334 results about "Biological growth" patented technology

The invention discloses a multi-objective optimization decision control method for shrimp and silkworm polyculture environment parameters, and relates to the technical field of polyculture control. The method comprises the following steps: deploying a water quality sensor network, and combining prawn and nereis growth monitoring equipment; extracting criticality of environmental parameters and biological growth indexes by using historical breeding data and experimental data; constructing a dynamic coupling model, and establishing a dynamic model of the polyculture system based on a differential equation; developing a hybrid optimization algorithm to balance the competition and symbiotic relationship between the prawns and the nereis; and generating a control instruction set based on an optimization result, and adjusting the control equipment through a fuzzy PID controller. According to the invention, intelligent regulation and control of shrimp and silkworm polyculture environment parameters are realized, and economic benefits of shrimp and silkworm polyculture are improved.

The invention discloses an agricultural whole industrial chain traceability method and system based on big data, particularly relates to the technical field of agricultural Internet of Things and intelligent decision making, and is used for solving the problems of cause and effect chain breakage, damage-causing factor positioning deviation and insufficient traceability reliability caused by neglecting irreversibility of biological growth in the existing agricultural traceability system. The method comprises the following steps: dividing time sequence data fragments based on an agricultural growth stage, restoring a time sequence rule of crop growth, and dynamically marking a time window of a key abnormal event so as to lock a damage-causing action interval; quality inspection and transportation parameters are mapped into a system trajectory by combining a phase-space reconstruction technology, and a target growth stage associated with a biological dynamic rule is screened; through contribution weight analysis and stress resistance data fusion, identifying a main cause damage factor and a synergistic effect relationship thereof; and finally, the tracing path is dynamically corrected based on a historical verification result, and the threshold value and the weight of the agricultural rule base are optimized, so that the accuracy and the credibility of agricultural whole industry chain tracing are remarkably improved.

The invention provides an intelligent logistics distribution path optimization method under multiple constraint conditions, and relates to the technical field of logistics distribution, and the method comprises the steps: constructing a constrained graph model according to a time window, vehicle information and real-time traffic API data; performing initial path planning by adopting an improved genetic algorithm; performing dynamic path adjustment according to the initial path set and the real-time traffic API data; and in combination with the optimized path set and customer preference information in the order information, screening an optimal solution through a plant rhizome growth optimization algorithm, and then outputting a final path optimization strategy according to a preset rule engine. According to the method, a plant rhizome optimization algorithm is adopted, a biological growth rule is simulated to realize multi-target co-evolution, and customer preference and task migration flexibility are considered while premature convergence is avoided; through flexible adjustment of constraint conditions and algorithm parameters, the method can adapt to more scenes, and can still maintain stable solving capability under the condition of continuous congestion or sharp increase of orders, thereby remarkably improving the anti-risk capability of a logistics system.

The invention relates to the technical field of biological medicine, in particular to a dynamic fermentation tank control system for producing a diabetes intestinal microecological regulating preparation. The system comprises a fermentation tank sensing feedback control network establishment module, a fermentation tank growth earlier-stage nutrition supply control module, a fermentation tank growth later-stage adjustment control module and a fermentation tank metabolism process environmental condition control module, and can generate an embedded sensing feedback control network by installing a sensor and being connected with a central feedback control system. The sugar source supply quantity, the nitrogen source supply quantity, the temperature, the pH value, the dissolved oxygen concentration and the oxygen and carbon dioxide gas proportional flow corresponding to the fermentation tank are synchronously monitored in real time, so that supply cooperative dynamic control and fermentation growth cooperative dynamic control are carried out, and meanwhile, metabolism environment condition cooperative dynamic control is carried out; therefore, the cooperative control work of the microbial growth environment conditions is executed. By optimizing environment control in the fermentation process, efficient production of the intestinal microecology regulating preparation can be achieved.

A dry eye composition containing hypochlorous acid and a demulcent. The demulcent can be polyvinylpyrrolidoe with a molecular weight of 30-50 kDa. The composition can be applied to the surface of the eye with a dropper device or a spray dispenser. Critically, hypochlorous acid is stable in the dry eye composition and maintains its effectiveness at preventing microbial growth.

