121 results about "Cyanobacteria" patented technology

The invention discloses a lake cyanobacterial bloom intelligent early warning method based on unmanned aerial vehicle remote sensing and image recognition, and the method comprises the steps: fusing an unmanned aerial vehicle multispectral image and a convolutional neural network, extracting the spectral features of cyanobacteria, and calculating the concentration distribution; image registration and a dynamic model are combined to track water bloom boundary change and drift trajectory, satellite remote sensing is used to verify precision and invert biomass density, early warning levels are divided according to the precision and the biomass density, decision information is generated, and intelligent monitoring and accurate early warning of cyanobacterial bloom are realized. The comprehensive technical effects of water bloom dynamic monitoring, accurate early warning and efficient management are achieved, and a scientific basis is provided for water environment treatment.

The invention provides a blue-green algae image recognition method and system based on hierarchical self-adaption and domain driving, and the method comprises the steps: enhancing an image through employing an improved dark channel algorithm; constructing a blue-green algae biological attribute text database, and performing synonym replacement and sentence pattern recombination; multi-scale visual features are extracted through a hierarchical adaptive Swin Transform model, and key region characterization is enhanced in combination with dynamic spectrum attention; the text is input into a Bio-ALBERT model, and semantic embedding of field optimization is generated through term mask prediction and attribute relation pre-training; constructing a two-layer heterogeneous graph by using a graph attention interaction network GAIN, calculating a cross-modal association weight through a bidirectional graph attention mechanism, and outputting a cross-modal graph feature; multi-scale cross-modal association is modeled through a hierarchical graph attention fusion mechanism, and a comparison alignment loss optimization model is combined; and high-precision blue-green algae identification is realized. According to the method, through multi-scale perception, domain semantic adaptation and graph structure fusion, the accuracy of blue-green algae detection in a complex environment is improved.

The invention discloses a blue-green algae identification and quantification method and device based on unmanned aerial vehicle remote sensing images and deep learning and a medium, and relates to the technical field of information data processing. Combining meteorological data and water quality monitoring data to construct an adaptive dynamic environment algorithm to extract EXIF metadata including camera parameters and attitude angle information, and establishing a geometric projection model to perform coarse orthographic correction on an original aerial image; the method comprises the following steps: extracting a multi-scale cyanobacterial bloom image feature map by stages based on a ResNet architecture and in combination with a feature pyramid network FPN fused with an attention mechanism, and obtaining an instance mask of cyanobacterial bloom through an anchor-free region proposal network, ROI Align and a head network; based on an improved GIS space projection and deep learning algorithm, carrying out high-precision area measurement and calculation on a binary mask image converted from the instance mask; according to the method, the influence of irrelevant interference on blue-green algae identification can be reduced, and the accuracy and comparability of blue-green algae identification and area calculation are improved.

The invention discloses a confocal laser microscope detection method for micro-plastic surface biofilm components and biomass, and belongs to the field of micro-plastic pollution monitoring. The method comprises the following steps: carrying out stratified sampling and polymer component identification on micro-plastic in an environmental water body; the method comprises the following steps: marking algae, blue-green algae, bacteria and extracellular polymeric substances in a biological membrane through specific fluorescent staining, carrying out high-resolution three-dimensional imaging by utilizing a confocal laser microscope, and realizing batch quantitative analysis of each component of the biological membrane by adopting ImageJ software. The technical problems that an existing detection method is insufficient in parameter dimension, evaluation result deviation is caused only based on partial component quantification, and the influence of the overall structure of the biological membrane on the micro-plastic migration behavior cannot be truly reflected are solved. According to the method, the biomass and spatial distribution of each component of the biological membrane can be comprehensively and accurately quantified, the accuracy of analyzing the vertical migration mechanism of the micro-plastic is improved, and multi-dimensional data support is provided for ecological risk assessment.

