62 results about "China sea" patented technology

The invention relates to an aquaculture method of deep sea scallops, in particular to a breeding and propagation method for Atlantic deep sea scallops. The method comprises the steps that introduction, artificial breeding and aquaculture of the deep sea scallops are carried out, parent scallops are mature after 45-50 days maturity promoting and lay eggs, and after most larvae grow into D-shaped larvae, a bolting cloth net cage is used for selecting optimal larvae to a new pond for cultivation; the growth rate of the cultured larvae is far higher than that of the larvae cultured in a nursery ground in Quebec of Canada at the same time, eyespots are generated on most larvae 16-17 days after the larvae are fertilized, adhering substances are arranged at the 18th day, after the adhering substances are arranged for 10 days, the adhering substances are taken out and hung in natural sea ears for larva protection; the deep sea scallops meet commercial specification when the cultivated average specification reaches 8 centimeters, and the deep sea scallops achieve sexual maturity. According to the method, the Atlantic deep sea scallops are introduced into China sea areas for the first time, the scallop culture species are expanded, and construction of modern ocean ranches is promoted.

The invention relates to a hybrid breeding method for stichopus japonicus, comprising the following steps: selecting stichopus japonicus in China sea areas and in Korea sea areas as parental stichopus japonicus, respectively controlling breeding water temperature, times and time of feeding of the parental stichopus japonicus in an artificial culture, and adding yolk and pachyrhizus powder of different amounts for stimulating gonadogenesis in breeding bait containing alga powder, compound feed and holothurian vitamin to enable synchronous maturity of gonads of the parental stichopus japonicus; stimulating the parental stichopus japonicus by a shade-drying running water stimulating method, a temperature differential method and an artificial induced spawning method combined with a method of using spermia to stimulate ovum, to induce the oviposition and the spermiation of the parental stichopus japonicus; and respectively collecting the ovum and the spermia of the parental stichopus japonicus; carrying out reciprocal hybridizations to produce oosperm; and breeding according to a conventional method. The stichopus japonicus sprout cultured by the method has high survival rate, fast growth rate, good stress resistance, and strong ability of resisting mechanical damage. The process is easy and convenient, and can be operated easily, effectively shortens the period of breeding the stichopus japonicus and saves the breeding cost.

A process for culturing the Bacillus subtilis coming from sea to obtain the insecticiding product for more agricultural pests includes bioactive screening to the marine microbes in Chinese sea to obtain a high-activity Bacillus subtilis strain, and culturing it in fermenting culture medium to obtain said active insecticiding product. Its advantages are high killing activity to agricultural pests, broad spectrum, and no environmental pollution.

The invention discloses an ecological risk assessment method of a polycyclic aromatic hydrocarbon compound and a mixture thereof in a marine water environment. The assessment method comprises the following steps of determining the type and concentration of the polycyclic aromatic hydrocarbon in the marine water environment; screening the representative biological species having the flora characteristics of the creatures of the China sea area; acquiring the chronic toxicity data of polycyclic aromatic hydrocarbon in the water body of a target sea area; using a statistical extrapolation method to calculate the predicted no effect concentration of polycyclic aromatic hydrocarbon; using a joint probability curve method to calculate the level of the ecological risk of single polycyclic aromatic hydrocarbon in the water body of the target sea area; using a toxicity equivalent factor method to calculate the joint ecological risk of the polycyclic aromatic hydrocarbon mixture in the water body of the target sea area; identifying the risk of the monomer and the mixture of the polycyclic aromatic hydrocarbon according to the above results. The ecological risk assessment method of the polycyclic aromatic hydrocarbon compound and the mixture thereof in the marine water environment provided by the invention realizes the ecological risk assessment of the polycyclic aromatic hydrocarbon monomer and the mixture thereof in the China marine water environment by using the toxicity equivalent and the probability risk assessment method based on the species sensitivity distribution theory, and provides a decision basis for the marine ecological risk management of the China organic pollutants.

The invention relates to the technical field of medicines and provides a new method for separating a polysaccharide compound from mytilus crassitesta lischlk produced in the East China sea and purifying the polysaccharide compound. The invention also provides application of the polysaccharide compound in preparation of an anti-tumour drug.

The invention relates to a laurane type sesquiterpene compound or a derivative thereof extracted and separated from a sea plant Laurencia okamurai in the East China Sea, and a preparation method and application thereof. The structural formula of the laurane type sesquiterpene compound or the derivative thereof is shown as above: when R1, R2 and R3 are hydrogen at the same time, the sesquiterpene compound or the derivative thereof is laurinferol, and when R4 is hydrogen, the sesquiterpene compound or the derivative thereof is aplysin. In vitro tests show that the sesquiterpene compound or the derivative thereof has obvious pancreatic lipase inhibition activity and is expected to be applied to preparing medicaments for preventing or treating decompensation diseases including adiposis, diabetes, hyperlipoidemia, fatty liver and the like. The sesquiterpene compound or the derivative thereof can also provide a lead compound for developing the new medicaments for preventing and treating the decompensation diseases, and is significant for developing and utilizing marine biological resources of China.

The invention discloses a device for simulating a whole cataclysm process of seabed soft soil under combined effects of upper-surface typhoon waves and pushing of a shallow buried high pressure gas, which can reproduce a weakening and pneumatic inrushing cataclysm whole process of the seabed soft soil under combined effects of the upper-surface typhoon waves and the pushing of the shallow buried high pressure gas. The device mainly comprises an outer model box, a soil model box, a perforated separator, a micro jack, a pneumatic cabin, a pneumatic servo motor, a shaft lever, a torque motor, a sliding guide rail and an impeller. A key physical simulation means is provided for revealing the seabed instability and cataclysm mechanism of three major waters (the Yellow Sea, the East China Sea and the South China Sea) with typhoon waves bursting and with high-pressure biogenic gas-containing seabeds distributed widely.

The invention relates to a manufacturing method for sea cucumber essence pure powder. The method comprises the following steps: first, grinding East China Sea black sea cucumbers which are subjected to decontaminating and cleaning treatment into pulp by using a stainless steel grinder; adding the pulp into a stainless steel enzymolysis tank through a 40-mesh screen; adding tap water with the weight being 1.8 to 2.0 times weight of the East China Sea black sea cucumbers; performing heat-insulating heating at 95 DEG C for half an hour; closing steam; starting an enzymolysis tank stirring machine, and enabling the enzymolysis tank stirring machine to rotate by 30 rotations per minute; turning on enzymolysis tank jacket cooling water to decrease the temperature of materials to 45 DEG C; adding Alcalase proteolytic enzyme with the weight being 0.1 to 0.5 percent of the weight of the East China Sea black sea cucumbers, Protamex compound protease with the weight being 0.1 to 0.5 percent of the weight of the East China Sea black sea cucumbers, and Flavourzyme with the weight being 0.1 to 0.5 percent of the weight of the East China Sea black sea cucumbers into the materials; starting the enzymolysis tank stirring machine, and performing heat-insulating hydrolysis for four hours at 45 to 47 DEG C; filtering and concentrating the materials after enzyme hydrolysis is ended, wherein the temperature of the materials is controlled to be 55 to 58 DEG C, and concentrating is not ended until the solid content is 25 to 30 percent; performing spray-drying by using a centrifugal spray-drying machine, thus obtaining a finished product, namely the sea cucumber essence pure powder, wherein the temperature at the inlet of the spray-drying machine is controlled to be 210 to 215 DEG C, and the temperature at the outlet of the spray-drying machine is controlled to be 95 to 96 DEG C.