Abstract: The present invention discloses a kelp harvester. The kelp harvester includes a ship body and a U-shaped tripping piece, where two working chain racks are symmetrically arranged on both sides of the ship body; each working chain rack is provided with a chain and a chain driving device used to drive the chain to operate; multiple rope clamping devices are fixedly arranged on each chain; the rope clamping devices can clamp main ropes, so that when the chains operate, the rope clamping devices can drive the ship body to move along with the operation of the chains; the U-shaped tripping piece is rotatablely connected to the ship body through a hinge; and the ship body is further fixedly provided with a limiting baffle, and the limiting baffle limits the U-shaped tripping piece to stopping rotation when the U-shaped tripping piece is in a vertical state.

Abstract: An acoustic monitoring system and method for the health status of an offshore wind turbine and an ocean wave are provided. The acoustic monitoring system includes a first laser transmitter, a second laser transmitter, a telephoto camera provided at a hub, a vibration detection sensor provided on a tower of a wind turbine, and four acoustic detection sensors arranged at an interval of 90° along the circumference of the tower. The first and second laser transmitters are arranged at the bottom of a nacelle of the wind turbine and emit laser lights vertically downward. The first laser transmitter, the second laser transmitter, the telephoto camera, the vibration detection sensor, and the acoustic detection sensors are connected to a data acquisition and conversion module through a transmission module. The acoustic monitoring system combines laser light detection with acoustic signal feature detection to improve stability and safety of the offshore wind turbine.

Abstract: The present disclosure belongs to the field of petroleum engineering, and specifically relates to a subsea Christmas tree re-prediction method integrating Kalman filter and Bayesian network. The subsea Christmas tree re-prediction method integrating Kalman filter and Bayesian network includes three steps: digital twin model establishment, degradation process re-prediction model establishment, and remaining useful life calculation model establishment.

Abstract: An unloading type sinking rescue device of a subsea mining vehicle and a use method thereof are provided. The unloading type sinking rescue device includes an assembly support, an unloading system, an ejection system and a control system. The assembly support is box-shaped, fixed to a subsea mining vehicle, and provided with a plurality of enclosed cavities. The unloading system includes a counterweight, a counterweight cable, a counterweight fixing bracket and a counterweight recovery cavity. The ejection system includes an anchor, an ejection cavity, an anchor cable, an anchor recovery shaft, a pulley, a spring and a boosting device. The control system controls the operation of the unloading system and the ejection system. The use method includes: (1) unloading; (2) ejection; (3) recovery of a part of counterweights; (4) recovery of the anchor; and (5) recovery of remaining counterweights.

Abstract: A grouting and pile forming device includes a compartment box and a double-spiral-tube structure. The double-spiral-tube structure includes an outer spiral tube and an inner spiral tube, which are nested and fixed together. A top part of the outer spiral tube and a top part of the inner spiral tube are hermetically connected. An inner space of the inner spiral tube forms a grouting cavity. A space between the outer spiral tube and the inner spiral tube forms a drainage and delivery cavity. A plurality of drainage and delivery holes are provided in a tube body of the outer spiral tube. A construction method for strengthening soft soil through the grouting and pile forming device includes the following steps: 1) operation preparation; 2) downward spiral penetration; 3) drainage consolidation; 4) chemical consolidation; 5) upward spiral lifting; and 6) repeated operation until all soil to be strengthened is treated.

Abstract: A long-term in-situ observation device for the deep sea bottom supported engineering geological environment is provided, including: a sediment acoustic probe, a sediment pore water pressure probe, a three-dimensional resistivity probe, a water observation instrument, a long-term observation power supply system, a probe hydraulic penetration system, a general control and data storage transmission system, an acoustic releaser, an underwater acoustic communication apparatus, and an instrument platform. The observations include the engineering properties, physical properties, mechanical properties, and biochemical properties of a seawater-seabed interface-sediment. The engineering properties and the physical and mechanical indexes of seafloor sediments are comprehensively determined by three-dimensional measurement of seafloor resistivity and acoustic wave measurements. The physical and biochemical properties of seawater are expected to be acquired by sensors.

