50 results about "Thaliacea" patented technology

The invention discloses a chlorophyll calculating method based on remote-sensing images and a water ecological model. The method comprises the steps of 1, based on remote-sensing image data, data preprocessing like radiometric calibration, atmospheric correction and image cropping and fusing is conducted; 2, a remote-sensing water quality inversion model is constructed, and respective inversion ofindexes like water temperature and chlorophyll concentration is achieved; 3, various index concentrations and future weather change which are obtained through inversion of the remote-sensing images are regarded as input conditions of the water ecological model, and the chlorophyll concentration dynamic change process of a water area environment is simulated within a future duration caused by change like nutritive substance conversion and algae growth and death under a future weather change condition. The chlorophyll calculating method is applicable to water environment monitoring and predicting, and has popularity and high calculation precision, chlorophyll concentration prediction and simulation of a large area of a drainage basin are achieved in real time under the condition of the limited monitoring site, and an integrated chlorophyll concentration predicting system integrating the remote-sensing images and the water ecological model can be formed.

The invention relates to a benthonic animal-algae-aquatic plant-fish based river water ecological environment self-remediation method. The method is to overcome problems of river water ecological environment remediation methods at present, namely short effect duration, high costs and easy generation of secondary pollution. The method includes 1) evaluating the degree of pollution of a river, 2) planting reed and seeding algae, 3) throwing in plankton and benthic mollusks, 4) planting submerged plants, 5) throwing in shrimps, herbivorous fishes, omnivore fishes and filter-feeding fishes, 6) throwing in carnivorous fishes, and 7) harvesting the reed and the submerged plants before the reed and the submerged plants die, catching the benthic mollusks and the shrimps, and catching the fishes after two years. The method is long in effect duration, low in cost and free of secondary pollution and is applied for the field of river water pollution remediation.

The invention discloses a nuttallia olivacea larva large-scale breeding method, relates to the technical field of aquaculture, and particularly belongs to the nuttallia olivacea larva large-scale breeding method. The method is characterized by comprising the following steps of four-grade bait preparation, wherein a first-stage unicellular alga species starts to be cultivated from December to January in winter or 3-4 months before spawning of parent shellfish, second-stage alga species is prepared from February to March in spring, a three-stage alga solution is produced from March to May in spring, and large-scale unicellular bait is produced in a pond from April to August in spring and summer; parent shellfish collection and spawning; fertilized egg hatching; larva breeding. The method hasthe advantages that the method is not limited by natural conditions, the yield is high, and large-scale benefits are remarkable.

The invention discloses a lake-reservoir algal bloom generating mechanism time varying model optimization and prediction method based on a taboo searching algorithm and a genetic algorithm. The method comprises the steps that first, a water bloom generating mechanism time varying model is established; second, an influence factor function model base is established; third, based on the genetic algorithm, water bloom generating mechanism time varying model parameters are optimized; fourth, based on the taboo searching algorithm, a water bloom generating mechanism time varying model structure is optimized, and influence factors are analyzed; and fifth, optimum water bloom generating mechanism time varying model prediction is carried out. According to the method, a time variable is introduced into the water bloom generating mechanism model, the water bloom generating mechanism time varying model is established, so that the method is suitable for simulating a water bloom generating process and can be used for water bloom prediction, and the problem that water bloom prediction based on a data driving model is not accurate enough, and a mechanism driving model cannot predict water bloom is solved.

Crude algae oils produced by practical extraction techniques comprise a wide range of molecular species that can be characterized by advanced analytical techniques. The algae oils comprise a complex mixture of a large number of molecules having varying sizes and therefore varying boiling points, and comprise high nitrogen, oxygen, and fatty acid content, but low sulfur, saturated hydrocarbons, and triglyceride content. Hydrogen/carbon molar ratios are typically greater than 1.6. The wide range of molecular species in the crude algae oils, while unusual compared to conventional refinery feed stocks and vegetable oils, may be upgraded into fuels by conventional refining approaches such as hydrotreating and thermal treatment. Unusual behavior of the algae oils in thermal processing and/or hydrotreatment may provide a high quality product slate, with the flexibility to adjust the product slate due to enhanced cracking behavior exhibited by these algae oils.

