Abstract:
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.
Abstract:
Disclosed is a method of decreasing pressure fluctuation induced on a surface of a hull due to propeller cavitation by using real-time vibration information and adjusting rotation angles of two propellers of a twin-propeller ship.
Abstract:
Disclosed is a sample collection apparatus. The sample collection apparatus relates to a sample collection apparatus configured to be capable of stably collecting sediment from a seabed without disturbing the same and to be capable of easily separating and transporting a box itself containing a sample from the sample collection apparatus. Briefly, the sample collection apparatus includes a frame section, a vertical operation section, and a rotary operation section.
Abstract:
The present invention provides a marine structure platform including: horizontal connecting parts which are disposed under the seawater and connected to one another in a lattice structure; vertical connecting parts which are installed uprightly at four corners of the horizontal connecting parts and protrude from the seawater; and movement damping parts which are extended at the four corners from the vertical connecting parts along the horizontal connecting parts adjacent to one another, the movement damping parts having a plate shape so as to define a vertical gap therebetween.
Abstract:
A floating marine structure which includes a first float disposed at the center and a plurality of second floats disposed around the first float, where the first float has a floating body made of a floatable material in a polygonal prism shape, a damping unit coupled to the bottom of the floating body at the center, having the same cross-section as the floating body, having a cross-sectional area larger than the cross-sectional area of the floating body, and reducing a shake of the first float in the sea, and at least one coupling hole formed at each side of the floating body. The second float has the same shape as the floating body and has coupling protrusions formed at sides facing the sides of the floating body and inserted in the coupling holes, and wherein the coupling holes are formed at alternate sides of the floating body.
Abstract:
The present invention provides Thermococcus onnurineus MC02 strain (accession no. KCTC12511BP) having increased hydrogen production ability, wherein the expression of rchA gene of the strain increases. Also, the present invention provides a method for producing the strain belonged to the genus Thermococcus having increased hydrogen production ability comprising, increasing the expression of rchA gene of the strain, and hydrogen production method using the strain.
Abstract:
Provided is an apparatus for equalizing a channel and determining reception data of a packet communication receiver. The apparatus includes: an input interface unit which receives a reception sample string of a packet having a midamble and location information of the midamble; a sample dividing unit which divides the reception sample string into a first sub sample string and a second sub string stream using the location information of the midamble; and a channel equalizing unit which performs channel equalization on the first sub sample string and the second sub sample string, respectively, using a channel equalizing algorithm of the channel equalizer.
Abstract:
This invention relates to amphiphilic hydrogel particles for antifouling paint, which are environmentally friendly and in which anti-corrosion and antifouling effects can be maximized through a single coating process. The amphiphilic hydrogel particles are fabricated by encapsulating conducting polymer particles having anti-corrosion functionality with functional nanoparticles having antifouling functionality and then immobilizing the functional nanoparticles on a hydrogel matrix, whereby the conducting polymer particles contained in the functional nanoparticles are slowly and continuously released or the release rate thereof can be controlled so as to release the corresponding particles in a specific environment, ultimately maintaining long-term functionality. The conducting polymer particles contained in the amphiphilic functional nanoparticles can exhibit anti-corrosion functionality, thus maximizing anti-corrosion and antifouling effects through a single coating process.
Abstract:
A multi-suction pile anchor and a plate anchor for mooring a marine structure, comprises a plurality of suction piles connected in parallel with the same capacity penetrates into the sea floor, wherein a pullout resistance required for mooring the marine structure is applied by changing the number of suction piles, and wherein a plurality of suction piles is connected each other with a connecting plate to increase a lateral resistance.
Abstract:
A robot for mining a manganese nodule on a deep sea floor. The apparatus includes a plurality of moving apparatuses detachably disposed in parallel with each other; a mining apparatus installed to a front end of the moving apparatuses to mine a manganese nodule; a transferring apparatus installed to an upper portion of the moving apparatuses to crush the manganese nodule in a constant size or less such that the manganese nodule is transferred to an external; a power control measuring unit installed to an upper portion of the moving apparatuses for providing power to the moving apparatuses and controlling operations of the mining apparatus and the transferring apparatus; a structure frame for connecting the moving apparatuses to each other and for supporting the mining apparatus, the transferring apparatus and the power control measuring unit; and a buoyancy unit installed to a top end of the structure frame.