Abstract: Preparation method and application of astaxanthin H1-, or H2- or J-aggregate water dispersion system are provided. The three kind of color-different astaxanthin multimer nano-dispersion systems utilize a special molecular structure of natural biomacromolecule chitosan and fish sperm DNA as well as physical interaction between macromolecules to induce formation and stability of astaxanthin multimers under solvent and salt ion-effects. Low-toxicity ethanol is selected as a good solvent for astaxanthin. The organic solvent can be completely removed in the later stage of the preparation process, and can be further enriched and recycled, which is beneficial to clean production and low cost. By adjusting process parameters, the H1-, or H2- or J-type astaxanthin aggregate water dispersion system can be obtained, so as to control a coloration range of astaxanthin water-based products to be yellow, orange and pink.

Abstract: Provided is a method for preparing water-soluble astaxanthin complex. The method includes mixing a raw material containing astaxanthin with a solution containing an organic acid and performing cell disruption and leaching and can enable natural astaxanthin to interact with components such as proteins, nucleic acids, or polysaccharides that naturally exist in the raw material, so as to directly prepare water-soluble astaxanthin complex without modifying astaxanthin. The method requires a natural source of astaxanthin, has low equipment requirements and production costs, is simple to operate, green and safe with no organic solvent residues, and easy to industrialize. The representative figure is FIG. 1.

Abstract: The present invention discloses a second-generation in-situ test device for strength of a shallow water sediment, including a workboat and a static cone penetration test unit carried by the workboat, where the static cone penetration unit includes a mounting frame, a penetration unit, a control cabin and a hydraulic unit; the penetration unit and the hydraulic unit are both electrically connected to the control cabin. In this solution, the workboat is used to carry the test equipment, and the static cone penetration test unit is carried on the workboat with a special structure. Based on a double-cable lifting frame, the equipment is launched and recovered through a moon pool in the center of a hull. This significantly improves the efficiency and safety of the sediment strength test operation in a shallow water environment.

Abstract: A grouting and pile forming device includes a compartment box and a double-spiral-tube structure. The double-spiral-tube structure includes an outer spiral tube and an inner spiral tube, which are nested and fixed together. A top part of the outer spiral tube and a top part of the inner spiral tube are hermetically connected. An inner space of the inner spiral tube forms a grouting cavity. A space between the outer spiral tube and the inner spiral tube forms a drainage and delivery cavity. A plurality of drainage and delivery holes are provided in a tube body of the outer spiral tube. A construction method for strengthening soft soil through the grouting and pile forming device includes the following steps: 1) operation preparation; 2) downward spiral penetration; 3) drainage consolidation; 4) chemical consolidation; 5) upward spiral lifting; and 6) repeated operation until all soil to be strengthened is treated.

Abstract: An unloading type sinking rescue device of a subsea mining vehicle and a use method thereof are provided. The unloading type sinking rescue device includes an assembly support, an unloading system, an ejection system and a control system. The assembly support is box-shaped, fixed to a subsea mining vehicle, and provided with a plurality of enclosed cavities. The unloading system includes a counterweight, a counterweight cable, a counterweight fixing bracket and a counterweight recovery cavity. The ejection system includes an anchor, an ejection cavity, an anchor cable, an anchor recovery shaft, a pulley, a spring and a boosting device. The control system controls the operation of the unloading system and the ejection system. The use method includes: (1) unloading; (2) ejection; (3) recovery of a part of counterweights; (4) recovery of the anchor; and (5) recovery of remaining counterweights.

Abstract: A method for an analysis of drug molecular dynamics results based on root-mean-square deviation multiple features is disclosed. The method includes the following steps: (i) analyzing and extracting features of a molecular dynamics RMSD image; (ii) performing a calculation of a binding free energy and an energy decomposition by using a molecular mechanics/Poisson-Boltzmann surface area method; and (iii) SVM classification training. By using RMSD image and molecular mechanics/Poisson-Boltzmann surface area method, the drug molecular dynamics are more efficient and accurate.