The invention relates to a control method for efficient culture of photosynthetic organisms, which realizes efficient growth of phycomycetes photosynthetic organisms by intelligently adjusting illumination and culture environment temperature. The control method for the temperature condition of the culture environment comprises the following steps: (1) monitoring the temperature in real time, regularly reading data of a temperature sensor, and transmitting the data to a central control unit; (2) setting a corresponding difference allowable threshold value according to the temperature parameter, wherein the threshold value is correspondingly set according to different biological growth conditions; and (3) after the optimal temperature growth condition is obtained, generating a specific threshold value corresponding to the current temperature environment, converting the threshold value into a control instruction, transmitting the control instruction to a temperature control unit, correspondingly controlling the temperature in the culture equipment, and carrying out constant monitoring on the temperature. By intelligently adjusting illumination and controlling the temperature of the culture environment, environment parameters can be more accurately controlled, it is ensured that photosynthetic organisms are always in the most suitable growth conditions, and the growth speed and quality of the photosynthetic organisms are improved.

The invention discloses a method for realizing municipal sewage denitrification by combining pre-oxidation with a nano zero-valent iron loaded activated carbon carrier, and aims to solve the problems of slow growth speed of iron ammonia oxidation microorganisms, poor denitrification effect and the like in an iron ammonia oxidation process. The water treatment method comprises the following steps: 1, adding ferrate into municipal sewage to carry out pre-oxidation treatment, and adding polymeric ferric sulfide to carry out enhanced coagulation treatment; 2, inoculating mixed sludge into the SBR bioreactor, wherein the mixed sludge is composed of anaerobic ammonia oxidation granular sludge and municipal sludge; 3, introducing inert gas into the SBR reactor; and 4, introducing the pre-oxidized and coagulated sewage supernatant as inlet water into an SBR (Sequencing Batch Reactor) inoculated with sludge, and regularly adding carbon-loaded nano zero-valent iron into the SBR to complete denitrification of the municipal sewage. According to the invention, ferrate is added into municipal sewage for pre-oxidation through the front end, so that partial removal of organic matters and phosphorus is realized, and nitrogen removal of sewage is realized in combination with an activated carbon carrier loaded with nano zero-valent iron at the rear end.

The invention relates to the technical field of microbiological detection and image detection, and provides a microwell plate microbiological growth state detection method, system and equipment based on artificial intelligence. The system comprises an image acquisition module, an image segmentation module, a data set construction module, an image data enhancement module, an image classification module, a classification result determination module and a reasoning module, and is used for detecting whether bacteria grow in the microwell plate; or the system comprises an image regression module and a regression error evaluation module and is used for detecting the biomass of the thalli. According to the invention, a self-built photographing device can be adopted to realize on-site direct automatic detection without sampling, so that high-throughput automatic accurate analysis of the growth state of microorganisms in the microwell plate can be conveniently and quickly realized, experiment consumables and biological samples can be saved, the contamination risk can be reduced, and the experiment efficiency can be remarkably improved. Therefore, the working intensity of detection personnel is reduced, and the method has wide application value. Meanwhile, the complexity of detecting the growth state of the microorganisms in the pore plate is reduced, and popularization and application are facilitated.

The utility model provides a fertilizing device for improving barren soil, and relates to the technical field of agricultural machinery. The soil crushing assembly is connected with one end of the first supporting base; the fertilizing assembly is connected with the other end of the first supporting base; one end of the moving assembly is fixedly connected with the bottom face of the first supporting base. Original barren soil is cut and smashed through the soil smashing assembly, the porosity of the soil is increased, the ventilation condition of the soil is improved, growth and development of soil organisms are facilitated, fertilizer is applied to the soil through the fertilizer applying assembly, fertilizer can be applied to the interior of the soil, and the soil can be converted into soil organic matter; the soil porosity is further increased; and the soil ventilation condition is improved.

The utility model relates to an artificial dental implant in a planting area with insufficient bone height, which is integrally mounted in an alveolar bone planting hole and comprises an anchor bearing and a connecting column, the upper end of the connecting column is connected with an abutment for mounting a dental crown, and the lower end of the connecting column is vertically fixed at the top of the anchor bearing; the anchor seat sinks into the bottom of the alveolar bone implanting hole, the plane area of the anchor seat is increased compared with that of the connecting column, the anchor seat is provided with a plane bottom surface, the bottom surface is in contact with the bottom wall surface of the alveolar bone implanting hole, and the side surface of the anchor seat is tightly attached to the side wall of the alveolar bone implanting hole; and the space of the alveolar bone implanting hole at the side part of the connecting column is filled with autologous bone powder. The implant has the advantages that 1) the thinner connecting column is matched with the larger anchor seat to form a countersunk head anchor, and the implant is anchored in an alveolar bone by utilizing biological growth, so that the effect of enough stability can be achieved although the embedding depth is low, and the trauma risk of a nerve tube in an operation is solved; and 2) the bottom of the implant provided by the utility model is of a flat bottom structure, so that the occlusion stress is effectively dispersed, and the use risk is solved.

