381results about How to "Increase the proportion" patented technology

The invention belongs to the technical field of distributed energy storage control, and discloses an optimized operation method and system for a multi-network-constructed energy storage system, and the method comprises the steps: carrying out the equivalence of the multi-network-constructed energy storage system, and obtaining an equivalent energy storage system; wherein the equivalent energy storage system comprises an isomorphic network-following converter, an equivalent impedance R and an ideal voltage source which are sequentially connected in series; based on the equivalent energy storage system, obtaining a small signal stability boundary condition by adopting a Routh criterion; and taking the minimum operation cost as an objective function, solving the objective function under operation constraints including small signal stability boundary conditions, and obtaining J and D of each network construction type converter at different moments, so that each network construction type converter operates under the corresponding J and D. The method is suitable for optimized operation configuration of an energy storage system comprising a plurality of network following-constructing converters, and can effectively promote advantage complementation of renewable energy sources and energy storage, thereby improving system stability and operation economy.

The invention discloses a lithium iron phosphate battery. The lithium iron phosphate battery comprises a positive electrode, a negative electrode, an isolating membrane and an electrolyte, a main material of the positive electrode comprises lithium iron phosphate, and a main material of the negative electrode comprises graphite and a silicon-based material; the surface density of the positive electrode is greater than or equal to 23mg / cm < 2 >, and the surface density of the negative electrode is greater than or equal to 7.8 mg The electrolyte comprises a lithium salt, a solvent and an additive, the solvent mainly comprises ethylene carbonate and a micromolecular linear solvent, the additive comprises FEC and a negative electrode film-forming additive, and a negative electrode film-forming agent comprises vinylene carbonate and a lithium salt additive; the mass fraction of the micromolecular linear solvent is 35%-60%, the mass fraction of the fluoroethylene carbonate is M, the mass fraction of the silicon element in the negative electrode layer is W1, M is greater than or equal to 2% and less than or equal to 2 * W1, and the mass fraction of the negative electrode film-forming agent is 4%-6%. The energy density of the battery cell can be improved and the cycle life and the quick charge capacity of the battery cell are both considered by doping a silicon-based material into the negative electrode, designing a thick electrode and adjusting an electrolyte formula.

The invention discloses a short-term photovoltaic power generation power prediction method adaptive to weather change, which comprises the following steps of: firstly, acquiring meteorological data around a photovoltaic panel and power data of a photovoltaic module, preprocessing the data, and dividing a training set and a test set according to a proportion; according to the method, a Bi LSTM-Attention model based on ISSA optimization is constructed, photovoltaic power generation power prediction is realized by capturing time sequence characteristics and historical information of input data, meanwhile, a mean square error between a predicted value and a true value is calculated to continuously fit the predicted value, prediction model parameters can be updated, model self-learning is realized, and the prediction efficiency is improved. And the accuracy of the short-term photovoltaic power prediction value of the prediction model is further improved. According to the method, the short-term prediction precision of the photovoltaic power generation power under different weather conditions is improved, so that a photovoltaic grid-connected system is helped to respond to the control parameter design of the power grid stability requirement, and the support capability of photovoltaic power generation on the power grid is improved.

The present invention relates to the field of food technology, and in particular to a method for preparing diglyceride and its application. The method comprises the following steps: firstly hydrolyzing the oil and fat under the action of a first lipase, adding a solubilizing agent, and obtaining a hydrolyzate; then mixing the hydrolyzate with glycerol, and performing an esterification reaction with a second lipase; wherein the first lipase is prepared by compounding lipase Lipozyme RM and Antarctic Candida lipase B. The present invention can specifically synthesize 1,3-diglyceride that is beneficial to the cardiovascular system of the body, and has a high yield and good application prospects.

