441results about How to "Efficient decomposition" patented technology

The invention relates to the technical field of data processing, and discloses a multi-granularity extraction and enhancement method, device and equipment for multi-source heterogeneous data. The method comprises the following steps: performing multi-level feature extraction on a multi-modal data set and original feature parameters to obtain a multi-modal feature set; performing correlation analysis on the multi-modal feature set to obtain a feature correlation matrix and optimized feature representation; performing cross-modal knowledge migration processing on the feature incidence matrix and the optimized feature representation to obtain migration feature parameters; performing dynamic fusion processing on the migration feature parameters to obtain target fusion features; and performing multi-task segmentation processing according to the target fusion features to obtain a plurality of sub-task sequences, performing time sequence enhancement and multi-task fusion analysis on each sub-task sequence to obtain target extraction data, and performing visual display on the target extraction data. According to the method and the device, the efficiency and the accuracy of multi-granularity extraction and enhancement for multi-source heterogeneous data are improved.

The invention relates to the technical field of power distribution network dispatching, in particular to an intelligent dispatching method and system for a power distribution network in an industrial park, and the method comprises the following steps: S1, data collection and preprocessing: collecting the real-time operation data of the power distribution network in the industrial park through an intelligent electric meter, a sensor and Internet of Things equipment; s2, performing real-time load prediction: performing load prediction on the industrial park power distribution network by using the load prediction model; s3, dynamic electric energy quality management: identifying electric energy quality abnormity and potential problems; s4, power supply scheme optimization and scheduling strategy generation: generating an optimal power supply scheme and scheduling strategy; s5, real-time monitoring and feedback: the running state of the power distribution network is monitored in real time; and S6, self-learning and optimization: analyzing historical scheduling data and an actual operation effect, and summarizing a scheduling rule and experience. According to the invention, the optimal power supply scheme is generated, and the economical efficiency and reliability of power supply are ensured.

The invention discloses a cable fault positioning method and system based on reflected wave decomposition and kurtosis sorting, and aims to solve the problem that a cable fault is difficult to detect under a low impedance change rate. The method comprises the steps of transmitting an incident excitation signal to a cable to obtain a first reflection signal in the cable; an improved VMD algorithm is adopted for decomposition to obtain K IMF components, and the IMF with the maximum kurtosis is selected as a second reflection signal; acquiring a time-frequency distribution curve of the second reflected signal by using short-time Fourier transform and frequency spectrum redistribution technologies; and constructing a two-dimensional energy-time curve by extracting an energy value and time under the frequency of the maximum energy amplitude point, and determining a fault position. The system is composed of an incident excitation module, a decomposition module, an STFT-RSP module and a fault positioning output module, and the positioning method is achieved. According to the method, the limitation of a traditional spread spectrum time domain reflection positioning method in cable fault detection is effectively overcome, and an efficient and accurate instructive technology is provided for cable fault positioning and detection.

The invention discloses an automatic quality-supplementing correction method and system for the unbalance amount of a fan, and the method comprises the following steps: collecting geometric parameters and material characteristics in a static state of the fan, and constructing a mechanical distribution model of the fan; the method comprises the following steps: collecting vibration signals and airflow characteristics in real time in a dynamic operation state, calculating the amount of unbalance in operation and decomposing the amount of unbalance into a primary component and a secondary component; on the basis of the unbalance prediction trend, determining a quality supplementing range, carrying out multi-point quality supplementing operation through a dispensing technology, and monitoring a quality supplementing effect by using an optical fiber sensor; and if the residual unbalance amount after quality supplementation still exceeds the standard, real-time compensation adjustment is carried out through the electromagnetic torque regulation and control module. Full-process automatic correction from static state to dynamic state and from quality supplement to fine adjustment is achieved, the method has the advantages of being real-time, accurate and intelligent, vibration and noise in the fan operation process can be effectively reduced, the operation stability of equipment is improved, and the service life of the equipment is prolonged.