The invention provides a fresh tilapia mossambica block preservative and a preparation method thereof, the fresh tilapia mossambica block preservative comprises the following raw materials: natural plant extract, modified biological polysaccharide, organic acid, natural antibacterial peptide, a humectant, deionized water and the like, and propolis extract and astaxanthin can be selected to enhance the effect; wherein the natural plant extract is corncob, zingiber mioga and tartary buckwheat bran extract; the modified biological polysaccharide is obtained by modifying chitosan quaternary ammonium salt, laminarin, cell wall polysaccharide and carboxylic acid. The fresh-keeping agent is prepared through ultrasonic mixing, multilayer electrostatic deposition and other technologies, through the synergistic effect of all the raw materials, a multilayer coating structure is formed through electrostatic deposition, microbial growth can be inhibited, gas exchange can be controlled, water loss can be reduced, the fresh-keeping period of tilapia mossambica blocks can be effectively prolonged, and the quality of the tilapia mossambica blocks can be kept.

A liner mat for waste pit management and drilling fluid recycling at well sites is described. The liner mat includes an adsorbent layer and a base layer. The adsorbent layer includes chitosan and polyhydroxyalkanoate (PHA). The base layer includes polylactic acid (PLA). In some cases, the base layer includes hydroxyapatite (HAp). The adsorbent layer contacts the drilling fluid. The adsorbent layer can mitigate microbial growth and adsorbs at least a portion of pollutants from the drilling fluid. The base layer provides structural support and resistance against mechanical stress and tearing.

The invention provides a composite acrylic acid low-surface-energy antifouling coating, a preparation method and application, and belongs to the technical field of marine antifouling materials, the composite acrylic acid low-surface-energy antifouling coating comprises a three-layer composite structure, the three-layer composite structure comprises a bottom layer, a middle layer and a surface layer from bottom to top, the bottom layer is capsaicin-loaded polymethyl methacrylate, and the middle layer is a polymethyl methacrylate surface layer. The bottom layer is made of capsaicin, the middle layer is made of pressure-sensitive adhesive activated by oxygen plasma, the surface layer is made of dihydroxyl-terminated polydimethylsiloxane, the mass ratio of the bottom layer to the middle layer to the surface layer is (23-25): 1: (23-25), and the mass content of capsaicin in the bottom layer accounts for 5.82-5.75% of the total mass; based on the bonding strength change of the pressure-sensitive adhesive generated by oxygen plasma jet and the capsaicin for effectively inhibiting biological growth, polyacrylic acid is used as a self-polishing reservoir to continuously release an environment-friendly antifouling agent; the pressure-sensitive adhesive adheres to the polydimethylsiloxane layer through the adhesive force change generated by oxygen plasma to achieve the low-surface-energy antifouling effect, synergistic gain is achieved, the composite material intervenes into the biological fouling process from multiple aspects, and the composite material copes with the marine biological fouling process jointly.

An adjusting device for a water system of a combined cycle unit comprises a controller, the combined cycle unit, a cooling water tank, a sedimentation filter tank, a medicament reaction tank, a scale inhibitor water tank, a corrosion inhibitor water tank, a sterilization algicide water tank, a diverter pump, a cooling tower, a standby water storage tower, a confluence water pump and a temperature measurement and control device. According to the device, all the parts are connected through the water conveying pipeline, cyclic utilization and dosing treatment of cooling water are achieved, water scale is reduced, the metal corrosion speed is slowed down, and microorganism growth is inhibited. When the temperature of the combined cycle unit exceeds a set threshold value, the temperature measurement and control device can send an electric signal to the controller, the controller controls the standby cooling tower to be started and pumps cooling water into the standby water storage tower to be cooled, and the cooling water is pumped into the combined cycle unit to be cooled after being cooled. And finally, cooling water is pumped back to the cooling water pool through a water pump, and a circulation period is completed.