The invention provides a multichannel sound and vibration information fusion speed reducer squeal traceability method, which comprises the following steps of: arranging a plurality of vibration sensors and microphones around a speed reducer, and synchronously acquiring vibration signals and sound signals; converting the multi-channel acoustic vibration signals from a time domain to a frequency domain by adopting short-time Fourier transform and averaging the multi-channel acoustic vibration signals along a time dimension; setting an outburst ratio threshold value to realize howling frequency band screening of the sound spectrum of each channel; summing the screened sound frequency spectrum and vibration frequency spectrum along the channel dimension and carrying out amplitude normalization processing; the processed sound frequency spectrum and the vibration frequency spectrum are multiplied according to corresponding frequency points, and a fusion frequency spectrum of sound and vibration information fusion is obtained; and converting the frequency domain into an order domain to obtain a howling traceability result of the speed reducer. According to the method, after the outburst ratio threshold value is set, professional technicians do not need to analyze data, mutual verification of sound and vibration signals can be achieved, interference of external noise is restrained, fusion of sound and vibration information at the feature level is adopted, and accurate howling traceability can be achieved.

The invention relates to the technical field of battery materials, in particular to a graphite negative electrode material and a preparation method and application thereof. The graphite negative electrode material comprises graphite particles, the average length La of the graphite particles in the alpha-axis direction of microcrystals is larger than or equal to 40 nm, the average thickness Lc of the graphite particles in the c-axis direction of the microcrystals is larger than or equal to 25 nm, and the interlayer spacing d002 ranges from 0.336 nm to 0.338 nm, and the number parameter of the microcrystals contained in each single graphite particle is defined as N = D503 / (La2 * Lc); d50 is the median particle size of the graphite particles, the unit is [mu] m, and the numerical value of N is more than 0 and less than or equal to 0.04. The graphite negative electrode material disclosed by the embodiment of the invention comprises the graphite particles with stable microcrystalline structure, large microcrystalline size and large interlayer spacing, so that the expansion and stress distribution uniformity of the negative electrode material in the circulation process is improved, the diffusion of ions in the graphite particles is facilitated, the consumption of active lithium is reduced, and the service life of the negative electrode material is prolonged. And the dynamic and super-long cycle stability of the graphite negative electrode material is improved.

The invention relates to the technical field of image recognition and processing, and discloses a main network energy storage power station planning system and method based on wind-solar space-time correlation, and the system comprises a data collection and preprocessing module which carries out the cleaning and preprocessing of a data collection and preprocessing module; the wind and light space-time characteristic analysis module is used for researching space-time distribution characteristics and reverse peak regulation characteristics of wind power and photovoltaic output and correlation between the space-time distribution characteristics and the reverse peak regulation characteristics; a modeling and simulation module; the scene generation and screening module is used for generating a typical daily operation scene; and the energy storage technology evaluation module is used for comprehensively evaluating the technical performance of different types of stored energy. According to the method, the spatial-temporal distribution characteristics, the reverse peak regulation characteristics and the correlation of wind power and photovoltaic output are deeply researched, the output spatial-temporal correlation model suitable for large-scale wind and light is constructed, the level of accepting and utilizing renewable energy sources by a power grid is greatly improved, and the effect of remarkably improving the absorption capacity of the power grid to the renewable energy sources is achieved.

The invention provides a sample preparation method for microbiological detection, a sample, a detection method, a kit and application. The method comprises the following steps: a treatment step: taking an in-vitro host cell sample, and treating the in-vitro host cell sample with a host cell lysis reagent and nuclease to degrade host nucleic acid, the treatment being carried out in a liquid with a salt concentration of 10-600mM; a nuclease inactivation step: providing conditions to inactivate the nuclease; and obtaining microbial nucleic acid: extracting total nucleic acid to obtain the sample for detecting the microorganisms. According to the method disclosed by the invention, the interference of the host cell genome on the sample detection sensitivity can be effectively reduced in metagenome sequencing, and effective sequencing data of microorganisms in a detection result is improved, so that the positive detection rate of the microorganisms and the sensitivity of detecting the microorganisms are improved.