The invention discloses a transformer noise detection method based on season trend decomposition and time sequence prediction, and belongs to the technical field of transformer noise anomaly detection. Comprising the following steps: S1, acquiring noise data of a transformer, and preprocessing the noise data; s2, adopting an STL decomposition model to obtain a seasonal component, a trend component and a residual component; s3, performing Transform time sequence prediction on the seasonal components and the trend components to obtain prediction results of the seasonal components and the trend components; s4, performing anomaly detection on prediction results of the seasonal components and the trend components, and outputting a detection result; and S5, carrying out weighted composition on the detection results of all the components, and outputting a diagnosis result. According to the method, the time sequence data of the noise of the transformer substation is decomposed, predicted and subjected to abnormal point detection, and reliable technical support is provided for state monitoring and fault prevention of transformer substation equipment.

The invention discloses a compound enzyme preparation for improving the absorption and utilization rate of a fertilizer and a preparation method thereof, and belongs to the technical field of enzyme preparations. The compound enzyme preparation is prepared from the following components in parts by weight: 100 parts of purified water, 6 to 8 parts of modified cellulase, 10 to 12 parts of immobilized protease, 10 to 12 parts of phosphatase, 10 to 14 parts of urease, 8 to 10 parts of nitrate reductase, 10 to 12 parts of pectinase, 8 to 10 parts of chitinase, 6 to 8 parts of xylanase, 10 to 12 parts of beta-glucosidase, 10 to 12 parts of superoxide dismutase and 4.5 to 6 parts of a microbial agent, the modified cellulase is obtained by chemically modifying cellulase; the immobilized protease is prepared by the following steps: adsorbing activated and coupled modified polylactic acid and a protease solution, crosslinking with glutaraldehyde, filtering, washing and drying. The compound enzyme preparation improves the fertilizer absorption and utilization rate of plants.

The invention discloses a short-term load prediction method considering error compensation and modal decomposition. The short-term load prediction method comprises the following steps: S1, acquiring load data and characteristic data of a power system; s2, carrying out the preliminary decomposition of the load data of the power system based on ICEEMDAN, and obtaining an intrinsic mode function; s3, training a first network model TCN-GRU by taking the intrinsic mode function and the feature data as input to realize initial short-term load initial prediction; s4, comparing the preliminary short-term load prediction result with a target load, constructing an error sequence, and reducing the unpredictability of the error sequence by adopting AVMD to obtain a variational mode function; and S5, training the second network model TCN-GRU by taking the variational mode function as input, and correcting the initial short-term load initial prediction result to obtain a final short-term load prediction result. The problems that in the prior art, a single prediction model is insufficient in precision, and the effect of an error sequence on the aspect of improving the load prediction precision is not fully utilized are solved.

The invention relates to a soil conditioner for saline-alkali land treatment and a preparation method, and belongs to the technical field of soil conditioners. The soil conditioner for saline-alkali land treatment is prepared from a fermented fertilizer, biomass charcoal II, corn straw powder, attapulgite powder, humic acid and a compound microbial agent. The soil conditioner disclosed by the invention can be used for reducing the pH value of soil, reducing salinity, promoting the recovery of organic matters and improving the fertility of the soil, and is beneficial to improving the yield of crops.

The invention belongs to the technical field of biogas production equipment, and particularly relates to a kitchen waste anaerobic digestion efficient treatment system, which comprises an anaerobic digestion tank, an exhaust pipe is communicated with one end of the top of the anaerobic digestion tank, and a slag discharge pipe is communicated with the bottom of the anaerobic digestion tank; the pretreatment mechanism is arranged at one end of the top of the anaerobic digestion tank; the garbage is crushed and dehydrated through the design of the pretreatment mechanism, the crushed garbage can be distributed more uniformly in the anaerobic digestion tank, microorganisms can be in full contact with the garbage, the decomposition efficiency of the microorganisms on organic matters in the garbage is improved, and therefore the overall efficiency of anaerobic digestion is improved; the solid concentration is increased, and the relatively high solid concentration is beneficial to forming a tighter reaction system in the anaerobic digestion process, so that the contact area between microorganisms and organic substances is increased, and the anaerobic digestion efficiency is further improved.

