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65 results about "Chaetoceros" patented technology

Chaetoceros is probably the largest genus of marine planktonic diatoms with approximately 400 species described, although a large number of these descriptions are no longer valid. It is often very difficult to distinguish between different Chaetoceros species. Several attempts have been made to restructure this large genus into subgenera and this work is still in progress. However, most of the effort to describe species has been focused in boreal areas, and the genus is cosmopolitan, so there are probably many tropical species still undescribed. Some species are known from the fossil record, from the Quaternary of Sweden. It is the type genus of its family.

Automatic chaetoceros and non-chaetoceros sorting method based on microscopic images

The invention provides an automatic chaetoceros and non-chaetoceros sorting method based on microscopic images. The automatic chaetoceros and the non-chaetoceros sorting method based on the microscopic images includes the steps: (1) extracting binarization images of target cells of the algae from the microscopic images of the algae; (2) setting the binarization image height, namely the line number as three hundred pixels regularly, and zooming the rows according to the original proportion; (3) performing closing operation for the images by utilizing a round structure element with a radius of five pixel width; (4) extracting skeleton from the binarization images by utilizing a distance transforming refinement algorithm; (5) extracting node number and endpoint number: extracting node assembly and endpoint assembly of the skeleton, and then acquiring the node number and the endpoint number; (6) judging whether the skeleton is the chaetoceros or not according to the criterion whether the requirements that the node number is not less than 5 and the endpoint number is not less than 5 are met or not. The automatic chaetoceros and the non-chaetoceros sorting method based on the microscopic images is high in accuracy, clear in development, very obvious in economic benefit and social benefit, lays a base for further algae sorting recognition, improves further recognition ratio for the automatic sorting of the algae, and can provide effective instructions and assistance for various algae monitoring personnel and researchers in the front line.
Owner:OCEAN UNIV OF CHINA

High-density culture process of autotrophic oil-producing microalgae

The invention relates to a high-density culture process of autotrophic oil-producing microalgae. A fermentation method combining a partition method and a two-step method is adopted, CO2 waste gas discharged from a thermal power plant is used as a carbon source, municipal sewage after living contaminant or miscellaneous algae filtering removal is used as a culture medium, the autotrophic oil-producing microalgae is cultured in a high-density way for growth, perfectly, sea salt is added into the municipal sewage for simulating sea water so that the permeation pressure is increased, the living contaminant or miscellaneous algae pollution is prevented, and the autotrophic oil-producing microalgae is selected from one kind or several kinds of materials from autotrophic chlorella, nannochloropsis salina, botryococcus braunii, chaetoceros gracile, marine green algae, isochrysis galbana, nitzschia closterium, phaeodactylum tricornutum, dunaliella and prism-shaped algae. When the high-density culture process is adopted, high removal efficiency of nitrogen, phosphorus and CO2 can be realized, in addition, the algae concentration, the grease content and the protein content are high, the double effects of environment protection and biological resources production are reached, the operation is simple, convenient and fast, the cost is low, no pollution is caused, social and economic integrated benefits are high, and the high-density culture process is suitable for large-scale popularization and application.
Owner:JIANGNAN UNIV

Breeding method of glyptocidaris crenularis offspring seed

The invention discloses a breeding method of a glyptocidaris crenularis offspring seed, comprising the following steps of: cultivating chaetoceros in a high temperature season, centrifugally concentrating and then storing at low temperature; beginning to cultivate benthic diatoms 10-20 days before collecting seedling of glyptocidaris crenularis, and selecting an individual with a shell diameter of at least 8 cm, health and no damage and favorable gonadal development at 2-3 ages as an affinity choline; inducing the affinity choline to lay eggs by using a KCl solution stimulus method, artificially inseminating, then hatching the germ cells in ponds according to the density of 3-5 per ml, micro-aerating in the hatching period and timing-stirring, wherein the hatching water temperature is 15-18 DEG C; selecting healthy larvae at the upper layer, breeding according to the density of 0.4-0.6 per ml, feeding the chaetoceros stored at low temperature in the breeding period; placing the grown infantile choline into a seedling-collecting pond internally provided with a corrugated plate where the benthic diatoms grow, and breeding the choline to reach the diameter of 3-5 mm; and peeling the infantile choline from the corrugated plate to be cultivated, and cultivating the infantile choline to grow into a young choline with the diameter of more than 1 cm, at this moment, the young choline can be used for artificial culture as the offspring seed.
Owner:DALIAN HAIBAO FISHERY