The invention discloses a desert blue-green algae large-scale culture nutrient solution and application thereof. The desert blue-green algae large-scale culture nutrient solution is prepared from urea, monopotassium phosphate, potassium chloride, sodium bicarbonate and medium trace element fertilizer. Wherein the concentrations of the urea, the monopotassium phosphate, the potassium chloride, the sodium bicarbonate and the medium trace element fertilizer are 500-550 mg / L, 20-30 mg / L, 10-15 mg / L, 10-15 mg / L and 10 mg / L respectively. The invention provides a nutrient solution special for large-scale cultivation of desert blue-green algae, and solves the technical problems of high cost, low yield and low blue-green algae purity of large-scale cultivation of desert blue-green algae in the prior art. The nutrient solution composition provided by the invention can balance each nutrient composition, so that the nutrient composition can be more suitable for the nutritional requirements of the growth of the desert blue-green algae.

The present invention is related to the fields of bioplastics. In particular, a strain of photosynthetic cyanobacteria (i.e. blue-green algae) having a high growth rate was engineered to overexpress limonene synthase. These engineered cyanobacteria improve auto-sedimentation for biomass harvest and provide for plastic bioremediation capture. Further, machine-learning methods are provided for improving some of the aspects of cultivating cyanobacteria including, but not limited to, assessing real-time light availability and predicting real-time algae growth rates to increase a cyanobacteria biomass.

A living paint comprises a living photosynthetic microorganism, binder, growth medium, and water. The microorganism may comprise algae, cyanobacteria, or lichens. The binder may be composed of primary

Disclosed are floating antialgal-agent-loaded sodium alginate hydrogel spheres, a preparation method therefor and use thereof. The preparation method includes preparing a solution A and a solution B; dropwise adding the solution A to the solution B to obtain hydrogel spheres; and filtering and washing to obtain the floating antialgal-agent-loaded sodium alginate hydrogel spheres. The hydrogel spheres may float on the water surface and release copper ions in a low dose for a long time, and continuously inhibit the cyanobacteria on the water surface, with little impact on the water body, which may greatly reduce the risk of water pollution caused by copper ion overdosing. Meanwhile, the hydrogel spheres may effectively reduce the application times of the antialgal agent, reduce the labor cost caused by the long-term application of antialgal agent, float on the water surface for easy recovery, and do not cause secondary pollution to the water body.

The invention relates to the technical field of water circulation treatment, and particularly discloses aquaculture cyanobacteria water circulation treatment equipment which comprises a supporting base, the top of the supporting base is fixedly connected with a purification box, one side of the purification box communicates with a water inlet of an electromagnetic valve, and a water outlet of the electromagnetic valve communicates with a water drainage pipe. Two sides of the purification box are communicated with dosing nozzles, the bottom of the purification box penetrates through and is rotatably connected with a stirring aeration device, one side of the purification box is fixedly connected with an induced draft fan, an air outlet of the induced draft fan is communicated with a first connecting pipe, and the inner wall of the sandy soil settling box is slidably connected with a filtering device. The device is provided with the filtering device, so that the sandy soil filtering rate and the filtering efficiency can be improved in a back-and-forth oscillating and shaking mode, and the device is provided with the stirring and aerating device, so that the contact area between a medicament and sewage can be increased, and the water purifying efficiency is improved.

The invention discloses a bottom mud resuspension dimming method for water source algae control, and relates to the technical field of blue-green algae prevention and control, the method comprises the following steps: establishing an experiment system comprising a plurality of groups of independent water body simulation devices, each group of device being provided with a bivariate combination of bottom mud concentration and resuspension frequency; constructing a parameterized extinction model related to the sediment concentration and the sedimentation time based on the real-time illumination data of the vertical layered optical monitoring network; the turbidity of the water body is monitored in real time, when the turbidity exceeds a critical value, a dynamic compensation coefficient is generated, and a theoretical daily light receiving quantity threshold value is increased according to a direct proportion relation; traversing all double-variable combinations, and screening variable combinations which simultaneously meet the condition that the actual daily light receiving quantity is not greater than the theoretical threshold value subjected to turbidity correction and the product of the total bottom mud adding quantity and the mechanical energy consumption is minimized. According to the scheme, the parameter adaptability under the complex hydrological condition is remarkably improved, the theoretical optimal cost boundary is approached, and the algae control interruption risk is reduced.