Abstract: The present invention discloses a system for measuring the mechanical properties of sea floor sediments at full ocean depth.

Abstract: The disclosure discloses a method and application for rapid and accurate chromosomal location of economic traits in laver, belonging to the fields of genomics and molecular breeding, wherein comprising the following steps: distinguishing the different genotype sectors by the color difference of pigment mutants, releasing monospores based on the asexual reproduction of single-genotype sectors, forming offspring CMD population; performing QTL-seq analysis on the extreme phenotype pools of offspring CMD population by SNP/InDel markers; and combining KASP and RNA-seq to predict the location of the genes of discrete traits or major QTL. The disclosure may solve the problem of difficulty in genetic analysis of various traits caused by the genotypic chimeric haploid characteristics.

Abstract: Disclosed is a lymph targeting nuclear magnetic contrast agent using a brown algae polysaccharide as a carrier, and a preparation method and a use thereof. A macromolecular contrast agent with good water solubility was prepared by using the brown algae polysaccharide as the carrier, using mannose or mannose derivatives as a mannose receptor (MBP) recognition group, and using a paramagnetic metal ion chelate as a nuclear magnetic resonance imaging group. The binding capacity of lymphoid tissue was improved. The mannose or mannose derivative group introduced into the synthesized contrast agent molecule achieves the goal of binding to the enriched mannose receptors in the lymphoid tissues. At the same time, after the contrast agent is injected subcutaneously, both lymph vessels and lymph nodes were clearly visualized under MRI scanning.

Abstract: Provided are penicinotam derivatives, a tautomer, a stereoisomer, a racemate, a nonequal mixture of enantiomers, a geometric isomer, a solvate, a pharmaceutically acceptable salt or a prodrug thereof, and a pharmaceutical composition comprising the derivatives. Also provided herein is use of the derivatives and the pharmaceutical compositions in treating diseases caused by inflammation, immune system disorders.

Abstract: Provided is a lactam compound, a tautomer, a stereoisomer, a racemate, a nonequal mixture of enantiomers, a geometric isomer, a solvate, a pharmaceutically acceptable salt thereof, or a solvate of the salt of the compound, and a pharmaceutical composition containing the compound. Also provided are the use of such compounds and their pharmaceutical compositions as drugs, especially as antiviral drugs.

Abstract: The disclosure provides a novel alginate lyase, whose amino acid sequence is SEQ ID NO: 1. The disclosure further provides a nucleic acid encoding the alginate lyase, which can have the sequence of SEQ ID NO: 2, and may be comprised in a recombinant expression vector. Such an expression vector may be comprised in a host microorganism to express the alginate lyase. Also disclosed are methods of producing the alginate lyase by expression in a host microorganism. The alginate lyase enzyme provided by the disclosure can be used for catalyzing the degradation of sodium alginate to produce unsaturated 2-8 saccharides, among which unsaturated disaccharides and unsaturated trisaccharides can be the main component.

Abstract: The present invention discloses a system for measuring the mechanical properties of sea floor sediments at full ocean depth.

Abstract: The present invention discloses a kelp harvester. The kelp harvester includes a ship body and a U-shaped tripping piece, where two working chain racks are symmetrically arranged on both sides of the ship body; each working chain rack is provided with a chain and a chain driving device used to drive the chain to operate; multiple rope clamping devices are fixedly arranged on each chain; the rope clamping devices can clamp main ropes, so that when the chains operate, the rope clamping devices can drive the ship body to move along with the operation of the chains; the U-shaped tripping piece is rotatablely connected to the ship body through a hinge; and the ship body is further fixedly provided with a limiting baffle, and the limiting baffle limits the U-shaped tripping piece to stopping rotation when the U-shaped tripping piece is in a vertical state.