34 results about "Marine biology" patented technology

Shark protein antigypertensive peptide, preparation and application thereof, which pertains to marine biology technical field. The novel antigypertensive peptide with two amino acid separated and purified from proteolysis product of shark, has a high inhibiting activity for angiotensin converting enzyme (ACE). Preparation includes steps of carrying out enzymolysis for shark protein to prepare enzymatic hydrolysate, seperating and purifying peptide from the enzymatic hydrolysate, and sequencing of peptide. The invention is applicable for preparing antihypertensive medicament. The invention apply microbial enzyme technology to deep development of shark, obtain peptide having novel sequence, with high inhibiting activity for ACE.

The invention belongs to the technical field of marine biology, and provides a cyanea capillata polypeptide growth factor named as Cc-GRN-1. The amino sequence of the growth factor is represented by the SEQ ID No. 1. The invention also provides a preparation method and applications of the cyanea capillata polypeptide growth factor. The cyanea capillata polypeptide growth factor has a prominent promoting effect on cell proliferation, and has a good application prospect in development of damage repairing drugs.

The invention relates to a biomimetic manta ray device. The biomimetic manta ray device comprises a manta ray body, a pectoral fin body, a multiplex steering engine control plate and a main control single chip microcomputer. The manta ray body is fixedly provided with an acoustic wave sensor, a magnetic field sensor, an acceleration sensor, a temperature sensor, a pressure sensor and a multi-channel wireless communication transceiver device. The front end of the manta ray body is provided with a high definition micro camera. The signal output ends of an infrared obstacle avoidance instrument, a water pressure sensor, the temperature sensor, the acoustic wave sensor, the acceleration sensor and the magnetic field sensor are correspondingly and electrically connected with each signal input end of the main control single chip microcomputer. The biomimetic manta ray device has the advantages that fully compliant biomimetic motion can be achieved, resistance is low, speed is quick and flexible, accelerate starting can be achieved, timely feedback of data of underwater communication is facilitated, noise is reduced to a great extent during the biomimetic manta ray device swimming through dynamic mechanism of gliding, concealment is achieved advantageously, and the good application prospect in marine biology research and sea bottom survey is achieved.

The invention discloses a process for improving a nutritional value of puffer fish skin, and belongs to the technical field of marine biology. The process includes the following steps that the pufferfish skin is taken as raw materials, a modern biological separation technology, a biological enzymolysis technology and a mixed bacteria microbial fermentation technology are integrated to prepare anddevelop puffer fish skin polypeptide biological products with high in-vitro antioxidant capacities, mixed bacteria aerobic fermentation strains mainly include candida utilis, bacillus subtilis, and bacillus coagulans. According to the process, obtained puffer fish skin polypeptides have the strong antioxidant capacity, an extracting solution is subjected to concentration, absorption and drying, alcohol-precipitation or resin purification and other treatments according to application ways, so as to meet efficient utilization in health care, food, medicine and other fields; and the process technology is simple and efficient, obtained products have the strong antioxidant capacity and the free radical scavenging capacity, product stability is strong, the production cost is low, and industrialproduction and large-scale promotion are easily conducted.

The invention discloses a Chinese white dolphin dorsal fin identification method based on a convolutional neural network, and the method comprises the steps: constructing a Chinese white dolphin dorsal fin image library with a position box and an identification tag, and dividing the Chinese white dolphin dorsal fin image library into a training sample and a test sample; training a convolutional neural network for positioning a dorsal fin region; respectively training three convolutional neural networks for identifying the left and right sides of the dorsal fin, the image quality of the dorsalfin and an individual to which the dorsal fin belongs; positioning a dorsal fin region of the image in the test sample through a convolutional neural network for positioning; and identifying the dorsal fin area through the three convolutional neural networks for identification, and outputting identification results of the left and right sides of the dorsal fin, the dorsal fin image quality and theindividual to which the dorsal fin belongs. According to the method, the feature learning capability of the convolutional neural network is fully utilized, automatic identification of the dorsal finof the Chinese white dolphin can be efficiently and accurately realized, and marine biologists are helped to analyze the individual habits and population characteristics of the Chinese white dolphin.

The present invention discloses a spleen-benefiting and stomach-strengthening euphausia superba oil polypeptide biological product and a preparation technology thereof, and belongs to the technical field of marine biology. Euphausia superba oil processing waste is used as a raw material, a modern biological separation technology, a biological enzymolysis technology and a mixed micro-organism fermentation technology are integrated, and the euphausia superba oil polypeptide biological product with significant spleen-benefiting and stomach-strengthening effects is developed, wherein mixed micro-organism aerobic fermentation strains mainly include aspergillus niger, bacillus subtilis and bacillus cereus. The obtained euphausia superba oil polypeptide has relatively strong spleen-benefiting andstomach-strengthening health-care effects. An extract can be subjected to concentration, adsorption and drying, alcohol-precipitation, or purification by resin, etc. according to application routes so as to meet efficient use in the fields of health care, food, medicines, etc. The technology is simple and efficient, and the obtained product has strong anti-oxidation capacity and spleen-benefitingand stomach-strengthening health-care effects, and is strong in product stability, low in production cost and easy for industrial scale production.