The invention provides a method for preparing beef jerky through synergistic fermentation of a mixed microbial fermentation agent and spices, and belongs to the technical field of microbial fermentation and beef food deep processing. The spices are used for pickling the beef, the flavor of the beef is improved, the mixed microbial leavening agent is added for fermentation, macromolecular substances such as protein and fat in the beef are decomposed in the growth and reproduction process of microorganisms, and substances such as micromolecular peptide, amino acid and fatty acid which are better absorbed are generated; the nutritional value, flavor and quality of the beef jerky can be remarkably improved, meanwhile, microbial fermentation acid production effectively inhibits growth of other microorganisms, and the safety of the beef jerky is improved.

The invention relates to the technical field of aquaculture, and discloses a growth monitoring system for aquaculture organisms, and the system comprises a data collection module which is used for collecting water quality parameters, organism growth information and external environment data in real time; the data processing module is used for cleaning, denoising, fusing and normalizing the acquired data; the sensitivity analysis module is used for analyzing the influence of water quality parameters on biological growth and identifying the parameters; the water quality growth modeling module is used for establishing a nonlinear relation model of water quality parameters and biological growth; and the abnormity detection module is used for detecting abnormal modes of water quality or biological growth and triggering an alarm. According to the method, the water quality parameters and the biological growth information are collected in real time, the data processing and analysis technology is combined, the breeding environment and the feeding strategy can be dynamically optimized, and therefore the biological growth speed, the feed utilization rate and the overall breeding efficiency are remarkably improved.

The invention relates to the technical field of preparation of natural food preservatives, in particular to a method for preparing a lactobacillus fermentation product by using whey permeate. According to the present invention, the lactic acid bacteria fermentation product is prepared by using the specific plant lactobacillus (Lactobacillus plantarum) LW11 with the preservation number of CGMCC No.34365, such that the good sterilization and antibacterial ability is provided, and the growth of microorganisms can be effectively inhibited; the bacteriostasis test method of the whey permeate leavening can effectively and rapidly test the anticorrosion inhibition effect of the whey permeate leavening.

The invention relates to the technical field of simulation control, in particular to a water quality adaptability simulation control method based on a fishery breeding scene. The method comprises the following steps: acquiring real-time water quality monitoring data, cultured organism growth state data and environmental meteorological data corresponding to a fishery culture water area, performing standardized preprocessing, and constructing a water quality-organism-environment multi-dimensional incidence matrix; constructing a water quality adaptability simulation model by using the water quality-biology-environment multi-dimensional incidence matrix, simulating corresponding water quality parameter evolution processes under different environment variable combinations, and generating a water quality dynamic simulation data set; determining an optimal water quality parameter interval based on the water quality dynamic simulation data set; according to the optimal water quality parameter interval, a dynamic regulation and control strategy is formulated for comparative analysis, and a water quality regulation and control deviation value is generated; based on the water quality regulation and control deviation value, driving water quality regulation equipment corresponding to the fishery breeding water area to execute adaptive control operation and display. According to the invention, the water quality control efficiency of fishery breeding can be improved.

The invention discloses a preparation method and application of a biomass carbon dot chitosan-based preservative film. The preservative film is prepared by taking chitosan and tea polyphenol carbon dots as main raw materials and taking glycerol as a plasticizer as an auxiliary material through a solution casting method. The preparation method comprises the following specific steps: synthesizing tea polyphenol carbon dots through a hydrothermal method, dissolving chitosan in a 1% acetic acid aqueous solution, adding glycerol and the tea polyphenol carbon dots, uniformly stirring, ultrasonically defoaming, uniformly coating to form a film, and drying at 40 DEG C for 6 hours to obtain the preservative film. The preservative film has excellent antibacterial, antioxidant and moisturizing properties, can significantly prolong the preservation period of perishable food such as salmon, inhibit the growth of microorganisms and maintain the nutrition and taste of the food, is environment-friendly and degradable, and reduces the use of chemical preservatives. The preparation method is simple, low in cost, suitable for large-scale production and capable of being widely applied to fresh food packaging, and a green solution is provided for development of a food preservation technology.

The invention relates to the technical field of meat food safety production monitoring and management, in particular to a digital visual meat food safety production monitoring and management system. Comprising a data acquisition and binding unit used for acquiring environment time sequence data and static physicochemical data associated with a unique identity identification code of each batch of meat products; the environmental stress modeling unit is used for calculating to obtain a comprehensive environmental stress factor; the microorganism growth prediction unit is used for calculating to obtain the total quantity of predicted microorganisms; the dynamic risk assessment unit is used for calculating to obtain a dynamic safety risk index; and the risk early warning and decision support unit is used for generating a risk level signal, and solving based on a preset critical risk threshold to obtain a predictive remaining shelf life so as to support scheduling decision. According to the system, a solid data foundation is laid for dynamic, continuous and prospective microbial risk assessment of the whole production chain, and remarkable technical progress is realized.