The application discloses a preparation method of carbon dot material based on blue bacteria, and the carbon dot material is prepared by taking blue bacteria photosystem pigment as raw material. The semiconductor fluorescent carbon dot prepared by the method has stable properties, has wide spectrum absorption to sunlight, can convert ultraviolet light, visible light and infrared light into red light, and has good photoelectric performance. The application further discloses a preparation method of a blue bacteria-based semiconductor fluorescent carbon dot-blue bacteria hybrid, and application of the carbon dot material based on blue bacteria in crop production.

The invention discloses a method and device for improving acidified soil by using nitrogen-fixing cyanobacteria, the device comprises a culture tank, the outer wall of the culture tank is provided with an extension part, the top of the extension part is fixedly provided with a fixed cover, the inner bottom of the culture tank is fixedly provided with a waterproof motor, and the output end of the waterproof motor is fixedly provided with a stirring rod; a flexible silica gel paddle is arranged on the outer wall of the end part of the stirring rod, an aeration assembly is arranged on the culture tank, and the aeration assembly comprises an annular microbubble aeration pipe fixedly mounted on the inner wall of the culture tank; the device has the beneficial effects that the flexible silica gel paddle is matched with the low-speed waterproof motor and the annular micro-bubble aeration assembly, so that the dual effects of mechanical stirring and air-lift uniform mixing are realized, algae clusters can be thoroughly scattered, the algae liquid is uniform, the damage of high-speed hard stirring to algae cells is completely avoided, the activity of nitrogen-fixing blue-green algae is retained to the maximum extent, and the nitrogen-fixing effect of the nitrogen-fixing blue-green algae is improved. The survival rate of the algae is greatly improved.

The present disclosure is method for treating an asphalt roof using the following steps: (1) clearing debris from the roof; applying fused alpha alumina containing aluminum oxide to cyanobacteria stains; and (3) evenly distribute fused alpha alumina on the cyanobacteria stains such that when it rains, dead cyanobacteria molecules are washed away.

The invention discloses a blue-green algae collecting device based on a magnetic carrier and a collecting method of the blue-green algae collecting device, and belongs to the technical field of blue-green algae treatment. The device comprises a liquid storage unit, a magnetic separation unit and a collection unit, the magnetic separation unit is matched with the liquid storage unit, the magnetic separation unit generates a directional magnetic field and acts on mixed liquid in the liquid storage unit, so that magnetic carriers combined with blue-green algae in the mixed liquid are gathered in the acting direction of magnetic field force, and the blue-green algae-magnetic carrier compound is formed. The magnetic carrier is prepared, and polydopamine (PDA) is rich in active groups, so that the affinity and binding force to cyanobacteria cells are enhanced; meanwhile, a buffer solution is used for accurately regulating and controlling pH, the optimal environment for carrier synthesis and blue-green algae combination is guaranteed, and compared with an unmodified carrier, the blue-green algae capture rate is remarkably increased.

The invention discloses a blue-green algae carbon quantum dot modified gas diffusion electrode as well as a preparation method and application thereof, and belongs to the technical field of environmental engineering. The preparation method comprises the following steps: preparing nitrogen auto-doped cyanobacteria carbon quantum dots (BGA-CQDs) as an electrode modification material by taking nitrogen-rich cyanobacteria as a precursor through a hydrothermal method, and further mixing the cyanobacteria carbon quantum dots with carbon black, polytetrafluoroethylene (PTFE) and absolute ethyl alcohol to prepare uniform catalyst slurry; the blue-green algae carbon quantum dot modified gas diffusion electrode (CQDs-GDE) is prepared by coating a pretreated carbon felt base material with the blue-green algae carbon quantum dot modified gas diffusion electrode (CQDs-GDE), and after the blue-green algae carbon quantum dot modified gas diffusion electrode (CQDs-GDE) is applied to an electro-Fenton system, TCPP in a water body can be efficiently degraded.