The invention relates to an optical network routing intelligent planning method and system based on multi-objective optimization. The method comprises the following steps: performing recursive partitioning on a target optical network to obtain a plurality of sub-network units and a boundary node set; inputting the plurality of sub-network units into a three-layer deep learning model for processing to obtain a routing decision matrix and a wavelength allocation vector; inputting the plurality of sub-network units and the boundary node set into a distributed controller for processing to obtain an error compensation matrix; based on the routing decision matrix and the wavelength allocation vector, performing dual strategy processing of time delay priority and hop count priority to obtain a time delay weighted evaluation function and a hop count weighted evaluation function; performing multi-target joint optimization to obtain an optimal routing scheme; and performing reconstruction cost calculation on the optical path set according to the error compensation matrix and the optimal routing scheme, and outputting a resource reconfiguration scheme. According to the implementation of the invention, the resource overhead in the network reconstruction process is reduced, and the overall operation efficiency of the network is improved.

The invention discloses a characteristic value calculation method based on electrocardio data, belongs to the field of medical data analysis, and provides an electrocardio data analysis and processing method. Comprising the following steps: decomposing different frequency components of an electrocardiosignal by using wavelet transform, and analyzing on different time scales. Wavelet transformation is relatively suitable for detecting QRS wave groups, and due to the fact that the wavelet transformation can highlight transient characteristics of signals on different frequency bands, complex electrocardiosignal processing is more efficient. In addition, wavelet transform is not only suitable for wave crest detection, but also can help to remove signal noise and improve signal definition. The deep learning technology is used for automatically extracting the features from the electrocardiosignals, a feature extractor does not need to be manually designed, related medical professional knowledge and the artificial intelligence technology are combined, wave crests in the electrocardiosignals can be more accurately detected, and meanwhile anomaly detection can be carried out, such as early signs of heart diseases such as sinus arrhythmia and the like.

The invention provides a tail gas treatment system and method.The tail gas treatment system comprises a carbon monoxide removal reactor, a first heat exchanger, a nitrous oxide decomposition reactor, an SCR reactor, a booster fan and a backflow pipeline, and a material inlet of the carbon monoxide removal reactor is connected with a tail gas source through a first pipeline; a material outlet of the carbon monoxide removal reactor is connected with a material inlet of the nitrous oxide decomposition reactor through a second pipeline and a low-temperature medium channel of the first heat exchanger, and a material outlet of the nitrous oxide decomposition reactor supplies materials to the booster fan through a third pipeline, a high-temperature medium channel of the first heat exchanger and a fourth pipeline. And the air outlet end of the booster fan is connected with the second pipeline through a return pipeline, and supplies materials to the SCR reactor through a fifth pipeline. The device is simple in structure and low in maintenance cost, can efficiently treat nitrous oxide-containing tail gas for a long period, and meets the environmental protection requirement.

The invention discloses a multi-group and multi-stage anaerobic fermentation treatment method for organic solid waste, and relates to the technical field of waste treatment, the method comprises the following specific steps: waste pretreatment; the organic solid wastes are classified, crushed, screened and subjected to moisture regulation, so that the organic solid wastes reach a state suitable for anaerobic fermentation; screening and cultivating strains; screening and cultivating efficient microbial strains suitable for organic solid waste treatment; performing multi-group and multi-stage anaerobic fermentation; dynamically monitoring, regulating and controlling microbial communities; and post-processing. By introducing an advanced microbiological detection technology, dynamic monitoring and regulation of the microflora in each stage of fermentation unit are realized, the structure and change trend of the microflora in the fermentation process are accurately reflected, and a scientific basis is provided for timely adjustment of fermentation parameters; conditions such as nutrient substance addition, temperature and pH value are adjusted according to monitoring results, so that the stability and activity of microbial communities are maintained, and the fermentation process is always in an optimal state.

The invention discloses a method for synergistically hydro-thermally treating sludge based on tea residue and organic acid, which comprises the following steps: mixing sludge with organic acid and tea residue, and performing hydro-thermal treatment and dehydration treatment on the obtained mixed slurry to obtain filtrate and a mud cake. According to the method for carrying out the synergistic hydrothermal treatment on the sludge based on the tea residues and the organic acid, the hydrothermal reaction temperature can be remarkably reduced under the synergistic effect of the tea residues and the organic acid, meanwhile, the sludge is subjected to the synergistic hydrothermal treatment through the organic acid and the tea residues, the dehydration performance of the sludge can be effectively improved, and meanwhile generation of nondegradable organic matter such as melanoidins can be effectively inhibited; therefore, efficient, environment-friendly, recycling and low-cost treatment of the sludge can be realized by fully utilizing the characteristics of the organic acid and the tea residues and cooperating with a hydrothermal treatment technology, and the method has the advantages of low reaction temperature, high treatment efficiency, low energy consumption, good dehydration effect, greenness, environmental protection and the like; wide application prospects and popularization values are realized.

