80 results about "Biofouling" patented technology

The invention relates to the technical field of ship energy efficiency analysis, and particularly discloses a digital twinning-based bulk carrier EEDI pre-evaluation and design optimization method and device, and the method comprises the steps: carrying out the multi-source data collection, building a ship full life cycle database, building a high-precision digital twinborn body based on transfer learning calibration, coupling target port tide time series data, and carrying out the design optimization. The influence of dynamic water depth and water flow changes on a ship navigation strategy is simulated, the whole-course navigational speed is optimized to reduce the total oil consumption, a hull biological pollution bottom growth model is introduced into energy efficiency evaluation, the energy efficiency attenuation trend of the whole life cycle of the ship is predicted, and an operation EEDI index is generated through multi-physics coupling simulation. And multi-target collaborative optimization is carried out in combination with maneuverability safety evaluation, so that the problems that traditional EEDI evaluation is separated from actual operation conditions and neglects tidal window matching and hull energy efficiency attenuation are solved, and accurate prediction and collaborative optimization of the energy efficiency and safety of the whole life cycle of the ship from a design stage are realized.

The invention discloses a multi-spectral image fusion building surface biological attachment area detection method and device and a medium, relates to the technical field of image processing, and discloses a multi-spectral image fusion building surface biological attachment area detection method comprising the following steps: based on a to-be-detected building, obtaining a visible light image collected by a visible light camera of an unmanned aerial vehicle, the multispectral camera acquires a multispectral image sequence based on at least two different frequency bands; registering the visible light image and the multispectral image based on a calibration and preprocessing module to obtain a pixel-level aligned visible light image and multispectral image sequence; and according to a deep learning feature identification module, identifying the visible light image and the multispectral image sequence after pixel-level alignment, and obtaining a pixel-level segmentation result of the organism attachment area of the to-be-detected building. Therefore, detection is carried out based on the unmanned aerial vehicle, deep learning and an image feature fusion mode are combined, and the building surface bioattachment recognition accuracy is improved.

The invention relates to the technical field of ocean engineering equipment, in particular to a marine organism cleaning floating ship used at a cold source water intake of a nuclear power station, which comprises a buoyancy platform, four hydraulic winches are mounted and connected on the buoyancy platform and are distributed at the left upper corner, the right upper corner, the left lower corner and the right lower corner of the buoyancy platform; the buoyancy platform is provided with a cleaning suction device used for cleaning marine organisms on the intercepting net, the buoyancy platform is further connected with a discharging pipeline with a downward outlet, the cleaning suction device is provided with a suction pipe, and the flow of the suction pipe can be changed. The cleaning suction device is further provided with a cleaning brush capable of washing marine organisms on the intercepting net, and the cleaning effect is better optimized.

The invention belongs to the technical field of underwater detection, and discloses an intelligent detection method and system for appearance defects of a multi-biological attachment pier, and the method comprises the steps: obtaining multi-modal image data, carrying out the feature-level registration, splicing the registered multi-modal images, and obtaining a fusion feature; obtaining a high-level semantic feature based on the fusion feature, obtaining a first feature map based on the high-level semantic feature and the fusion feature, and generating a pier surface biological attachment mask based on the first feature map; based on the advanced semantic features and the attachment mask, reconstructing a clean pier surface image without biological attachments; on the basis of the cleaned pier surface image, identifying and segmenting apparent defects of the pier surface; and defining a loss function, and training the intelligent detection model to obtain a trained intelligent detection model. According to the method, the accuracy and robustness of defect detection are remarkably improved, meanwhile, the dependence on manual annotation data is reduced, and a feasible intelligent solution is provided for structure detection in an underwater complex scene.

The present invention deals with the development of novel nanocomposite paints for biofouling removal coatings, which result from the mixing of two components, where the first component is an epoxy resin (component A) and the second component is a suitably modified polymerization agent (hardener). These hardeners are modified with hydrophobic nanoparticles based on functional dendritic polymers with symmetric or asymmetric architecture or based on functional inorganic nanoparticles (metal or metalloid nanoparticles or a mixture thereof). Both the polymeric nanoparticles and the inorganic nanoparticles were modified with suitable lipophilic groups. These nanocomposite paints addressed by the present invention exhibit organic microfilm control properties and can be effectively applied to objects immersed in seawater as biofouling removal coatings.