Runway type bioreactor applicable to sunshine factorization

The invention discloses a runway type bioreactor applicable to sunshine factorization. The runway type bioreactor is used for cultivating isochrysis galbana, phacodactylum tricornutum, chaetoceros gracilis, chaetoceros mulleri and haematococcus pluvialis on a large scale and comprises a cultivating device body in the shape of a closed runway pond. A nutritive salt supplementing pipe and an injected water supplementing pipe are arranged on the side walls of the inside of the runway pond and are respectively connected with an automatic fed-batch nutritive salt supplementing device and a water treatment plant of a heat exchanger; two CO<2> gas supplementing pipes are respectively arranged on two sides of the inner bottom of the runway pond and are connected with CO<2> gas supplying devices, two screw pump mechanical propulsion devices are arranged at corners of the inside of the runway pond, a partition plate is arranged in the center of the inside of the runway pond, and buckles are respectively arranged on two outer sides of the runway pond. A stainless steel support is arranged at the outer bottom of the runway pond, and an LED lamp which is an auxiliary light source is arranged on the support; the runway pond is further provided with double-surface runway cleaning devices. The runway type bioreactor has the advantages that the illumination surface-area-to-volume ratio of algae liquid in the cultivation pond can be increased, accordingly, the illumination utilization rate of the bioreactor and the cultivation density can be increased, and the runway type bioreactor is favorable for improving the factorization micro-algae cultivation efficiency.
Owner:OCEAN UNIV OF CHINA

Bostrychus sinensis feeding method and acoustic domestication feeding system thereof

The invention discloses a bostrychus sinensis feeding method and an acoustic domestication feeding system thereof. The method is characterized in that excellent diatom is inoculated after water changing, chaetoceros is selected as the diatom, the feed feeding is decreased progressively according to the levels of 8%, 7%, 6%, 5% and 4% of the total weight of fish, each level is fed for 3 days, 15 days serve as a period, after 15 days, 100% water change is carried out, a fishing pond is cleaned, weighing is carried out, the above operation is repeated, an acoustic domestication feeding system isadopted for feeding during feeding, the acoustic domestication feeding system comprises a support frame, and a hydrophone and a camera which are positioned in a culture pond, four feeding machines, aloudspeaker and a controller are arranged on the support frame, and the feeding machines, the loudspeaker, the hydrophone and the camera are all electrically connected with the controller. The methodhas the functions of improving the feeding efficiency, reducing the feed loss, adjusting the pH value of the water body and inhibiting the growth of bacteria, so that the fatality rate of the bostrychus sinensis is reduced, and the survival rate of the bostrychus sinensis is increased.
Owner:ZHEJIANG MARICULTURE RES INST

Method for industrially and ecologically breeding litopenaeus vannamei shrimps in indoor space

The invention discloses a method for industrially and ecologically breeding litopenaeus vannamei shrimps in indoor space. The method includes an industrially and ecologically indoor breeding process and a management method of the litopenaeus vannamei shrimps. According to the method, a traditional shrimp breeding technique is innovated, healthiest young litopenaeus vannamei is selected, the shrimps are stocked by the aid of the most reasonable density and fed by the aid of diatoms such as micro-thalassiosira rotula and chaetoceros mulleri and high-quality natural organism baits such as fairy shrimp nauplii, part of artificial feed and baits are replaced, nutrition can be enhanced, immunity can be improved, water quality change of a shrimp pond can be effectively controlled, self-cleaning capacity of water is enhanced, growth of harmful bacteria is restrained by the aid of beneficial bacteria such as lactic acid bacteria, bacillus and pseudomonades, residual feed, shrimp remains and thelike are decomposed, and a stable ecological system of the shrimp breeding pond is built. According to the method, healthy, rapidly-grown, high-stress-resistant and high-quality shrimps can be bred,shrimp breeding survive rate can be increased, shrimp breeding cost is saved, and the shrimp quantity requirements of clients are met, so that economic benefits are improved.
Owner:海南中正水产科技有限公司

Penaeus vannamei breeding method

the invention discloses a penaeus vannamei breeding method. The method comprises the following steps: firstly, injecting seawater into a disinfected pond, wherein the pond communicates with a water circulation device; before throwing young penaeus vannamei, performing inoculation by using 10-15 million/mL of chaetoceros and 10-15 million/mL of dunaliella salina, wherein the chaetoceros and the dunaliella salina are cultivated by using a nutrient solution, and the nutrient solution comprises the following raw materials: ferric chloride hexahydrate, ethylenediamine tetraacetic acid disodium salt, copper sulfate pentahydrate, sodium molybdate dihydrate, zinc sulfate heptahydrate, cobalt chloride hexahydrate, manganese chloride tetrahydrate, vitamin B1, vitamin H, vitamin B12, vitamin B6 and sea salt; after the water quality is stable, throwing 450-550/m<2> of shrimp fry into the pond; feeding 50-500 grams of feed for every ten thousand of shrimps, wherein 15-20% of the shrimp feed is directly eaten by the shrimps, and the balance of the feed is decomposed by a water treatment device to serve as the nutrition of the chaetoceros and dunaliella salina; meanwhile, keeping the density of the chaetoceros and the dunaliella salina in the pond to be 10-15 million/mL; and performing harvesting in 40-70 days after the shrimp fry are thrown. The penaeus vannamei breeding method provided by the invention is high in breeding survival rate, large in prawn specification and large in yield.
Owner:海南良之缘生物科技有限公司

