摘要:
An inundation prevention system for ship is provided. The inundation prevention system for ship includes a fire-extinction gas ejection part configured to eject a fire extinction gas to an installation area prepared in a hull, an airbag part of 3D shape disposed in the installation area, and an airbag actuation part configured to supply the fire extinction gas to the airbag part, if inundation occurs in the installation are, and to inflate the airbag in the installation for compulsory buoyancy.
摘要:
Disclosed herein is an experimental system for measuring wave force. The experimental system includes a wave force measurement apparatus (100), a load calculation unit (200) and a display unit (300). The wave force measurement apparatus includes: a wave generation tank (110) that contains water therein and forms a water channel; a wave generator (120) generating a wave in the water contained in the wave generation tank; and a wall (150) disposed in the wave generation tank and provided with wave manometers (190) and load transducers (140). The load calculation unit (200) adds up pressures of the wave measured by the wave manometers and loads of the wave measured by the load transducers and calculates a load of the wave applied to a surface of the wall. The display unit (300) indicates a result value calculated by the load calculation unit to an experimenter.
摘要:
Disclosed is a buffer system for mining a deep seafloor mineral resource. The buffer system includes a hopper part that introduces and stores a crushed mineral resource to discharge the crushed mineral resource upward, a first pipe that communicates with an upper portion of the hopper part to introduce the mineral resource, a feeder part provided under the hopper part to discharge the mineral resources upward, a second pipe that communicates with the feeder part and lifts the mineral resource, a hydraulic part provided under the hopper part to convert power received from a surface boat into hydraulic power to operate at least one actuator and a driving motor to introduce the mineral resource into the first pipe, and a structure frame coupled to a lifting pipe to transmit an external load applied to the buffer system, and constituting an external frame of the buffer system to protect internal units.
摘要:
The present invention provides a controller for a pendulum type wave-power generating apparatus. Electric power produced by wave-power generation has been pointed out as being of low efficiency and more expensive than wind-power generation. To overcome the above problems, the present invention uses resonance and impedance matching of the sea waves, thus making it possible to markedly enhance the efficiency of wave-power generation. The present invention does not use a wave-height meter which is generally expensive and controls the generating apparatus in response to variation of the conditions of the sea, thus automatically maintaining the resonance and impedance matching operation, thereby making high-efficiency operation possible. As a result, the cost of the wave-power generation can be reduced, so that the wave-power generation can be widely commercialized.
摘要:
Provided is a polypeptide having FGF2 activity and improved temperature stability and protease resistance. The polypeptide includes at least one substitution selected from a substitution of aspartic acid (D) with glutamic acid (E) at position 28, a substitution of cysteine (C) with isoleucine (I) or leucine (L) at position 78, or a substitution of cysteine (C) with isoleucine (I) or tryptophan (W) at position 96 in SEQ ID NO: 1.
摘要:
Proposed is a multifunctional system for recovering high viscosity oil flowing onto and adhered to a shore. An oil collection assembly configured to collect oil is detachably coupled to the front of an amphibious vehicle (11). A recovered oil treatment assembly (800) is mounted on a top portion of the amphibious vehicle (11) and configured to selectively receive the oil collected from the oil collection assembly and separate water from the received oil. A transfer assembly (700) configured to transfer the oil collected from the oil collection assembly to the recovered oil treatment assembly (800) is connected to the oil collection assembly. A transfer pump assembly (750) is connected to the transfer assembly (700) and configured to transfer the oil to the recovered oil treatment assembly (800) or to the outside.
摘要:
The present disclosure relates to a natural gas hydrate tank container loading system for transporting natural gas hydrate, and the present disclosure provides a natural gas hydrate tank container loading system, enabling self-powered power generation and boil-off (BOG) gas treatment, includes: a refrigerator for inhibiting the generation of boil-off gas which naturally generates in a natural gas hydrate tank container during transportation; and a solar cell, a battery, and a generator, which operates by means of the boil-off gas, for supplying electric power to the refrigerator, thereby ensuring a generation capacity sufficient to operate the refrigerator by means of the solar cell, the generator, and the battery, and thus always maintaining a stable phase equilibrium (self-preservation) in the natural gas hydrate tank container even during long-distance transportation and solving problems of fire, environmental pollution, or the like which occur when the boil-off gas (BOG) is discharged to the outside.