The invention provides a lignocellulose straw with high bamboo powder content and a preparation method thereof. The lignocellulose straw comprises a straw body and a protective layer. The green degradable straw with the bamboo powder content as high as 90% can be prepared through the method. According to the method, lignin is used as a main body material, and a three-layer structure of a protective layer, a lignin straw and a protective layer is formed. And the protective layer is a naturally degradable protective film or an environment-friendly coating. The preparation method comprises the following steps: compounding bamboo wood, cellulose, a protective auxiliary agent and the like according to a ratio, then carrying out negative pressure dehydration, manufacturing into a straw by using a coiling machine with a specified size, drying, rapidly immersing the dried straw into a protective agent, then taking out and airing, and finally cutting into the straw with a specified length by using a pipe cutting machine. The straw effectively relieves plastic pollution, meanwhile, the bamboo wood is utilized in a high-efficiency and high-proportion mode to the maximum extent, and the bamboo wood utilization rate is far higher than that of products sold in the current market. The method has great industrial application value.

The invention discloses a carbon-based saline alkali soil remediation agent containing nano bamboo liquid and a preparation method thereof, and relates to the technical field of soil remediation agents, and the carbon-based saline alkali soil remediation agent comprises the following components in parts by weight: 9-13 parts of nano bamboo liquid, 25-35 parts of modified charcoal, 5-8 parts of micro-nano iron tailings, 3-6 parts of red mud and 12-15 parts of bacillus subtilis. According to the carbon-based saline-alkali soil remediation agent containing the nano bamboo liquid and the preparation method thereof, by adding the nano bamboo liquid, harmful substances such as heavy metal ions and organic pollutants in soil can be more effectively adsorbed, and the carbon-based saline-alkali soil remediation agent can also be used as a carrier or a stimulant of microorganisms to promote growth and reproduction of the soil microorganisms; meanwhile, the bamboo liquid is rich in various nutrient elements, the elements are more easily absorbed and utilized by soil after nanocrystallization, and necessary nutrients are provided for plant growth.

The invention belongs to the field of all-solid-state lithium ion battery positive electrode materials, and particularly relates to an amorphous-state high-ion-conductivity positive electrode material, a preparation method and application of the amorphous-state high-ion-conductivity positive electrode material in an all-solid-state lithium ion battery, and the chemical composition general formula of the positive electrode material is LixFeOClFx, xlt; liF and FeOCl raw materials in a corresponding proportion are synthesized by a high-energy ball milling method to obtain the LiF / FeOCl composite material. The material is mainly composed of an amorphous phase and has isotropy, and it is ensured that an efficient and stable ion transmission channel can be constructed under the cold pressing condition. The amorphous high-ionic-conductivity lithium iron oxide chlorine fluorine-based positive electrode material provided by the invention has high ionic conductivity, stable capacity output, good rate capability, excellent machining performance and low-humidity air stability, and is used as an all-solid-state lithium ion battery positive electrode material; meanwhile, the material is low in synthesis raw material cost and simple in synthesis process, and has a good industrial amplification prospect.

The invention belongs to the technical field of battery materials, and discloses a nitrogen-doped asphalt-based hard carbon material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out oxidation treatment on asphalt to obtain oxidized asphalt; carrying out nitrogen doping treatment on the oxidized asphalt to obtain an asphalt hard carbon precursor; carrying out pre-carbonization and carbonization treatment on the asphalt hard carbon precursor to prepare an asphalt-based hard carbon material; a nitrogen-containing compound is used in the nitrogen doping treatment process, and the nitrogen-containing compound comprises pyridyl and / or pyrrolyl, and hydroxyl and / or aldehyde group. According to the preparation method disclosed by the invention, the asphalt is subjected to oxidation treatment, so that the asphalt contains rich oxygen-containing groups (such as hydroxyl and aldehyde group), and pyridine nitrogen (or pyrrole nitrogen) is introduced into the oxidized asphalt through aldol reaction in the nitrogen doping treatment process, so that the capacity and rate capability of the asphalt-based hard carbon material are improved.