Artificial breeding method of giant trevally

The invention provides an artificial breeding method of giant trevally. The artificial breeding method of giant trevally comprises the following steps that healthy female and male giant trevally withthe age more than three are selected as parents; net cage breeding is selected, and the female and male giant trevally are fed with fodder A and fodder B every day; when sexual maturity of parent fishis achieved, natural spawning and fertilization are carried out, fertilized ovum is fished out and placed into a breeding pool for hatching, pool water is inflated slightly, and larva fish is obtained; 10000-12000 thousand/mL dunaliella salina, 3000-6000 thousand/mL chaetoceros and 7000-9000 thousand/mL chlorella are inoculated, and the larva fish is bred; and the female and male giant trevally are fed with fodder C every day five days later, and fish fry is obtained after breeding for 20-30 days. By adopting the artificial breeding method of giant trevally, the oviposition quantity of the parent fish is high, the fertilization rate can reach more than 98%, the hatching rate of the fertilized ovum reaches more than 94%, the quality of the fertilized ovum is high, the survival rate of breeding the larva fish is high, the fish fry yield of the giant trevally is large, the breeding efficiency is high, and the breeding quality is good.
Owner:HAINAN CHENHAI AQUATIC CO LTD

Chaetoceros minutissismus concentrated culture solution and culture method for culturing Chaetoceros minutissismus

The invention discloses a preparation method of a Chaetoceros minutissismus concentrated culture solution and high-efficiency culture technology, belonging to the aquaculture field. The prepared Chaetoceros minutissismus concentrated culture solution can be stored and transported conveniently and can be produced conveniently in a factory-like, standard and specialty manner, microconstituents can be quantified accurately, and a traditional f / 2 nutritive salt formula is optimized, and the constituents are reasonable and balanced and are beneficial to the rapid growth of the microalgae; a plastic purified water barrel is used for breeding Chaetoceros minutissismus, the operation is flexible, pollution cannot be caused easily, the washing operation is convenient, and the plastic purified water barrel cannot be scratched easily, and is low in cost; different illuminations and temperatures are provided in early, middle and later culture periods, nutritive salt is supplemented in the later culture period to promote the continuous and rapid growth of the Chaetoceros minutissismus, and the algal yield is improved by 120%; and three plastic barrels are connected in series for breeding, introduced gas is utilized for three times, and thus energy and resources are saved.
Owner:LINYI UNIVERSITY

Method for improving water binding capacity of frozen dish of beef through microbial fermentation multilevel processing

The invention provides a method for improving the water binding capacity of a frozen dish of beef through microbial fermentation multilevel processing. The method comprises the steps of implementing three-section precooling on a butchered cow, gradually reducing the temperature of a precooling tank, conducting three-section ultrasonic treatment with an ultrasonic generator while precooling, cutting into slices after processing, mixing a seasoning with the beef, implementing ultrahigh pressure microwave processing, then smearing a lactobacillus bulgaricus bacterium suspension on the surface ofthe beef, then adding sodium chloride, sodium caseinate and ice water into the beef, mixing evenly, rolling and rubbing at the low temperature under vacuum, putting in an air bag after packaging undervacuum, beating and stretching the beef by inflating and exhausting air of the air bag, adding centrifuged subnatant of a chaetoceros mulleri culture solution into the beef, irradiating, then inoculating a survived Streptococcus thermophiles. strain, heating the beef, then adding a calcium stearate solution with the mass concentration of 0.0002%-0.0003%, and holding for 1.5-2 hours for gelatinization.
Owner:FUJIAN AGRI & FORESTRY UNIV

Method for breeding marine shellfish family in larval stage

The invention discloses a method for breeding a marine shellfish family in a larval stage. The method comprises the following steps that a set of external tank bodies are arranged, and an internal netcage is arranged in each external tank body; a high-level water tank for water addition is arranged at the tops of the external tank bodies, and water is discharged from the bottom of the high-levelwater tank to the internal net cages through a water outlet pipe; sinonovacula constricta larvae which are developed to trochelminth larvae are collected by a 300-mesh boulting cloth and transferred to the internal net cages; filtered and disinfected water is added to the high-level water tank and discharged into the internal net cages through the drainage pipe separately, and the internal net cages are oxygenated for breeding; a mixed solution of chrysophyceae and chaetoceros is added to the high-level water tank three times in total every day in the morning, afternoon and evening and discharged into the internal net cages through the drainage pipe; when water replacement and cleaning are needed in the breeding process, water discharge valves at the bottoms of the external tank bodies areopened for water replacement and pond overturning and emptying treatment until breeding is completed, it is only required to add the mixed algae solution to the high-level water tank in the breedingprocess, the labor intensity is reduced, and the problems in the background art are effectively solved.
Owner:SHANGHAI OCEAN UNIV
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