The invention belongs to the technical field of biofouling prevention sensors, and particularly relates to a polymer film sensing chip as well as a preparation method and application thereof. The polymer film sensing chip provided by the invention comprises a flexible substrate, an indicator electrode conducting layer, an indicator electrode sensing film, a reference electrode conducting layer, a reference electrode sensing film and a flexible packaging layer which are arranged on the surface of the flexible substrate, and a self-adhesion hydrogel layer arranged on the outermost layer, the material of the self-adhesion hydrogel layer comprises catechol type hydrogel, chitosan type adhesion hydrogel, polypeptide type hydrogel or hyaluronic acid type hydrogel. The self-adhesion hydrogel layer in the polymer film sensing chip provided by the invention contains a large number of hydrophilic functional groups and has excellent hydrophilic performance, and a water layer structure can be formed between the surface of the polymer film and fouling organisms so as to hinder the adhesion of the fouling organisms. The polymer film sensing chip provided by the invention has good ion permeability and mechanical strength, and can effectively inhibit adhesion of fouling substances.

Techniques for reducing biofouling on optical equip- ment, using minimum power in a marine environment are provided. An example of an apparatus according to the disclosure includes a housing including a cavity and an ultraviolet transparent window disposed over the cavity, an optical device disposed in the cavity and directed towards the ultraviolet transparent window, one or more ultraviolet light emit- ting diodes disposed in the cavity and directed towards the ultraviolet transparent window, and a controller operably coupled to the one or more ultraviolet light emitting diodes and configured to provide at least one lamp power function to the one or more ultraviolet light emitting diodes, wherein the at least one lamp power function is based on at least a flash power value, a flash duration, a rest power value and a rest duration.

This invention discloses a method and system for monitoring underwater biological attachments on ship hulls using images, belonging to the field of underwater image monitoring technology for ship hulls. The method acquires a continuous binocular depth image sequence and a local velocity field image of the target observation area; calculates a pixel-level temporal depth variance map within a sliding time window, and outputs a dynamic occlusion mask image by combining it with the velocity field image; smooths the mask image and multiplies it with the normalized variance map to generate a spatial fusion weight matrix; extracts depth maxima on time frames to generate a local penetration depth map and calculates a mean depth map; weights the two images using the weight matrix and stitches them together to generate a candidate substrate depth map; calculates a spatial gradient matrix and combines it with the weight matrix to generate a diffusion steering matrix; then, it performs edge-preserving filtering on the candidate substrate depth map to generate a bottom rigid reference surface depth map, and finally generates an adaptive pressure control command. This invention achieves high-precision perspective and three-dimensional substrate reconstruction of a bottom rigid surface under dynamic flexible occlusion.

The invention provides methods for treating or preventing microbial (eg, bacterial) infections and means for performing these methods. In particular, treatment of infections requiring rapid and durable therapy is made possible, such as for treating acute conditions such as septicemia, sepsis, SIRS or septic shock. The invention is particularly useful, for example, for treatment of microbes such as for environmental, food and beverage use. The invention relates inter alia to methods of controlling microbiologically influenced corrosion (MIC) or biofouling of a substrate or fluid in an industrial or domestic system. The invention also useful for the treatment of pathogenic bacterial infections in subjects receiving a treatment for a disease or condition, such as a transplant or a treatment for cancer, a viral infection or an autoimmune disease.

This invention relates to a multifunctional composite membrane containing a natural antibacterial agent and a biomimetic hydrophilic carrier, and pertains to the field of separation membrane manufacturing technology for water treatment applications. The membrane is prepared by blending MCM-41 type honeycomb-structured mesoporous silica modified with tea tree oil (TTO) with a PVDF membrane, aiming to enhance the membrane's antibacterial and antifouling capabilities. TTO, with its excellent antibacterial properties, effectively alleviates biofouling problems, while MCM-41 possesses a high specific surface area and good chemical stability, offering multiple benefits including improved membrane hydrophilicity, reduced fouling, and enhanced essential oil dispersion. The combination of tea tree oil and MCM-41 simultaneously addresses both organic and biofouling issues in PVDF membranes, achieving a synergistic improvement in both material and membrane performance.