The invention discloses a biologically safe and degradable cerium-based tannic acid nano-enzyme as well as a preparation method and application thereof. The nano-enzyme can be administrated through a non-invasive nasal cavity. In an area with excessive ROS, thioketone on CeTA-k1tkP is destroyed, PEG is removed, hydrogen bonds of an amino acid sequence are allowed to form beta-sheet, the beta-sheet is accumulated at an inflammation part, and a fiber or network structure is formed. Meanwhile, CeTA-k1tkP shows enzyme-like capacity, ROS is effectively eliminated, inflammation is effectively relieved, and systemic immunosuppression is avoided at the same time. In an influenza A (Flu A) virus or Sendai virus (SeV) mediated viral pneumonia model, CeTA-k1tkP can generate responsive deformation in inflammatory lung tissues, so that the nano-enzyme effectively decomposes ROS (reactive oxygen species). In addition, the CeTA-k1tkP can relieve bacterial inflammation and reduce tissue damage in a mouse viral pneumonia model with secondary bacterial infection.

The invention relates to a method for treating ammonia-nitrogen wastewater based on photocatalysis and ozonation coupling, and belongs to the technical field of wastewater treatment.The method comprises the following steps that S1, early-stage preparation is conducted on wastewater treatment; s2, photocatalytic ozone oxidation coupling treatment; s3, wastewater effluent treatment; s4, regeneration and recovery of the catalyst; and S5, monitoring the effluent quality of the wastewater. According to the method for treating the ammonia-nitrogen wastewater based on photocatalysis and ozonation coupling, the ammonia-nitrogen wastewater is treated by adopting the wastewater treatment method, so that the degradation efficiency of ammonia nitrogen can be effectively improved, and ammonia nitrogen components in the wastewater can be more effectively removed; in the photocatalytic reaction process, pollutants are decomposed into harmless substances, so that the problem of secondary pollution is avoided; in the ozone oxidation process, ozone can be quickly decomposed, the influence on follow-up treatment facilities is reduced, meanwhile, light energy is utilized in the photocatalytic reaction, the advantages of energy conservation and environmental protection are achieved, and the advantages of efficient degradation, no secondary pollution, energy conservation and environmental protection are achieved.

The invention provides an anti-hair loss and anti-dandruff composition and a preparation method thereof, and belongs to the technical field of wash supplies. The anti-hair loss and anti-dandruff composition is prepared from the following raw materials: a plant raw material, a plant extract, a caffeine composition and an oil control composition, wherein the plant raw materials comprise the following raw materials in parts by mass: 5-20 parts of ginger root, 5-20 parts of black ginger root, 5-20 parts of alpinia japonica root, 1-3 parts of ligusticum wallichii, 5-10 parts of radix sophorae flavescentis, 2-4 parts of fructus cnidii, 1-5 parts of fructus viticis, 3-5 parts of saponin, 5-8 parts of soapberry peel, 1-5 parts of dandelion, 5-8 parts of polygonum multiflorum, 1-3 parts of mulberry, 3-6 parts of cacumen biotae, 3-6 parts of mulberry leaf, 7-10 parts of purslane and 1-4 parts of mangnolia officinalis; the plant extract is prepared from the following raw materials in parts by mass: 5 to 20 parts of aloe extract, 1 to 10 parts of herba menthae extract, 5 to 20 parts of fructus forsythiae fruit extract, 5 to 20 parts of tea leaf extract, 5 to 20 parts of herba centellae extract and 1 to 10 parts of cordyceps militaris extract. The composition prepared by the invention not only has good anti-dropping and anti-dandruff effects, but also has good stability.