The utility model relates to an offshore enclosure system which comprises a first enclosure belt and a second enclosure belt which are arranged between the interiors of a concave shoreline, a water body is arranged in the concave shoreline, and blue-green algae flows into the surface of the water body towards the inner side of the concave shoreline along the prevailing wind direction; the first enclosure belt is located on the inner side of the second enclosure belt and comprises a plurality of first enclosures arranged side by side, the lower end of the first enclosure belt sinks to the bottom of a water body, and a first interval is formed between every two adjacent first enclosures; the second enclosure belt comprises a plurality of second enclosures arranged side by side, the lower ends of the second enclosures sink to the bottom of the water body, and a second interval is formed between every two adjacent second enclosures, so that the maintenance and replacement cost of single enclosures is reduced, meanwhile, the first interval and the second interval are arranged in a staggered mode, and the first enclosure belt and the second enclosure belt jointly share the impact force of water body flowing; the possibility that the first enclosure belt and the second enclosure belt are impacted and damaged is reduced while the effect of enriching the blue-green algae is achieved, and the service life of the first enclosure belt and the service life of the second enclosure belt are prolonged.

Probes for the detection of toxinogenic cyanobacteria, and the use of at least one pair of these probes in a method for the detection of the toxinogenic cyanobacteria in a sample likely to contain the toxinogenic cyanobacteria. Also, corresponding kits including at least one pair probes specific to toxinogenic cyanobacteria.

This invention relates to the field of waste sludge treatment technology, specifically to an in-situ resource utilization method for a microbial-algae system and its application. The in-situ resource utilization method for the microbial-algae system includes: placing waste sludge, microalgae, and sodium sulfite in an anaerobic fermentation reactor, then adjusting the pH of the mixture and fermenting under anaerobic conditions; wherein the microalgae include at least one of the phyla of green algae, cyanobacteria, and diatoms; and no anaerobic sludge is added to the anaerobic fermentation reactor. This method can effectively utilize the microbial-algae system to increase the yield of volatile fatty acids during anaerobic fermentation in situ, and can also reduce the yield of waste sludge in situ, thereby lowering the subsequent disposal costs of sludge and microalgae in the secondary sedimentation tank.

The application discloses a kind of based on toxigenic and odor-producing gene toxigenic and odor-producing cyanobacteria field rapid monitoring system and method, a kind of based on toxigenic and odor-producing gene toxigenic and odor-producing cyanobacteria field rapid monitoring system, including water sample algal automatic enrichment module, algal cell rapid lysis and DNA extraction tube, isothermal / normal temperature PCR module, palm fluorescence detector, qualitative and quantitative algorithm and toxigenic and odor-producing cyanobacteria risk warning grade calculation software, mobile phone APP software, each module is sequentially linked.The application realizes the integrated detection of toxigenic and odor-producing cyanobacteria quickly, accurately and conveniently, solves the problem that existing technology cannot accurately distinguish between toxigenic and non-toxigenic cyanobacteria and is difficult to scientifically assess the health risk of water body, while overcoming the limitations of traditional monitoring technology, such as laboratory detection, large equipment, complex operation, long detection period, etc., and meeting the timeliness, convenience and ease of operation requirements of field scenes such as grassroots monitoring, outdoor inspection and emergency disposal of sudden water bloom.

The invention discloses a blue-green algae separating and fishing device, and belongs to the technical field of blue-green algae separation. Comprising a separation box, the separation box is of a cavity structure, a buoy is fixedly arranged on one side of the separation box, a mounting frame is fixedly arranged on the side, provided with the buoy, of the separation box in a communicating mode, a filtering frame is arranged in the mounting frame, and two connecting rods are fixedly arranged on one side of the filtering frame; the ends, away from the filtering frame, of the two connecting rods extend into the cavity structure and are fixedly provided with connecting shafts, the outer surfaces of the connecting shafts are sleeved with mounting sleeves, the sides, away from the connecting shafts, of the mounting sleeves are provided with mounting blocks, guide blocks are arranged on the connecting shafts, guide grooves are formed in the inner walls of the mounting sleeves, and abutting rods are fixedly arranged in the cavity structure. The abutting rod can abut against the filtering frame. According to the method, the dried blue-green algae can serve as a natural resource to be recycled, various potential utilization values are achieved, and cyclic conversion of the resource is achieved.

