sequence, a promoter and an expression vector. The antisense sequence in the circular RNA specifically binds to precursor messenger mRNA, so as to inhibit the entry of a splicing factor and thereby regulate an RNA splicing process; this may be used for regulating exon skipping at the RNA level, thereby excising pathogenic exons to correct pathogenic mutations, and may be applied to the preparation of a drug for regulating exon skipping, and the preparation of a drug for treating a disease caused by genetic mutations.

IPC Classes  ?

• C12N 15/113 - Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides
• A61K 31/7105 - Natural ribonucleic acids, i.e. containing only riboses attached to adenine, guanine, cytosine or uracil and having 3'-5' phosphodiester links
• A61P 21/04 - Drugs for disorders of the muscular or neuromuscular system for myasthenia gravis

Abstract

Disclosed in the present invention are preparation of a combination of stem cells and a hydrogel as a biomaterial, and the use of the combination in spinal cord injuries. The preparation comprises the following steps: preparing methacrylate gelatin (GelMA) and hyaluronic acid methacryloyl (HAMA); preparing a hydrogel solution, combining mesenchymal stem cells and/or neuroepithelial stem cells subjected to a standard culture, and wrapping the cells in the prepared hydrogel to obtain stem cell-loaded hydrogel or hydrogel microspheres; and transplanting the stem cell-loaded hydrogel or hydrogel microspheres at the site of a spinal cord injury for treatment, and evaluating the effect. The combination of the present invention is used for repairing spinal cord injuries, uses the biomaterial, and has a low immunogenicity, good cell biocompatibility and certain biological functions. After transplantation, the combination can reduce the excessive aggregation of astrocytes after a spinal cord injury, reduce the formation of glial scars, improves bladder and motor function, and can promote the regeneration and repair of nerves after spinal cord injuries, further promoting the behavioral recovery of animals with spinal cord injuries.

IPC Classes  ?

• A61K 35/30 - NervesBrainEyesCorneal cellsCerebrospinal fluidNeuronal stem cellsNeuronal precursor cellsGlial cellsOligodendrocytesSchwann cellsAstrogliaAstrocytesChoroid plexusSpinal cord tissue
• A61K 9/16 - AgglomeratesGranulatesMicrobeadlets
• A61K 47/36 - PolysaccharidesDerivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
• A61P 25/00 - Drugs for disorders of the nervous system
• A61K 35/28 - Bone marrowHaematopoietic stem cellsMesenchymal stem cells of any origin, e.g. adipose-derived stem cells

Abstract

The titanium-containing oxide slag, low-purity silicon and slagging fluxes are subject to reduction smelting together, and a bulk Si—Ti intermediate alloy is obtained by slag-metal separation; the obtained bulk Si—Ti intermediate alloy is crushed into Si—Ti intermediate alloy particles; and the obtained Si—Ti intermediate alloy particles are used as an anode, metallic molybdenum or metallic nickel as a cathode, metallic titanium as a reference electrode, and NaCl—KCl—NaF together with small amounts of Na3TiF6 or K3TiF6 as a molten salt, to carry out the electrolysis under a high-purity argon atmosphere at a temperature of 973 K. Ti in the Si—Ti intermediate alloy particles dissolved at the anode and deposited at the cathode, while Si in the Si—Ti intermediate alloy particles fell off from the anode as metallic silicon powder.

IPC Classes  ?

• C25C 3/28 - Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium of titanium
• C22B 34/12 - Obtaining titanium

Abstract

A method for determining a consistency coefficient of a power-law cement grout includes: determining a water-cement ratio of the power-law cement grout; according to engineering practice requirements, determining a time required to determine the consistency coefficient of the power-law cement grout; and obtaining the consistency coefficient of the power-law cement grout. The method is accurate and reliable, requires less calculation, etc.; and has very high practical value and popularization value in environmental protection and ecological restoration.

IPC Classes  ?

• C04B 7/36 - Manufacture of hydraulic cements in general

Abstract

A method for monitoring mechanochemical activation of metal powders in dynamic electrochemical environment and a device thereof are provided. The method includes constructing a dynamic testing environment in an electrochemical cell, using a three-electrode system, and collecting data from an external electrochemical workstation. The three-electrode system is composed of the working metal plate, the reference electrode, and the platinum electrode. The dynamic testing environment includes small load impacts and changes in pH and composition of the solution. Under the premise of simulating the production environment of the mechanical plating and the water-based metal coating material, the monitoring method described in the present disclosure cooperates with an electrochemical workstation for OCPT testing to achieve the monitoring of mechanochemical activation of metal powders in dynamic electrochemical environment.