The invention provides a filter dam body for treating aquaculture wastewater and a use method, and relates to the technical field of filter dams. The filtering dam for treating the aquaculture wastewater comprises a dam body. The filtering dam body for treating the aquaculture wastewater comprises cement piles, a filtering dam frame is installed on the upper surfaces of the cement piles, the filtering dam frame is built by adopting two rows of hollow bricks, check blocks are installed on the surface of the bottom of the filtering dam frame, three grids are arranged in the width direction of the cement piles, and surrounding plates are arranged on the two sides of each grid. The construction mode of the filter dam is changed, simple cement piles are adopted as fixed supports, stainless steel filter screens and net cages are combined to form a filter material enclosing structure, the mode is applied to filling of biological ceramsite filter materials, and through further decomposition, adsorption and filtration, the use effect is the same as that of a filter dam of a brick-concrete structure; compared with the prior art, construction is easy and convenient, operation and maintenance are easy, the construction cost is reduced, and very good demonstration significance is achieved.

The invention provides a wet oxidation catalyst and a preparation method thereof, and a method for treating organic amine wastewater generated by reconstituted tobacco processing through catalytic wet oxidation. The wet oxidation catalyst comprises precious metal active components and a cerium oxide carrier, the cerium oxide carrier is of a porous structure, valence states of Ce in the cerium oxide carrier include positive tetravalence states, part of the precious metal active components are dispersed on the inner surface and the outer surface of the cerium oxide carrier, part of the precious metal active components are embedded into a framework of the cerium oxide carrier, and the cerium oxide carrier is of a porous structure. The valence states of the noble metal active component comprise a zero valence state and an oxidation valence state, and the content of the noble metal active component in the wet oxidation catalyst is 0.1-5% by weight. Due to the fact that precious metal ions are embedded into a cerium oxide carrier framework, interaction between cerium oxide and precious metal active components is stronger, the contact area is larger, active oxygen reaction sites can be provided more efficiently, and organic amine nitrogen substances such as nicotine in the reconstituted tobacco processing wastewater can be decomposed.

The invention relates to the field of plant growth regulators, in particular to an ultramicro-granulated energy-gathered humic acid composite preparation which is prepared from the following raw materials in parts by weight: 50-80 parts of ultramicro-granulated energy-gathered humic acid, 10-30 parts of nanoscale metal oxide, 5-20 parts of a microbial agent, 1-10 parts of a plant growth regulator and 5-15 parts of a slow release agent. According to the invention, ultrafine particle shaped humic acid, nano-scale metal oxide, a microbial agent, a plant growth regulator and a slow-release agent are organically combined. The effect of the soil conditioner is far better than that of a single component or a traditional soil conditioner.

The invention discloses a preparation method for preparing a biological fertilizer by using valine fermentation liquor, and relates to the technical field of biological fertilizer preparation, and the preparation method has the advantages that large-particle impurities and suspended solids are effectively removed by pretreating the valine fermentation liquor and using a ceramic microfiltration membrane, so that a foundation is laid for subsequent purification; then, a special adsorption material is adopted, mesoporous silica is used as a basis, after amino functional groups are introduced through surface modification, the chemical property of the adsorption material is changed, the affinity to valine is enhanced, a polymerization reaction is performed under the action of an initiator to form a polymer network, then the template molecule valine is removed, and the adsorption material is prepared. According to the present invention, the high-purity valine solution is added to the valine solution, such that the identification site complementary to the shape, the size and the chemical function of the valine is left, the valine can be accurately identified and adsorbed, the separation purification effect of the valine is substantially improved, and the accuracy and the stability of the fertilizer nutritional components can be effectively ensured when the obtained high-purity valine solution is mixed with other nutrients.

The invention relates to the technical field of tail gas treatment, in particular to a cremation machine tail gas treatment device and method. The device comprises a cooling assembly, a low-temperature plasma assembly, a high-voltage electrostatic filtering assembly and an adsorption catalysis assembly which are communicated in sequence. Through multi-stage purification, the rich dust removal effect can be achieved, consumables only need to be replaced in the adsorption catalysis section, the adsorption catalysis section is located at the final position of the treatment link, only a small amount of residual pollutants can be treated, and the replacement period can be greatly prolonged. The method does not involve chemical agents, and does not cause chemical pollution to equipment and the surrounding environment.