This invention relates to the field of nanocomposite materials technology, specifically to a carbon-based silver sulfide composite aerogel with synergistically enhanced light-harvesting and biofouling resistance, its preparation method, and its applications. The method involves pouring a chitosan-graphene solution into a polystyrene mold and using different cryogenic casting methods to obtain chitosan-graphene aerogels with different orientations. Carbonization under a N2 atmosphere yields carbon-based aerogels with different structures. Immersion in a tannic acid-Tris solution allows for the adsorption of tannic acid molecules. After washing with deionized water, the aerogels are immersed in a silver nitrate solution to form tannic acid-silver ion complexes. Further washing with deionized water and immersion in a thioacetamide solution yields carbon-based silver sulfide composite aerogels with different structures. This method solves the problem of performance loss due to biofouling in carbon-based three-dimensional porous materials. The carbon-based silver sulfide aerogel exhibits superior light absorption and photothermal properties compared to carbon-based zinc oxide aerogels, overcoming the problem of weakened evaporation performance in conventional anti-biofouling designs.

The invention belongs to the technical field of material surface performance detection, and particularly relates to a method for detecting biological pollution resistance and durability of a silicone rubber surface, and the method comprises the following steps: S1, sequentially carrying out biological membrane inhibition rate quantitative detection, antibacterial adhesion detection, protein adsorption resistance test and surface wettability test on a silicone rubber sample to be detected; s2, carrying out durability treatment on the parallel sample; s3, repeating partial or all tests in the step S1 on the sample treated in the step S2; s4, comparing the performance data obtained in the step S1 and the performance data obtained in the step S3, and evaluating the biological pollution resistance and durability of the silicone rubber sample. According to the invention, biological membrane inhibition rate quantitative detection, anti-bacterial adhesion detection, anti-protein adsorption performance test, surface wettability analysis and durability test are organically combined to form a complete evaluation closed loop from molecular adsorption to microbial community and from immediate efficiency to long-acting stability, and all key links of biological pollution are comprehensively covered.

The invention discloses a gel material with corrosion inhibitor and bactericide slow release functions and a preparation method thereof. The gel material is prepared from polyvinyl alcohol, a corrosion inhibitor and a bactericide through a circulating freezing-melting physical cross-linking method, and long-term, stable and controllable release of the corrosion inhibitor and the bactericide on the metal surface can be achieved, so that electrochemical corrosion and biological fouling are synergistically inhibited. The material is suitable for a complex environment with ocean alternation of wetting and drying, high salinity and high biological activity, and has the characteristics of high utilization rate of active ingredients, low maintenance frequency, environmental friendliness and the like.

Devices, methods, and / or systems are disclosed for protecting water flow systems from biofouling and / or other associated contamination. One or more devices are introduced into water flow systems, such as downstream of water supplies (e.g., lakes, oceans, rivers, reservoirs or other water supplies, including storage water supplies) and upstream of various surfaces / systems in water flow systems requiring biofouling protection. The device includes a defined volume for water and at least one structure positioned in the defined volume in use configuration to interact with the water in the defined volume to form "conditioned water" downstream into the water flow system. Such devices prevent, limit and / or reduce biofouling in water flow systems.

The invention provides a marine organism adhesion prevention material with a fluff structure on the surface as well as a preparation method and application of the marine organism adhesion prevention material, a strand formed by combining or twisting polyolefin monofilaments, high-strength PE (polyethylene) film-split fibers or ultra-high molecular weight polyethylene multifilament fibers is taken as a main body, and good strength and mechanical support are provided. The yarn with the fluff on the surface serves as the functional fiber yarn, and cohesive force and friction force between fibers in the yarn strand and between the yarn strand and the yarn can be increased after the functional fiber yarn is twisted with the main body yarn strand, so that the plied yarn or the multi-twisted yarn is not prone to fracture and loosen when bearing pulling force. Meanwhile, the fluff structure can be gathered on the surface of the plied yarn or the multi-twisted yarn, attachment of fouling organisms is remarkably inhibited by means of physical blocking and surface energy reduction, and the structure can remarkably inhibit attachment of large fouling organisms by increasing contact resistance, reducing attachment area and destroying ways of adhesion media secreted by organisms, so that the service life of the structure is prolonged, and the service life of the structure is prolonged. The non-toxic and environment-friendly antifouling effect is realized.

The present invention relates to a to a method for protecting a titanium alloy having a MMO on its surface by application of a voltage, in particular, from biofouling; to a shaped part comprising a titanium alloy having a MMO on its surface; and to a method for protecting such a shaped part from biofouling.