The invention discloses low-cost double-network fluorinated silicone rubber and a preparation method thereof, and relates to the technical field of fluorinated silicone rubber. The double-network fluorosilicone rubber comprises the following raw materials: vinyl silicone resin, vinyl fluorosilicone resin, hydrogen-containing fluorosilicone oil, a solubilizing monomer, a multifunctional acrylate monomer, a reinforcing filler, a structured control agent, a free radical thermal initiator, a platinum catalyst and an inhibitor. The double-network fluorosilicone rubber is formed by constructing a carbon-carbon chain network and a siloxane network, the tensile strength, toluene swelling resistance and ATF oil resistance at the high temperature of 150 DEG C of the fluorosilicone rubber are obviously improved, the preparation cost of the fluorosilicone rubber is reduced, and a favorable support is provided for widening the application field of the fluorosilicone rubber.

The invention discloses an optical module which comprises a circuit board, and the circuit board comprises a first metal surface layer, a second metal surface layer and a first metal intermediate layer. The first metal surface layer is provided with golden fingers, the golden fingers are provided with elastic sheets, the golden fingers comprise high-frequency signal golden fingers, and a gap is formed in one side of each golden finger. The first metal middle layer is located below the first metal surface layer, and a first insulation supporting layer is arranged between the first metal middle layer and the first metal surface layer. The first metal intermediate layer in the projection area of the high-frequency signal golden finger does not have the metal layer so as to form a hollow area. The first insulating supporting layer in a projection area on one side of the high-frequency signal golden finger is hollowed out to form a first groove. According to the invention, the hollow area and the first groove increase the impedance of the high-frequency signal golden finger, and reduce the impedance mutation of the high-frequency signal golden finger caused by the connection of the elastic sheet and the high-frequency signal golden finger, thereby guaranteeing the impedance continuity of the high-frequency signal golden finger, and guaranteeing the transmission quality of a high-frequency signal.

The invention relates to an aromatic soluble polymer microneedle as well as a preparation method and application thereof. The preparation method comprises the following steps: adding a zinc acetate hexahydrate aqueous solution and a Tris buffer solution into a eugenol-curcumin mixed ethanol solution to obtain self-assembled carrier-free nanoparticles containing eugenol and curcumin; and dissolving the nano-particles in a soluble hyaluronic acid solution, drying in a microneedle mold, and demolding to obtain the aromatic soluble polymer microneedle. The structure of the aromatic soluble polymer microneedle is that self-assembled carrier-free nanoparticles are wrapped in a soluble hyaluronic acid microneedle. Compared with the prior art, the aromatic soluble polymer microneedle prepared by the invention can overcome skin barrier and quickly absorb moisture and dissolve so as to promote the transdermal absorption effect of active substances; a perfume delivery system is constructed by using the soluble polymer microneedle, so that the biocompatibility is improved, the slow release control capability of the perfume can be effectively enhanced, and a new path is opened up for clinical application of inflammatory diseases.

The invention relates to the technical field of fused salt phase change energy storage materials, and discloses a sodium alginate-assisted graphene-based fused salt phase change energy storage material and a preparation method thereof. The preparation method comprises the following steps: preparing few-layer graphene oxide; dispersing the few-layer graphene oxide and sodium alginate in a saturated or supersaturated sodium chloride solution, adding an inorganic cross-linking agent, and uniformly mixing to obtain composite hydrogel; the composite hydrogel is subjected to freezing and freeze-drying treatment, and composite aerogel is obtained; and carrying out heat treatment on the composite aerogel to obtain the sodium alginate-assisted graphene-based molten salt phase change energy storage material. According to the phase change energy storage material, the graphene oxide and the carbonized sodium alginate carbon skeleton form an aerogel matrix, the stability of a packaging structure is guaranteed, meanwhile, a large number of NaCl crystals are reserved, the proportion of molten salt is increased, the phase change stability is improved, the molten salt is not prone to leakage in the phase change energy storage process, the energy storage performance and the heat energy management efficiency are remarkably improved, and the application prospect is wide. Wide application prospects are realized.

The invention relates to the technical field of water treatment devices, and particularly provides an aerobic granular sludge precipitation screening device which comprises a particle generator, a forced water inlet system, a water outlet system and a sludge discharge system. The continuous flow aerobic granular sludge precipitation screening device has the beneficial effects that the sludge screening strength is improved by improving the water inlet load of the partial continuous flow aerobic granular sludge precipitation screening device; the light flocculent sludge is actively eliminated so as to improve the particle proportion, and controllable discharge of the light flocculent sludge is realized.