IPC Classes  ?

• G01N 27/30 - Electrodes, e.g. test electrodesHalf-cells
• G01N 27/403 - Cells and electrode assemblies
• G01N 27/414 - Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
• G01N 27/416 - Systems
• G01N 33/208 - Coatings, e.g. platings
• G01N 17/02 - Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement

Abstract

A method for determining a three-dimensional tortuosity of a loose and broken rock-soil mass, includes the following steps: a particle grading curve of the loose and broken rock-soil mass is obtained by utilizing a particle size analysis, and followed by calculating an equivalent particle size and an average particle size; a porosity of the loose and broken rock-soil mass is obtained by utilizing a moisture content test, a density test, and a specific gravity test; the three-dimensional tortuosity of the loose and broken rock-soil mass is obtained by utilizing the equivalent particle size, the average particle size and the porosity of the loose and broken rock-soil mass. The method has the advantages of simple logic, accuracy and reliability, simple and fast parameter determination, and has high practical value and promotion value in the field of environmental protection and ecological restoration technology.

IPC Classes  ?

• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
• G01N 33/24 - Earth materials

Abstract

A nonlinear oxygen-enriched injection method based on chaotic mapping and electronic device is disclosed, including: obtaining a chaotic gas injection volume corresponding to a current speed change period according to a chaotic mapping value corresponding to the current speed change period and a peak gas injection volume in an oxygen-enriched injection process; determining a rotational speed of a fan blade in a fan component corresponding to the current speed change period according to the chaotic gas injection volume; updating a rotational speed of a direct current (DC) motor in the fan component corresponding to the current speed change period according to the rotational speed of the fan blade in the fan component, and driving the fan blade to rotate according to an updated rotational speed of the DC motor, so as to update an air output of the fan component. The above operations are repeated until a last stage.

IPC Classes  ?

• C22B 9/05 - Refining by treating with gases, e.g. gas flushing

Abstract

A green and efficient refining method for complex crude tins, which belongs to the technical field of pyrometallurgy of non-ferrous metals. The method comprises: subjecting a crude tin melt obtained by reduction smelting to a condensation operation twice for iron and arsenic removal, combining produced tin B and condensation residues, and feeding same into a centrifugal machine for an iron and arsenic removal operation; combining a crude tin melt produced by the second condensation operation and a crude tin melt produced by the iron and arsenic removal operation in the centrifugal machine, and subjecting same to selective oxidation to remove copper, arsenic, nickel and antimony; subjecting the treated crude tin melt to continuous crystallization to remove lead, bismuth and silver; or subjecting the treated crude tin melt to continuous crystallization to remove lead, bismuth and silver; and subjecting the treated crude tin melt to vacuum volatilization to deeply remove lead and bismuth. The whole process is safe and controllable, and has high adaptability to raw materials; crude tins with different tin-containing components can all be effectively treated, the direct recovery rate of tin is high, the amount of generated waste residues is small, and the process is green and environmentally friendly; and refined tins meeting various grade standards prescribed in GB/T728-2020 can be obtained by selecting different processes.

IPC Classes  ?

• C22B 25/08 - Refining
• C22B 30/02 - Obtaining antimony
• C22B 30/04 - Obtaining arsenic
• C22B 1/00 - Preliminary treatment of ores or scrap
• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
• C22B 9/04 - Refining by applying a vacuum
• C22B 15/00 - Obtaining copper
• C22B 23/02 - Obtaining nickel or cobalt by dry processes

Abstract

A method, device, system, and storage medium for tracking a moving target are provided. The method uses three-dimensional radar observation data to construct a state vector and a motion model of the moving target, thereby to construct a state equation and an observation equation for achieving filtering and tracking within a linear Gaussian framework. The disclosure is also suitable for a moving target in a two-dimensional scene with a distance and an azimuth, and the disclosure use a two-dimensional observation vector to construct a dynamic system to achieving tracking of the moving target. The disclosure can be used in radar systems containing Doppler measurements, and tracking of moving targets can be implemented by performing dimension-expansion processing on observation equations.

IPC Classes  ?

• G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
• G01S 13/58 - Velocity or trajectory determination systemsSense-of-movement determination systems
• G01S 13/66 - Radar-tracking systemsAnalogous systems