The invention relates to the field of nano-coatings, in particular to a nano-coating for decomposing dirt on a photovoltaic panel based on a photocatalysis technology, the nano-coating is composed of a bottom layer and a self-cleaning layer, and the bottom layer is made of nano-silver; the self-cleaning layer comprises 60 to 70 parts of titanium dioxide nanoparticles, 10 to 20 parts of zinc oxide nanoparticles, 5 to 10 parts of ferric oxide nanoparticles, 5 to 10 parts of zirconium dioxide nanoparticles, 60 to 120 parts of a solvent, 1 to 3 parts of a dispersing agent, 0.5 to 1.5 parts of a thickening agent and 1 to 3 parts of an antirust agent; the bottom layer and the self-cleaning layer are creatively added on the outer side of the photovoltaic panel, the basic bottom layer has good conductivity, antibacterial property and corrosion resistance, the self-cleaning layer can effectively keep transparency of photovoltaic glass on the surface of the photovoltaic panel by constructing concave-convex structure roughness below 50nm, and the self-cleaning layer has good anti-corrosion performance. And the nanometer coating can effectively decompose organic matter dirt on the surface of the photovoltaic panel under the illumination condition, the cleaning frequency is reduced by 80% or above, and the manual operation and maintenance amount is reduced.

The invention discloses a synthesis and purification method of electronic grade phosphorane, which relates to the technical field of phosphorane synthesis, and has the advantages that impurities such as metal oxides and carbides in a silicon carbide ceramic substrate are removed by selecting the silicon carbide ceramic substrate and performing high-temperature annealing treatment, so that the atomic arrangement of the substrate is more regular and ordered; compared with the prior art, the method has the advantages that the gallium phosphide crystal structure is more complete, so that the gallium phosphide crystal structure has higher structural stability, meanwhile, after impurities are removed, the interaction between the substrate and reactants in a high-temperature reaction environment is more controllable, the chemical stability is enhanced, a firm and reliable base is provided for growth of gallium phosphide crystals, and by adopting the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate, the yield of the gallium phosphide crystal is increased. The production of waste gas is reduced by utilizing the extremely low volatility of the gallium phosphide, and meanwhile, the reaction rate between hydrogen phosphide and hydrogen is accelerated by introducing glucose oxidase for catalytic reaction, so that the gallium phosphide crystal is promoted to efficiently and directionally grow on the silicon carbide ceramic substrate, and the product quality and the production efficiency are improved.

The invention discloses a method for preparing a biological fertilizer by combining compound probiotics and leucine fermentation liquor, and relates to the technical field of fertilizer preparation, the method comprises the following steps: carrying out magnetic reinforcement treatment on the probiotics, carrying out ultrasonic-assisted extraction on the leucine fermentation liquor, and activating and propagating the compound probiotics, and after the treatment on the compound probiotics and the leucine fermentation liquor is completed, carrying out ultrasonic-assisted extraction on the leucine fermentation liquor to obtain the biological fertilizer. The preparation method has the advantages that the bacterial liquid is placed in a magnetic field for pretreatment, so that the activity and the stability of the probiotics can be enhanced, the probiotics can play a better role in the subsequent fermentation and application process, the metabolic activity of the probiotics subjected to magnetic strengthening treatment is remarkably improved, and the metabolic activity of the probiotics subjected to magnetic strengthening treatment is remarkably improved. According to the invention, the leucine fermentation broth is used as a raw material, organic matters in the soil can be more effectively decomposed, more nutrients are released to be absorbed by crops, ultrasonic-assisted extraction is carried out on the leucine fermentation broth, and in the treatment process, ultrasonic treatment can destroy bacterial cells, so that leucine is more fully released, and the extraction rate and purity of leucine are improved.