The invention discloses a membrane channel biological pollution multi-physical field simulation method based on physical information deep learning, which comprises the following steps: acquiring sampling data, and mapping the sampling data into a biological membrane morphology characterization field which is continuously distributed along with space coordinates; constructing a deep neural network model, taking the space coordinates of the membrane channel as input, taking multi-physical field state variables in the membrane channel as output, and establishing a mapping relation from the space coordinates to physical fields; a composite loss function driven by physical information is constructed, the composite loss function comprises a physical equation residual error used for constraining a physical field to meet a preset physical conservation law and a boundary condition residual error item used for constraining a boundary condition, and physical field distribution output by the model is made to conform to a physical evolution law in a membrane channel and biological membrane pollution characteristics at the same time; inputting space coordinates of a to-be-predicted area into the trained deep neural network model to obtain full-field physical quantity distribution information in the polluted membrane channel; the quantitative digital basis is provided for the anti-pollution bionic separation net.

The utility model discloses a self-cleaning ultrasonic anti-marine organism monitoring device which comprises a sealing cover and a floating ball, the sealing cover and the floating ball are connected into a whole through a bolt, a monitoring assembly is installed in the sealing cover, the monitoring assembly comprises an installation frame, the installation frame is fixedly connected to the inner wall of the top of the sealing cover, and the installation frame is fixedly connected to the inner wall of the top of the sealing cover. A controller and a storage battery are fixedly mounted on the inner wall of the bottom of the mounting frame, a water suction pipe is fixedly inserted into the sealing cover, one end of the bottom of the water suction pipe penetrates through the sealing cover and extends in the direction of the floating ball, and ultrasonic transducers are mounted outside a water inlet in the bottom of the water suction pipe and at the bottom of the circumferential outer wall of the floating ball; by arranging the ultrasonic transducers, the controller and the storage battery, the water suction pipe and the floating ball can be automatically cleaned, the situation that marine organisms block the water pipe and affect use of the device is effectively avoided, and the service life of the device is prolonged.

Disclosed herein are PEG-maximin H5 peptide conjugates and methods for using the same in the treatment or prevention of biofilms and biofouling.

The invention discloses an in-situ sampling device and method for a biological membrane attached to a water body, and relates to the technical field of biological membrane sampling. Comprising a base body, a slide glass plate, a covering assembly, a floating recovery unit and a control unit, the base body is stably supported at the water bottom through the balance weight cavity and the supporting flat plate with the annular protrusion. The multiple layers of slide glass plates are spirally arranged along the vertical frame to bear sampling slide glass, and the sampling slide glass realizes the attachment of a water body biological membrane; the covering assembly drives a sealing cover plate to rotate through a driving motor, the sealing cover plate and the slide glass plate are covered to form a sealing cavity, and in-situ sealing of the biological membrane is achieved; and the floating recovery unit realizes autonomous recovery. Through the integrated design of low-disturbance landing, multi-layer synchronous culture, in-situ active sealing and autonomous lossless recovery, the problems that in a traditional sampling technology, sedimentation disturbance is large, samples are prone to loss, and substrate adaptability is poor are effectively solved, and high-fidelity and automatic sampling of the biological membrane attached to the water body is achieved.

Endotoxin production inhibition in a water system, or both biofouling inhibition and endotoxin production inhibition can be achieved. In a membrane treatment method or a biofouling inhibition method, a bonded halogen compound is caused to exist in a water system where gram-negative bacteria exist. In an endotoxin production inhibition method in a water system, a bonded halogen compound is caused to exist in the water system.

The invention provides methods for treating or preventing microbial (eg, bacterial) infections and means for performing these methods. In particular, treatment of infections requiring rapid and durable therapy is made possible, such as for treating acute conditions such as septicemia, sepsis, SIRS or septic shock. The invention is particularly useful, for example, for treatment of microbes such as for environmental, food and beverage use. The invention relates inter alia to methods of controlling microbiologically influenced corrosion (MIC) or biofouling of a substrate or fluid in an industrial or domestic system. The invention also useful for the treatment of pathogenic bacterial infections in subjects receiving a treatment for a disease or condition, such as a transplant or a treatment for cancer, a viral infection or an autoimmune disease.