The invention relates to the technical field of industrial vision and artificial intelligence, and discloses an aluminum coating formula prediction method and system based on industrial vision and double-model fusion. The method comprises the following steps: acquiring visible light and near-infrared band images of the surface of an aluminum material coating through multispectral image acquisition, identifying a defect area to generate a binary mask, extracting three types of features of color, texture and spectral reflection, and respectively inputting feature vectors into a random forest regression model and a convolutional neural network model to obtain a target image; and dynamically calculating a fusion weight according to the verification set error, and carrying out weighted fusion on the prediction results of the two models to generate a formula component content prediction value. According to the method, the technical problems of low precision, low efficiency and insufficient generalization ability of a traditional aluminum coating formula determination method are solved, and rapid and accurate prediction of the formula is realized.

The production line comprises a preheating furnace, a tubular furnace and a cooling furnace which are connected in sequence, the preheating furnace comprises a first furnace body, a rack, a first feeding pipe, a first discharging pipe, a preheating device and a first driving mechanism, the first furnace body is rotationally connected to the rack, and the second furnace body is rotationally connected to the rack; the two ends of the first furnace body are rotationally connected with the first feeding pipe and the first discharging pipe correspondingly, a first preheating conveying blade is arranged in the first furnace body, a material guiding barrel is arranged in the first preheating conveying blade, a second preheating conveying blade is arranged on the inner side wall of the material guiding barrel, and the preheating device and the first driving mechanism are installed on the rack. The preheating device preheats the first furnace body, and the first driving mechanism drives the first furnace body to rotate. Compared with the prior art, the catalyst carrier has the advantages that preheating and drying can be performed during preparation of the activated carbon, carbonization and activation effects are improved, carbonization and activation processes in the production process of the activated carbon can be effectively controlled, and the catalyst carrier with large aperture and high specific gravity is obtained.

The invention relates to the technical field of green fuel preparation, and discloses a method for preparing green fuel by coupling biomass gasification and combustion, which comprises the following steps: (1) separating N2 from air, taking a part of residual gas as a gasification agent, and taking the other part as combustion gas; (2) carrying out chemical chain gasification on the biomass through steam under the condition of a gasifying agent to obtain H2 and CO2; (3) carrying out chemical looping combustion on the biomass under the conditions of an oxygen carrier and combustion gas to obtain CO2; (4) electrolyzing a part of obtained CO2 by using electric energy obtained by biomass chemical looping combustion to obtain CO; (5) synthesizing N2 and H2 to prepare a green NH3 product; and synthesizing H2, CO2 and CO to prepare a green methanol product. According to the method, a biomass fuel chemical looping power generation and biomass chemical looping gasification coupling technology is applied, a carbon source in biomass is fully utilized, meanwhile, green NH3 and methanol products are prepared, and efficient utilization of resources is achieved.

The invention discloses a stack-in type field sequence pixel circuit and a control method, the stack-in type field sequence pixel circuit comprises a plurality of sub-circuits and pixel electrodes, and the circuit structures of the plurality of sub-circuits are the same; the plurality of sub-circuits are coupled to the same end of the pixel electrode, and the other end of the pixel electrode is coupled to a common signal line; the plurality of sub-circuits are provided with pre-storage capacitors which are used for pre-storage of data signal voltage. The beneficial effects of the invention are that the method achieves the simultaneous stacking of a plurality of frames of data signals through the arrangement of a plurality of sub-circuits, thereby improving the time utilization rate.