This invention relates to a floating photocatalytic material, its preparation method, and its application in cyanobacteria control. The method includes the following steps: uniformly mixing a phenolic compound, an aldehyde solution, a solvent, and an alkaline catalyst, followed by a prepolymerization reaction to obtain a prepolymer; adding a foaming agent to the prepolymer and mixing uniformly to obtain an emulsion; adding an acidic catalyst to the emulsion and undergoing a gelation reaction to obtain a wet gel; and curing the wet gel by heating to obtain the floating photocatalytic material. This invention utilizes an integrated foaming process to simultaneously form a porous structure with interconnected internal components during synthesis, giving the material sufficient low density to achieve self-floating. The material itself is the photocatalytically active component, simultaneously possessing structural support and buoyancy functions, achieving integrated construction of material function and structure. This effectively avoids problems such as active component shedding, loss, and secondary pollution, resulting in high catalytic efficiency. This material can be directly used as a floating board for cyanobacteria control, achieving efficient and eco-friendly continuous inhibition of cyanobacteria.

The invention relates to the technical field of biology, in particular to a cyanobacteria tRNA switch and application thereof. The tRNA anti-escape switch suitable for blue-green algae is developed, meanwhile, the expression application condition of blue-green algae genes is screened, appropriate reporter genes are selected, and a reporting system matched with the tRNA anti-escape switch is constructed. The tRNA anti-escape switch and the tRNA anti-escape switch report system provided by the invention can be used for blue-green algae, a traditional gene regulation mode of the blue-green algae is changed, and a new thought and a new method are provided for blue-green algae gene editing.

The application discloses a multifunctional anti-corrosion blue-green algae carbon material electrode and a preparation method and application thereof, and belongs to the field of electrode materials. The application takes blue-green algae carbon material as a core. The cell structure of blue-green algae is naturally provided with a multistage pore structure, and can be converted into hierarchical porous carbon after pyrolysis, which is beneficial to in-situ nitrogen doping, has a large specific surface area, high electrochemical activity, and strong conductivity. The wettability of the carbon felt gap is improved by increasing the gap. Meanwhile, through three paths of improving anchoring capacity by KOH surface chemical modification, maintaining organic acid obtained by carbon fixation by compounding Co3O4 slurry and precisely loading active components, and constructing and cross-linking double protective layers, the uniform distribution of functional materials, the dense and firm protective layer, and the reservation of electrode conductivity are unified, and finally, a long-acting composite electrode suitable for the electrolyte environment of a carbon fixation photovoltaic flow battery is prepared.

The invention relates to the technical field of cyanobacterial bloom treatment, and discloses a composite slow-release algal-inhibiting colloid and a preparation method and application thereof.The composite slow-release algal-inhibiting colloid comprises phenolic acid algal-inhibiting active substances, chitosan, polyvinylpyrrolidone and lactic acid, the average hydrodynamic particle size of the composite slow-release algal-inhibiting colloid is 50-800 nm, and the average hydrodynamic particle size of the composite slow-release algal-inhibiting colloid is 100-200 nm. The phenolic acid algal inhibition active substance is selected from one or more of gallic acid, pyrogallic acid and p-hydroxybenzoic acid. Targeted enrichment of algae is achieved through the electrostatic adsorption effect between positive charges of a chitosan molecular chain and negative charges on the surface of cyanobacteria cells; meanwhile, a three-dimensional network structure jointly constructed by the chitosan and the polyvinylpyrrolidone wraps the active substances, long-acting slow release is achieved, the colloid has the dual functions of targeted adsorption and long-acting slow release, and the utilization efficiency and action durability of the algal inhibition active substances are improved.