The invention relates to the technical field of microbial fermentation, in particular to a microbial fermentation control system based on an intelligent sensor, and the system comprises a data collection module which is used for periodically collecting environment information and reactant information in a fermentation tank; the data analysis module is used for constructing a fermentation coupling model based on the information change condition of reactants in the fermentation tank in the target time period, constructing a microorganism growth curve according to the environment information change condition, and determining a microorganism growth key area based on the microorganism growth curve; the data judgment module is used for determining a microbial fermentation process based on the fermentation coupling model and the microbial growth key area, and judging whether microbial fermentation meets a preset standard or not according to the microbial fermentation process; and the control and adjustment module is used for determining a control and adjustment mode of the fermentation tank based on a judgment result that the microbial fermentation process does not meet the preset standard. The microbial fermentation environment can be accurately controlled, so that the fermentation effect and the fermentation efficiency are improved.

The invention relates to the technical field of aquaculture, and discloses a marine product seedling raising accurate feeding control system which comprises an intelligent recognition module, a data analysis and decision module, an accurate feeding execution module, an environment monitoring module and a remote control and information management module. Through a high-definition camera and a computer vision processing unit of the intelligent identification module, key information such as the body type, the number and the activity state of the fry is accurately identified by adopting a deep learning algorithm. The big data analysis unit is combined with fry growth stages, types and density factors, a machine learning technology and a preset biological growth model are used for accurately calculating the real-time feed demand of each area, and the decision making unit generates an accurate feeding strategy according to the real-time feed demand. And a feeder of the precise feeding execution module realizes timed, quantitative and fixed-point feeding according to the strategy, so that the problem of inaccurate feeding amount caused by experience judgment in a traditional feeding mode is effectively avoided, the feed waste is greatly reduced, and the feed utilization rate is remarkably improved.

The invention discloses a photobioreactor device for microalgae culture, and relates to the technical field of biological growth containers, the photobioreactor device comprises a frame, a mounting rack I, a controller and an incubator shell, a reaction barrel is rotatably arranged in the incubator shell, and a plurality of lantern boxes are sequentially arranged in the reaction barrel from top to bottom; the top of the outer side of each lantern box is provided with a drainage ring, the bottom end of the bottommost lantern box is fixedly provided with a fourth flow guide pipeline, and a plurality of first exhaust pipes used for releasing pressure in the reaction barrel are internally provided with sampling assemblies. Under the conditions that algae cultivation is not affected and waste gas leakage is little, algae samples are obtained from different positions in the photobioreactor device for multiple times, and the culture effect of the photobioreactor device can be conveniently detected.

The invention discloses a food freezing fresh-keeping solution which is subacid electrolyzed water containing sodium chloride with the mass concentration of 5-10%, calcium chloride with the mass concentration of 1-5%, herba houttuyniae polysaccharide with the mass concentration of 0.5-1% and tamarind polysaccharide with the mass concentration of 0.1-1%. The fresh-keeping liquid utilizes the synergistic effect of all the components, effectively inhibits the growth of microorganisms, maintains the nutritional ingredients, taste and appearance of food, prolongs the fresh-keeping period, and the components are green and safe. The fresh-keeping agent can be applied to freezing and fresh-keeping of foods such as fruits and vegetables, and is used for freezing and storing after soaking or spraying. The problems that an existing freezing preservation technology is poor in safety, poor in preservation effect and the like are solved, and good application prospects are achieved.

The invention belongs to the field of field remediation functional materials, and particularly relates to a preparation method and application of a chelating iron agent for remediation of organic contaminated soil. The preparation method comprises the following steps: firstly, preparing a chelating agent aqueous solution, adding ferrite under a continuous stirring condition to carry out chelation reaction, then adding organic acid to carry out stabilization treatment, finally adding an activating auxiliary agent fulvic acid, uniformly mixing, and adjusting the pH value of the solution to a required value to obtain the chelating iron agent. The chelating iron agent can be used for activating an oxidizing agent during in-situ / ex-situ remediation of an organic polluted site, and has the advantages that the chelating iron agent is environment-friendly, the ferrous ion stability is good, the contact reaction with the oxidizing agent is mild and controllable, iron precipitates are not easy to form, and the growth and metabolic activity of indigenous organisms are stimulated.