The invention discloses a double-curved-surface non-uniform wetting micro-nano structure for strengthening boiling / evaporation heat transfer and a manufacturing method and application, and belongs to the technical field of heat transfer. The structure comprises a substrate and a double-curved-surface three-dimensional super-hydrophilic micro-nano structure array; the substrate has hydrophobicity / super-hydrophobicity; the array is composed of a plurality of upwards-convex hyperboloid three-dimensional super-hydrophilic micro-nano structures. The hyperboloid three-dimensional super-hydrophilic micro-nano structure comprises a convex main body and a top concave cavity; and the side wall of the convex main body and the inner wall of the concave cavity at the top are curved surface structures and are full of super-hydrophilic micro-nano porous structures. The transverse growth space of bubbles generated by boiling is restrained, expansion and combination of the bubbles generated by boiling are restrained, nucleation and separation of the bubbles in a super-hydrophobic area are promoted, the water storage capacity can be increased through a top catenary face, boiling / evaporation liquid supply is enhanced, capillary liquid supply is promoted, and the heat transfer coefficient is increased through combination of a hyperboloid mixed super-wetting three-dimensional structure; and the heat transfer limit is improved by means of the double-curved-surface three-dimensional curved surface pinning effect under the ultrahigh superheat degree by adhering liquid film boiling.

The invention provides a method for preparing a carbon source from kitchen garbage, and belongs to the technical field of kitchen garbage treatment. According to the method, firstly, the kitchen garbage and the fermentation tail water are mixed for fermentation pretreatment, then hydrolytic acidification is performed, and alkali-adding pretreatment can improve the proportion of a denitrification component VFAs in SCOD of fermentation liquor; the total amount of SCOD and C / N can be increased through heating pretreatment; the total amount of VFAs can be increased by enzyme pretreatment, so that the quality of the prepared carbon source is improved. The result of the embodiment shows that the VFAs / SCOD value of the carbon source prepared by the method is between 0.24 and 0.4, the proportion of VFAs is high, and the carbon source belongs to a high-performance carbon source product.

The invention relates to a method for cultivating butter crabs and a method for screening key genes formed by the butter crabs. The method comprises the following steps: a, screening blue crabs cultivated by the butter crabs; b, performing cultivation management; according to the breeding method, blue crabs are independently bred in a crab breeding device, and the crab breeding device comprises a breeding basket body; the sandy layer is laid at the bottom of the breeding basket body; the blowdown device is arranged in the breeding basket body, and water in the sandy layer, excrement and residual feed can be discharged by means of water level pressure generated by the inner side and the outer side of a blowdown chamber. By regulating and controlling the temperature and salinity of seawater, the proportion of the butter crabs in the blue crab breeding process is increased; the pollution discharge device is arranged in the crab breeding device, self-cleaning of the sandy layer is achieved, the stress reaction of crabs is reduced, meanwhile, the self-cleaning sandy layer can allow the crabs to dive in sand, the living state of the crabs in the nature is simulated, meanwhile, the crabs can be prevented from ulcer, and then the breeding success rate of the butter crabs is increased.

The invention provides an Al-Mg-Zn-Mn alloy profile and a preparation method thereof, and relates to the technical field of aluminum alloy processing.The preparation method comprises the following steps that an Al-Mg-Zn-Mn alloy cast ingot is prepared, and the cast ingot contains a primary Al6Mn phase and a primary T-Mg32 (AlZn) 49 phase; performing soaking treatment on the cast ingot; cogging treatment is conducted on the cast ingot obtained after soaking treatment, then extrusion forming is conducted, so that a T-Mg32 (AlZn) 49 phase is redissolved into an aluminum matrix, online quenching is conducted, and an extruded profile is obtained; stretching and straightening the extruded profile; and aging treatment is conducted, specifically, aging treatment is conducted on the stretched and straightened profile, so that the T-Mg32 (AlZn) 49 phase is separated out, and the Al-Mg-Zn-Mn alloy profile is obtained. The content of Mn in the raw materials is increased, the mass percentage content ratio of Zn to Mg is controlled, the proportion of recrystallized grains is increased through high-temperature extrusion forming, and the supersaturation degree of a matrix is improved through online quenching; and after aging treatment, dispersed precipitation of a T phase is promoted, and the obdurability of the aluminum alloy profile is remarkably improved. According to the method, off-line solid solution quenching is not needed, and the Al-Mg-Zn-Mn alloy profile with the large size and the high toughness can be prepared.

