5 results about "China sea" patented technology

The invention belongs to the technical field of offshore wind power disaster prediction, and particularly provides an offshore wind power extreme weather disaster risk dynamic grading method, system and equipment based on typhoon path-intensity coupling, and the method comprises the steps: obtaining the latitude and longitude coordinates of a target point; based on historical typhoon data, calculating a typhoon disaster exposure index TDEI of the target point; sea area subareas to which the target point belongs are determined, wherein the sea area subareas comprise the South China Sea, the East China Sea and the Yellow China Sea; acquiring a reference wind speed of the sea area subarea; obtaining a correction coefficient K based on the TDEI and the sea area partition; and calculating an anti-typhoon design reference wind speed of the target point, and completing extreme weather disaster risk dynamic grading. According to the method, the quantitative index is constructed, the sea area is divided, the grading correction rule is established, and dynamic grading of risks and accurate design of wind speed output are achieved.

The application provides a bacillus australimaris strain M04, a bacterial fertilizer, a fermentation agent and application thereof, and belongs to the technical field of microorganisms.The application provides a bacillus australimaris strain M04 with a preservation number of CGMCC No.30262.It is proved by experiments that the bacillus australimaris strain M04 has the ability of calcium dissolution, can improve the content of effective calcium in soil, improve the soil environment, can also produce auxin to promote plant growth; in addition, the bacillus australimaris strain M04 has good cellulase activity and the characteristics of salt and alkali tolerance, can effectively promote the rotting of organic fertilizer such as straw in a high-salt environment, has a positive effect on accelerating the conversion and utilization of straw returned to the field, and has a wide application prospect in the preparation of salt and alkali tolerant multifunctional biological organic fertilizer.

The invention discloses acid-resistant alpha-L-fucosidase IDSFuc29-2 and application thereof, and belongs to the field of protease, the amino acid sequence of the alpha-L-fucosidase IDSFuc29-2 is as shown in SEQ ID No.2, the alpha-L-fucosidase IDSFuc29-2 is derived from a metagenome of bottom mud of the East China Sea, and recombinase with definite catalytic activity can be obtained through a prokaryotic expression system. The enzyme shows good reaction characteristics under the acidic condition, the optimum reaction pH of the enzyme is about 4.0, high relative enzyme activity can still be kept within the pH range of 4.0-6.0, and meanwhile, the enzyme has acceptable stability under the condition of 20-40 DEG C. The application conditions of the GH29 family enzyme in degradation and related application of fucoidin are expanded, and the GH29 family enzyme has important research significance and application value.

A Transsunet-based satellite image internal wave identification and segmentation method comprises the following steps: acquiring multi-source ocean internal solitary wave satellite image data, forming a multi-source satellite image data set, processing to obtain an image data set with a label, and performing image data enhancement processing to obtain a training data set; dividing the training data set into a training set, a verification set and a test set according to a predetermined proportion; the training set and the verification set are adopted to train the TransUNet network model, and the trained TransUNet network model is obtained; and the trained TransUNet network model is used to identify and segment the data in the unprocessed image data set to obtain segmented ocean internal wave stripe data, and image splicing is carried out to obtain an East China Sea internal wave identification result. Through structural innovation and algorithm optimization, balance between local detail capture and global semantic modeling is realized in a remote sensing image segmentation task, and the segmentation precision and generalization performance of the model are effectively improved.

This invention relates to the field of ocean current velocity inversion technology, specifically to a method for calculating trans-shelf water flux at a shelf break in the East China Sea. The method includes: obtaining long-term series observation data; establishing a regional coordinate system: establishing a moving coordinate system that changes with the continental slope topography, a coordinate system (n) across the 200-meter isobath, a coordinate system (l) along the 200-meter isobath, and a coordinate system (z) perpendicular to the sea surface; and constructing a dynamic equation: constructing the trans-shelf water flux q, which is the trans-shelf water flux in the horizontal direction, by vertical integration along the 200-meter isobath. This method is primarily based on satellite altimeter data and historical field observation data, using a reasonable dynamic model to calculate the trans-shelf water flux. It avoids the need for extensive field ocean current observation equipment and numerical calculation methods that require significant computational resources, offering advantages such as better economy, increased safety, reliable measurement accuracy, and greater convenience.