The invention discloses a pretreatment system and method suitable for in-furnace incineration of sticky flammable and explosive hazardous waste, and according to the material treatment sequence, the pretreatment system comprises an elevator, a clamping device, a sealing device, a crushing device, a mixing device, a stirring kettle and a pump injection device, the sealing device, the crushing device, the mixing device, the stirring kettle and the pumping device are sequentially connected and jointly form an operation space capable of being isolated from the outside, and viscous flammable and explosive materials automatically flow among the devices in the operation space; and the oxygen content in the sealing device, the crushing device and the mixing device is controlled to be 3-5%. Viscous flammable and explosive materials are sealed in a barrel, the probability that the flammable and explosive materials make direct contact with oxygen is reduced, the oxygen element in combustion is limited, the explosion risk in the conveying process is reduced, other compatible waste liquid is introduced into the viscous materials, mixed and then merged into a furnace to be incinerated, the flowability of the viscous materials can be improved, and the combustion efficiency of the viscous materials is improved. The conveying resistance is reduced.

The invention relates to the technical field of composite electrocatalysts, in particular to a preparation method of a ruthenium-molybdenum-manganese composite electrocatalyst for purifying chlorine-containing organic waste gas, which comprises the following steps: S1, dissolving ruthenium salt and manganese salt in deionized water according to a certain proportion, and stirring for a period of time to obtain a mixed solution; s2, introducing a certain amount of ozone gas into the mixed solution prepared in S1; s3, weighing a certain amount of phosphomolybdic acid, adding the phosphomolybdic acid into the mixed solution in S2, and continuously stirring for a period of time to obtain a stable solid precipitate; and S4, putting the solid precipitate prepared in S3 into a muffle furnace, and roasting at a certain temperature to obtain the ruthenium-molybdenum-manganese composite electrocatalyst. By optimizing the loading proportion of ruthenium, molybdenum and manganese and the preparation method, the stability and catalytic activity of the catalyst are effectively improved. The catalyst has excellent chlorine poisoning resistance, can efficiently decompose chlorine-containing VOCs at a low temperature, realizes rapid dissociation of chlorine atoms and organic groups, and inhibits generation of by-products.

The invention belongs to the technical field of microorganisms, and relates to lactobacillus delbrueckii subsp. Bulgaricus and application thereof. The invention provides a strain of Lactobacillus delbrueckii subsp. Bulgaricus, the strain of Lactobacillus delbrueckii subsp. Bulgaricus is named as Lactobacillus delbrueckii subsp. Bulgaricus, the Lactobacillus delbrueckii subsp. Bulgaricus is preserved in China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.32206. The invention also provides a preparation method of the Lactobacillus delbrueckii subsp. Bulgaricus. The method has the effects of enhancing the texture characteristics of the goat milk, reducing the goaty smell of the goat milk and the like, and has important significance on promoting the development of the goat milk industry.

The invention discloses a method for post-root canal therapy resin closure retreatment in a medullary cavity, and relates to the technical field of root canal therapy, and the method comprises the following steps: S1, pre-operation sampling; s2, removing the restoration and other materials: removing the restoration on the surface of the dental crown and the resin sealing material in the medullary cavity by using a material removal technology and a tool, wherein the material removal technology and the tool comprise a grinding device with a sensor or a laser technology; s3, re-cleaning and disinfecting the root canal: after cleaning the root canal, using a root canal disinfection drug added with nano-silver particles, and mixing the nano-silver particles with traditional disinfection drugs such as calcium hydroxide paste; s4, filling and re-treating: blending the color of the resin by using a computer color matching technology before filling the medullary cavity; the system further comprises an intelligent design monitoring platform. According to the invention, a grinding device with a sensor or a laser technology is adopted, so that the damage to tooth tissues, especially key parts, is remarkably reduced, and the treatment safety and accuracy are improved.

The invention discloses a saline-alkali soil remediation system and method, and relates to the technical field of saline-alkali soil remediation. The system comprises a soil sample collection and preliminary analysis module, a microbial community optimization design module, a microbial mixture preparation and putting module, a soil remediation process monitoring module and a soil remediation effect evaluation module. And the synergistic effect of the microflora under the target soil condition is ensured, so that the soil remediation efficiency and effect are remarkably improved. And through accurate microorganism proportion and concentration adjustment, the microorganism dosage in the remediation process is more scientific and reasonable, and resource waste is avoided, so that the total cost of soil remediation is reduced. Compared with a traditional chemical remediation method, the adopted microbial remediation method has the advantages that the negative influence on the environment is smaller, and the health and sustainability of a soil ecological system can be protected.