The invention belongs to the technical field of spacecraft navigation, and provides a pulsar TOA extraction method based on periodic coincidence optimal estimation. The method comprises five steps of dual-channel detection photon simulation, periodic coincidence analysis, coincidence time window optimization, TOA sequence generation and optimal TOA extraction analysis. The method comprises the following steps: constructing a threshold function by utilizing the periodic characteristics of pulsar signal photons, periodically sliding a time window to carry out coincidence processing, eliminating noise photons, and reserving the signal photons. And optimizing the coincidence time window to improve the noise rejection ratio to more than 90%, generating a TOA measurement sequence, and selecting the minimum TOA measurement value as the optimal estimation from the TOA measurement sequence. According to the method, the pulsar TOA measurement precision can be effectively improved, and especially in a short time and under a small detector area, the method has important significance for an X-ray pulsar navigation system to realize high-precision spacecraft autonomous navigation and positioning.

The invention relates to a video-based two-hand identification method and device, computer equipment, a computer readable storage medium and a computer program product. Comprising the steps of detecting a human body and a hand in frame image data by using a target detection algorithm, and outputting a human body detection frame and a hand detection frame; tracking a human body and a hand in the current video data by using a target tracking algorithm, and outputting a human body tracking frame and a hand tracking frame; fusing the human body detection frame and the human body tracking frame to determine a human body tracking queue; fusing the hand detection frame and the hand tracking frame to determine a hand tracking queue; traversing the human body tracking queue to identify key points, and determining skeleton key points of each human body; and matching the arm key point of each human body with the tracking frame corresponding to each hand to obtain a two-hand recognition result of each human body. By adopting the method, the left hand and the right hand can be distinguished under the condition that the hands are blurred, the two hands can be assigned to specific individuals, and the recognition precision and the recognition efficiency are improved.

The invention belongs to the field of batteries, and particularly relates to a lithium ion battery electrolyte and application thereof. The lithium ion battery electrolyte provided by the invention comprises the following components: an organic solvent, a lithium salt and an additive, the additive comprises a compound with a structure as shown in a formula I and / or a compound with a structure as shown in a formula II. The electrolyte provided by the invention can be used for optimizing SEI membrane components of the lithium ion battery, improving the cycle coulombic efficiency of the lithium ion battery, improving the high-voltage tolerance of an SEI membrane and improving the high-temperature and high-voltage cycle performance of the lithium ion battery. # imgabs0 #

The invention relates to the technical field of backlight modules, and discloses a backlight module and a display device. The optical component containing the red fluorescent powder is arranged in the light emitting direction of the blue light wafer of the backlight module, and the red shift phenomenon of color points of the backlight module is actively caused; meanwhile, quantum dots of a red light excitation wave band are greatly reduced or completely canceled in the quantum film in the light emitting direction of the optical component, and the quantum dot proportion of a green light excitation wave band is increased, so that the color dots are corrected, and the red shift is counteracted; meanwhile, due to the fact that quantum dots of the red light excitation wave band in the quantum film are greatly reduced, the stability of the quantum film is improved, the LED lamp panel can be driven to higher current, the LED light-emitting efficiency is improved, and the overall brightness of the backlight module is improved; and moreover, the color points can be adjusted by adjusting the proportion of the red wave band fluorescent powder, so that different liquid crystal panels can be matched, the composition of the quantum film can be kept unchanged, and the backlight module is more flexible and universal in actual production.

The invention belongs to the technical field of biology, and particularly relates to fibroblast-like macrophages and application thereof in tumor metastasis prediction and prognosis evaluation. According to the invention, tumor focuses are subjected to single cell sequencing, and a cell subset of co-expression collagen genes and macrophage-related genes is found to be remarkably enriched in the tumor focuses of various tumors, and is named as collagen-rich macrophages / fibroblast-like macrophages. The collagen-rich macrophage / fibroblast-like macrophage provided by the invention can be detected in tumor focuses and peripheral blood, can be used as a marker to be applied to prediction, diagnosis and prognosis of various tumors, especially osteosarcoma, and is helpful for timely judging whether tumor cells have chemotherapy drug resistance or not; therefore, a proper treatment strategy can be timely adjusted and given, invalid or low-effect chemotherapy is avoided, other effective treatment strategies are timely adopted, and the lifetime of a patient is prolonged.