This utility model relates to the field of marine biofouling prevention technology and discloses a snap-ring type ultrasonic anti-marine biofouling device for ship main seawater pipes. It includes an intelligent monitoring cabinet and an ultrasonic transducer array. The intelligent monitoring cabinet is electrically connected to the ultrasonic transducer array via a main power transmission cable. This device solves the problem of large-area installation of seawater pipes without damaging the pipe structure, even in situations where space below deck is limited and movement is difficult. By using a discrete oscillator to drive the snap-ring to vibrate at high frequency, it excites higher-order bending modes in the seawater pipe, achieving a wide-range ultrasonic vibration effect to realize the three-dimensional anti-marine biofouling purpose. The snap-ring features good fit to the main seawater pipe, reliability, and durability, and is easy to install. It can be deployed before or after the main seawater pipe is assembled on the ship, allowing installation on both new and old ships. The distributed transducer array improves the ability to apply electrical power and the sound field coverage.

The invention relates to the field of wind driven generator foundation platforms, in particular to a floating type wind driven generator foundation platform and a construction method.The floating type wind driven generator foundation platform comprises a generator tower support, a buoy support is fixedly installed at the side end of the generator tower support, and a buoy body is fixedly installed in the buoy support; the driving mechanism is movably installed between the generator tower support and the buoy support, and the self-cleaning mechanism is movably installed in the buoy support and matched with the driving mechanism. According to the floating type wind driven generator foundation platform, wave energy collection and the cleaning execution mechanism are seamlessly connected through the driving mechanism, full-automatic and normalized scraping and sweeping cleaning of organisms attached to the surface of the buoy is achieved, and the continuous cleaning mode can effectively prevent accumulation of biological fouling and damage; the problems that traditional regular maintenance is long in period, high in cost and large in risk are fundamentally solved, long-term stability of the hydrodynamic performance of the platform is guaranteed, and the overall service life of the buoy and the platform is prolonged.

This invention relates to the field of electrochemical detection technology, specifically to a Y-type peptide-modified ion-selective electrode, comprising an electrode substrate, a solid-state transduction layer, an ion-selective membrane, and an antifouling and antibacterial layer. A conductive porous metal-organic framework (MOF) material is used as the solid-state transduction layer, whose large specific surface area provides numerous active sites for ion transfer, promoting ion transport and conversion. By employing different ion exchange membranes, the detection of multiple different ions can be achieved. Simultaneously, a peptide is used as an antifouling and antibacterial layer attached to the surface of the ion-selective membrane, modifying the ion-selective electrode and integrating both anti-adhesion and bactericidal properties. This solves the problem of biofouling caused by biomass adhesion or growth on the electrode surface during seawater detection, providing excellent antifouling performance and enabling more accurate ion detection. The invention also provides a method for preparing the ion-selective electrode and its applications.

Described herein are electrochemical capacitive biosensors, methods of making same, and methods of using same. The electrochemical capacitive biosensors are especially useful for detecting pathogens, including viruses, bacteria, and allergens, in aerosols and complex biological media.

The present invention relates to a method for modifying a reverse osmosis thin-film composite (TFC) membrane, the polyamide active layer of which is modified by incorporating polyamine groups, polyphosphonic groups and copper nanoparticles / ions via a chemical modification process. This modified composite membrane exhibits high biofouling resistance, which makes it suitable for use in seawater and brackish water desalination.

A system 10 includes a subsea treatment system 11 to inhibit biological growth along one or more surfaces of a subsea equipment 13, wherein the subsea treatment system comprises a light treatment syst

Forming an object of the present invention is a compound of general formula (I) as identified in the present description, a use of the compound of general formula (I) as a biofouling reducing agent, as an antifouling agent and / or fouling release agent, and a composition comprising said compound, a cross-linkable polymer, and preferably hydrophobic silica nanoparticles.

The invention belongs to the technical field of nuclear power station cold source guarantee, and discloses an intelligent nuclear power station cooling water marine organism pollution suppression device which comprises a float-type external unit, a top solar panel, a self-adaptive frequency adjusting system, a low-frequency pulse electric field generator and an embedded titanium alloy electrode. The low-frequency pulse electric field generator is electrically connected with the embedded titanium alloy electrode, the embedded titanium alloy electrode is embedded into the inner wall of the cooling water pipeline and installed on the float-type external unit, the float-type external unit is arranged in a water area on the periphery of a water intake, and the top solar panel is installed on the top of the float-type external unit to achieve power supply. The low-frequency pulse electric field generator is controlled by the self-adaptive frequency adjusting system to generate pulses with corresponding frequency waveforms, and the self-adaptive frequency adjusting system is arranged in a water intake duty room. The ecological environment is prevented from being damaged by harmful products; operation and maintenance cost is reduced, safety and reliability are improved, and breeding and attachment of marine organisms are effectively controlled.