The invention relates to a multi-source information fusion algorithm for marine biology detection and early warning in a nuclear power plant. For the data collected by many sensors in the field, the algorithm adopts decision-making fusion form, analyzes and calculates the data respectively based on linear regression model and fuzzy neural network prediction method, and obtains the early warning model of multi-source information fusion for marine biology exploration and early warning. The intrusion intensity formula, fitting error and Euclidean distance are obtained by using the least square multiparameter estimation method of a linear multiple regression model estimation method and the linear regression function of MATLAB. The fuzzy theory and neural network technology are used to fit thesensor sampling data, and a non-parametric multi-sensor data fusion algorithm is implemented to determine the invasion degree of marine organisms and the possibility of water intake blockage, which provides support for improving the reliability of nuclear power plant cold source.

The invention provides a method for detecting a whistle signal of a cetacean animal based on Mel subband spectral entropy. From the perspective of spectral entropy, combining with a Mel filter, dolphin whistle signals are detected by calculating the Mel subband spectral entropy, and the false alarm probability is further reduced by the duration threshold to improve the detection accuracy. The method is simple and easy, and can realize automatic detection and extraction of whistle signals, thereby reducing the workload of artificial extraction. The dolphin whistle signals have important value for research on bionic camouflage underwater acoustic communication, dolphin population classification and recognition and the like, and therefore, the method can assist in bionic camouflage underwateracoustic communication, marine biology and other related research.

The invention belongs to the field of marine biology application, particularly relates to the field of shellfish molecular genetic breeding, and relates to an electrotransfection bivalve shellfish gene editing method, the concentration of recombinant plasmids is kept to be greater than or equal to 2 mu g/mu l, sgRNA and Cas9 protein are mixed into RNP (sgRNA and Cas9 protein complex) according to the volume ratio of 2: 1, the working concentration of the sgRNA is greater than or equal to 50 ng/mu l, the working concentration of the Cas9 is greater than or equal to 250 ng/mu l, the working concentration of the sgRNA is greater than or equal to 50 ng/mu l, and the working concentration of the Cas9 is greater than or equal to 250 ng/mu l; an electrotransfection method is applied to bivalve mollusk gene editing, the electric pulse condition is that the pulse interval is 1s, the number of pulses is 2, the electrode distance is 4mm, pulse voltage and pulse time are changed, the pulse voltage range is 50V-500V, and the pulse time is 100 microseconds-1ms. The method disclosed by the invention can provide a basis for bivalve gene function verification and gene breeding application, and has the advantages of simplicity in operation, low cost, easiness in popularization and the like.

The invention provides an electrochemical reactor for preparing oligosaccharide from marine biology functional sugars and a preparation method and belongs to the electrolysis field. The technical problem that the oligosaccharide cannot be prepared from the marine biology functional sugars through an electrochemical reaction in the prior art is solved. The electrochemical reactor comprises a reaction tank which comprises an empty chamber; two separating plates are fixed in the reaction tank; the empty chamber is divided into three chambers through the two separating plates; the three chambers comprise a reaction chamber and two flow chambers which are located on the bilateral sides of the reaction chamber respectively; each separating plate is provided with a circulation hole which is communicated with the reaction chamber and the corresponding flow chamber; a polar plate is arranged in the reaction chamber. According to the electrochemical reactor, the integration is easy to control and optimize. The preparation method for preparing the oligosaccharide from the marine biology functional sugars comprises step A, feeding; step B, reaction; step C, discharging; step D, separation and collection. According to the preparation method, the oligosaccharide can be extracted from the marine biology functional sugars.

The invention relates to a composition for inhibiting skin degradation of stichopus japonicus and application, and belongs to the technical field of marine biology. The composition is prepared from, by final concentration, 30 [mu] M of Emrican, 20 [mu] M of Ilomastat and 15 [mu] g/ml of Nafamostat Mesylate, the volume ratio of DMSO is 1%, and a solvent is ultrafiltration seawater. Fresh and live sea cucumbers are soaked in a solution composed of the composition at 4 DEG C for 45 min. The soaked fresh and live sea cucumbers can be placed on ice to be preserved for 96 hours without autolysis after being irradiated by a UVA lamp with the radiation intensity being 15 W/m<2> and the wavelength being 365 nm for 40 minutes.

The invention discloses a marine biology anatomy experiment table, which comprises a workbench, an anatomy groove is formed in the upper end face of the workbench, and a fixing assembly is arranged in the anatomy groove; the fixing assembly comprises a rotating screw rod, a rotating motor, a fixing clamp, a first sliding block and a second sliding block; the length direction of the rotating screw rod is consistent with the length direction of the anatomy groove, one end of the rotating screw rod is rotatably connected with the side face of one end of the anatomy groove, the other end of the rotating screw rod is in transmission connection with a rotating motor arranged on the side face of the workbench, one end of the rotating screw rod is provided with a first external thread, the other end of the rotating screw rod is provided with a second external thread, and the first external thread and the second external thread are opposite in screwing direction; the first sliding block is connected to the outer side of the rotating screw rod in a sleeving mode and is in threaded connection with the first external thread, and the second sliding block is connected to the outer side of the rotating screw rod in a sleeving mode and is in threaded connection with the second external thread; and the top ends of the first sliding block and the second sliding block are fixedly connected with fixing clamps.