The invention relates to an enhancement-type artificial fish reef device for protecting and promoting the growth of juvenile fish. The enhancement-type artificial fish reef device comprises a fish reef body, and is characterized in that the fish reef body is of a hollow truncated pyramid structure and comprises a top panel, a bottom panel and side panels; the top panel and the side panels are provided with juvenile fish screening devices for fish to enter the fish reef body to hide from enemies, and the juvenile fish screening devices are composed of frames fixed to openings, grid bars fixed to the frames and made of magnetic materials, and artificial seaweed wrapping the grid bars in a winding mode; a juvenile fish nutrition device is hung on the top panel of the fish reef body, and crabshell powder is contained in the juvenile fish nutrition device and can improve the immunity of the juvenile fish, promote the growth of juvenile fish and reduce the death rate of juvenile fish; algaadherence matrixes are arranged on the outer sides of the side panels of the fish reef body, and oyster shells and gravel are contained in the fish reef body and can increase the adherence area of algae, promote the reproduction of algae and further provide adequate bait for juvenile fish. The enhancement-type artificial fish reef device is low in cost, simple in structure and long in service life, and the survival rate of juvenile fish is increased to achieve the enhancement of fishery resources.

The invention relates to a coupling technique of city watercourse dredging and sequence reestablishment from a shoal to a deep pool. The coupling technique of the city watercourse dredging and the sequence reestablishment from the shoal to the deep pool is characterized in that a sequence from the shoal to the deep pool of a river is reestablished on a city watercourse crook portion where a river bank is upright and sclerotic by combining the watercourse dredging with a bottom mud solidification technique. According to the coupling technique of the city watercourse dredging and the sequence reestablishment from the shoal to the deep pool, the shoal can provide appropriate growing environment for submerged plants and aquatic animals, and the submerged plants not only can purify water and inhibit growth of algae, but also can provide good habitat environment for the aquatic animals, and thereby further improves self cleaning capacity of a watercourse; the sequence from the shoal to the deep pool can strengthen hydrodynamic force of the watercourse, improve dissolution oxygen content in a water body, mitigate anoxic status of lower layers of the city watercourse, and improve biological activity of bottom mud, and thereby improves self cleaning capacity of the water body.

The exudate of macroalage is collected and selectively dried to produce a health supplement capable of oral, topical, or transdermal delivery to benefit the health of user. The macroalage is preferably brown macroalage of the species Macrocystis pyrifera and the exudate preferably collected within 12 to 24 hours of harvest. High purity Fucoidan derived from Macrocystis pyrifera is administered in an effective amount to benefit the health of a user. Collected exudate, dried exudate or High Purity Fucoidan may be combined with other materials such as krill oil to create a synergistic boost to Antioxidant power and health benefits.

The invention relates to the technical field of image processing, provides a method and device for recognizing diatom types of extracted diatom regions, and aims at directly extracting imaged diatom region images without removing impurities in and around diatoms through complicated experimental means. The method for recognizing diatom types of extracted diatom regions comprises the following stepsof: obtaining an image of a to-be-recognized diatom; taking an alga fitting contour frame, matched with the to-be-recognized diatom, selected according to the image of the to-be-recognized diatom asa diatom ROI (region of interest); extracting a to-be-recognized diatom image corresponding to the to-be-recognized diatom from the image of the to-be-recognized diatom according to the diatom ROI; and carrying out feature recognition on the to-be-recognized diatom image so as to determine a type of the to-be-recognized diatom.

The invention discloses a method for improving water quality in deepwater areas of lakes and reservoirs and controlling cyanobacterial bloom through artificial biological carriers.The method includes the steps that A, areas are selected, wherein locations where water surface operation is easy and wind and wave avoidance is achieved are selected as construction points; B, a water surface floating platform basic framework is built, wherein a framework of a water surface floating platform is built on the bank; C, the water surface floating platform is fixed, wherein the water surface floating platform is fixed by tying underwater weights through ropes, and the parts, needed during water level raising, of the ropes are reserved; D, biological carrier materials are preprocessed, wherein the biological carrier materials are hung on nylon ropes 20 mm thick at the interval of 16 cm on the bank, and the length of the nylon ropes is the same as the internal length of the water surface floating platform.The method has high ecological benefits, is obvious in effect, free of pollution, high in continuity, good in repeatability and suitable for various kinds of water ecological repair and cyanobacterial bloom control, and provides favorable conditions for ecological reconstruction of eutrophication reservoir bays.