The invention discloses an ecological restoration device for promoting assimilation and purification of plankton by direct-drive rotary oxygenation in the field of ecological restoration, which comprises an aeration platform, a purification unit, a floating bed for planting aquatic plants and a carrier filler for microbial adsorption, an energy storage unit, a water supply unit, a water supply unit and a water supply unit, comprising a vertical wind driven generator, a solar power generation panel and an energy storage battery, and the control unit comprises a controller and a dissolved oxygen monitoring probe used for monitoring dissolved oxygen in a water body; the energy storage battery supplies energy to the control unit and the air blower. The invention provides an ecological restoration device for promoting assimilation and purification of plankton through direct-drive rotary oxygenation, the device can be directly driven to rotate by using reaction torque of aeration, the device not only can reduce loss of energy conversion, but also can recover energy of aeration airflow, and a controller intelligently controls oxygenation and aeration and adjusts the growth microenvironment of aquatic organisms, so that the ecological restoration device is suitable for ecological restoration of aquatic organisms. The assimilation purification effect is achieved.

The invention provides a nutrient solution for promoting coal rock in-situ biogasification as well as a preparation method and application of the nutrient solution. The nutrient solution comprises an inorganic salt culture medium and a synergistic culture medium; the dosage ratio of the inorganic salt culture medium to the synergistic culture medium is 1L: (2.4-4.3) g. The inorganic salt culture medium comprises an electron acceptor, a nitrogen source, a phosphorus source, a stabilizer, an enzyme cofactor, a buffering agent and trace metal mother liquor. The synergistic culture medium comprises peptone and a yeast extract. The nutrient solution can stimulate growth of microorganisms, promote continuous gas production of a coal seam and improve the gas production rate and the gas production rate; the nutrient solution does not need to consider coal seam temperature change, is low in cost and has the advantages of being green and environmentally friendly.

The present application relates to a preservative-free anti-aging soothing composition containing high mountain plant extract and multiple fermentation filtrate, belonging to the technical field of cosmetics. The composition comprises high mountain plant extract complex, multiple fermentation filtrate, anti-aging active and vegetable oil. The organic acids in the multiple fermentation filtrate form a natural buffer system, maintaining a weakly acidic environment to inhibit microbial growth; at the same time, the natural components in the fermentation filtrate provide protection for nicotinamide mononucleotide and ergothioneine, delaying their degradation. The present application does not need to add additional preservatives, and has the functions of anti-aging, soothing and self-preserving.

The invention discloses a method for improving anaerobic gas production stability of kitchen waste by adding carbon and iron materials in a combined mode, and the method comprises the following steps that S1, after the kitchen waste is fully smashed, the kitchen waste is added into an anaerobic reactor to be subjected to anaerobic fermentation methane production treatment; s2, a certain amount of biochar is added into an initial system for producing methane through anaerobic fermentation of the kitchen waste, a mixed solution is formed through mixing and stirring, and the effect of improving the anaerobic fermentation stability is obvious after the reaction; and S3, adding a certain amount of ferroferric oxide into the mixed solution, stirring and carrying out anaerobic digestion reaction so as to improve the enzyme activity of microorganisms and increase the biogas production rate of biogas. The biochar and the ferroferric oxide are added in the initial stage of anaerobic fermentation, so that the inhibition effect of harmful substances on microorganisms can be relieved, growth sites and nutrient elements are provided for the microorganisms, the growth of the microorganisms is accelerated, the activity of the microorganisms is improved, and the generation of methane is promoted; further, the biogas production rate of biogas is improved, and the stability of a reaction system is maintained.

An estimation device 1 comprises: a model generation unit 10 that, in each time step, calculates an OBM value including the growth rate of marine microorganisms using an ocean physical value calculated from an ocean physical model and an ocean biogeochemistry model (OBM), and trains a learning model for estimating the growth rate of marine microorganisms in each time step from the relationship between the ocean physical value and the OBM value in each time step; and an estimation unit 20 that, in each time step, calculates an OBM value other than the growth rate of the marine microorganism using the ocean physical value calculated from the ocean physical model and the OBM, and uses the learning model to estimate the growth rate of the marine microorganism from the ocean physical value and the OBM value other than the growth rate of the marine microorganism.