The invention belongs to the technical field of blue-green algae treatment, and particularly relates to a floating type blue-green algae treatment and micro-nano aeration robot which comprises a supporting plate, an aeration device is fixedly installed in the middle of the interior of the supporting plate, floating blocks are fixedly installed at the four corners of the top of the supporting plate, and treatment devices are fixedly installed at the four corners of the bottom of the supporting plate. Propeller bins are symmetrically and fixedly mounted at the bottom of the supporting plate; through the arrangement of the telescopic assembly and the spray expanding assembly, when blue-green algae in a water area is aerated, the robot can flexibly adjust the aeration depth and the coverage range according to the water depth and water quality conditions of different water areas, the extension length of an aeration pipe is increased in a deep area, it is ensured that micro-nano bubbles can fully reach a bottom water body, and the aeration efficiency is improved. Meanwhile, all-directional three-dimensional spraying operation is carried out, inhibition and decomposition of blue-green algae are enhanced, and aeration operation can be better carried out on the blue-green algae in the water area through mutual cooperation of the two.

To provide a carbon dioxide fixation method that eliminates the need for artificial injection of carbon dioxide, and allows for the removal of carbon dioxide that has naturally dissolved into seawater from the atmosphere, etc., through vapor-liquid equilibrium, by fixing it as carbonate. [Solution] A method for fixing carbon dioxide, characterized by fixing and removing carbon dioxide from seawater as carbonate, comprising the steps of: (A) forming a cyanobacteria mat on the surface of a solid; (B) placing the cyanobacteria mat in seawater; and (C) irradiating the cyanobacteria mat in seawater with light to form carbonate.

The objective of this invention is to provide a technology that can stabilize the ground in coastal areas and other similar locations. [Solution] The present invention provides a method for producing a solidified product of calcium-containing sand and gravel, the method comprising the steps of: obtaining iron powder-containing sand and gravel by mixing calcium-containing sand and gravel and iron powder; and contacting the iron powder-containing sand and gravel with cyanobacteria and / or green algae, wherein the iron powder content in the iron powder-containing sand and gravel is 2 to 12 v / v%.

The application provides a cyanobacteria image recognition method and system based on hierarchical adaptation and field driving. In the recognition method, an improved dark channel algorithm is used to enhance the image; a cyanobacteria biological attribute text database is constructed and synonym replacement and sentence restructuring are performed; multi-scale visual features are extracted through a hierarchical adaptive Swin Transformer model, and key region representation is enhanced in combination with dynamic spectrum attention; text is input into a Bio-ALBERT model, and field-optimized semantic embedding is generated through term mask prediction and attribute relationship pre-training; a two-layer heterogeneous graph is constructed using a graph attention interaction network (GAIN), cross-modal correlation weights are calculated through a bidirectional graph attention mechanism, and cross-modal graph features are output; multi-scale cross-modal correlations are modeled through a hierarchical graph attention fusion mechanism, the model is optimized in combination with a contrast alignment loss, and high-precision cyanobacteria recognition is achieved. Through multi-scale perception, field semantic adaptation and graph structure fusion, the application improves the accuracy of cyanobacteria detection in complex environments.

The invention relates to a blue-green algae collecting system and method based on a multi-source flow field and machine learning, belongs to the technical field of blue-green algae collecting devices, and provides a blue-green algae collecting system based on the multi-source flow field and machine learning. The water pump is connected with the ashore water pump and the treatment device through pipelines; and the other end extends to the water surface through the collecting arm, so that the collecting range of the device is enlarged, and the collecting efficiency and the water pumping efficiency can be remarkably improved. Through deep fusion of the Internet of Things, artificial intelligence and a collection system, accurate perception, accurate prediction and efficient collection of blue-green algae on the water surface are realized, and conversion of blue-green algae prevention and control from passive response and accurate and efficient collection is promoted. The distribution condition of current blue-green algae is recognized in real time through an AI model, a current blue-green algae distribution diagram is fused with data of a wind field and a flow velocity field, space-time distribution and density changes of the blue-green algae are accurately predicted through a machine learning model, and blue-green algae fishing operation is dynamically carried out.