The invention discloses a pelagic floating fish reef based on tide and wave power generation and belongs to the technical field of marine ranch artificial fish reefs. The pelagic floating fish reef comprises a bottom-layer fish reef, two ends of the bottom-layer fish reef are connected with a floating body through steel ropes, a plurality of power generator sets are arranged on the floating body,a netting is connected between the steel ropes, and an algal spore seeder is arranged below the middle of the netting. The pelagic floating fish reef combines a wave energy and tidal energy power generation device with a floating body structure of a floating fish reef to realize primary conversion from ocean energy to electric energy and can attract fishes to gather, so that primary productivity of a sea area is improved greatly.

The invention discloses a pollution prevention and control method for ethanol consumption bacteria in an ethanol producing genetic engineering cyanobacteria culture system and belongs to the technical field of biological energy and the technical field of algal culture. The method mainly solves the technical problem about biological pollution prevention and control over the ethanol consumption bacteria in the genetic engineering cyanobacteria ethanol production process. The method comprises the steps in the ethanol producing genetic engineering cyanobacteria culture process, through a high-pH strategy that the culture system is captured through a sodium bicarbonate carbon source, and the pH value is controlled to gradually rise to 11.0 and kept at 11.0+/-0.5 in the culture process, breeding of the ethanol consumption bacteria and ethanol consumption in the culture process are inhibited. The method can provide reference for a large-scale cyanobacteria culture pollution control system, and has important significance on biology liquid fuel produced from genetic engineering cyanobacteria.

The invention relates to a method for lake purification and water ecological environmental renovation, comprising: a rope contact oxidation step, a pressurizing floating step, a waterweed cultivation island use step, and a lake pollution state analysis step, while an optimal use of a step is selected, whether comprehensively using the steps is selected: a rope contact oxidation selection step selecting objects needed to be treated and an operation method in the rope contact oxidation step; the method uses a rope contact oxidation device clears away pollutants in a lake or flowing from the outside of the lake to the inside of the lake, particularly organic matters and solid subjects (SS), uses a pressurizing floating method to clears away sediment and algae deposited at the bottom of the lake, uses the waterweed cultivation island use method to clear away nutrients and organic matters in the lake, and provides algae proliferation inhibition and places for fish oviposition and hiding, thereby renovating water ecological environment.

The invention discloses a double-wing net rack mechanism for aquaculture and an underwater net cage fish manure waste collection device. The double-wing net rack mechanism for aquaculture comprises anet curtain and double-wing nets, and each double-wing net comprises a main wing net and an assistant wing net. The underwater net cage fish manure waste collection device comprises a bottom bag and two side baffles fixed to the side face of the bottom bag to define a collection net bag with an opening in the top, and the bottom bag is formed by the double-wing net rack mechanism for aquaculture.The double-wing nets can be self-cleaned under the fluctuation action of water flow, and underwater bacteria and algae and parasites are prevented from adhering to the double-wing nets. The double-wing net rack mechanism for aquaculture and the underwater net cage fish manure waste collection device are suitable being used in for lakes, rivers, ponds and other water areas with smooth water flow for collecting manure, residual bait and other wastes in cage culture.

The invention provides a method for inhibiting algae growth by coupling modified clay with algal inhibition bacteria. The modified clay is cetyl trimethyl ammonium bromide modified sodium montmorillonite. The algal inhibiting bacteria can be lysinibacillus fusiformis J8 which is called a J8 strain for short. The J8 strain is preserved in the Guangdong microbial culture collection center on December 13th, 2017, and the preservation number is GDMCC NO. 60298. Experimental data shows that the combined application of the modified clay and the algal inhibiting bacteria (J8) has an obvious inhibition effect on algal cells, the continuous algal inhibition time can reach 168 hours, and the rebound of the number of the algae cells is avoided. The modified clay used in the method is wide in source,simple to prepare, low in cost and easy to operate; the modified clay and the algal inhibiting bacteria are combined so that the red tide can be more thoroughly inhibited; a method for inhibiting thered tide by combining the modified clay and the algal inhibition bacteria, no secondary pollution is generated, and the method is an environment-friendly method.