Abstract

Probiotics encapsulated with calcium carbonate, includes: calcium carbonate; and probiotics. The probiotics encapsulated with calcium carbonate have a particle size of 0.9 to 9.2 μm. The probiotics encapsulated with calcium carbonate have a calcium carbonate content of 17% to 98%. The probiotics encapsulated with calcium carbonate have an intestine-reaching cell count of 8 to 11 Log CFU/g. The calcium carbonate reacts with bile and is converted into hydroxyapatite.

IPC Classes  ?

• A61K 9/50 - Microcapsules
• A61K 9/16 - AgglomeratesGranulatesMicrobeadlets
• A61K 9/19 - Particulate form, e.g. powders lyophilised
• A61K 35/745 - Bifidobacteria
• A61K 35/747 - Lactobacilli, e.g. L. acidophilus or L. brevis

Abstract

The present invention relates to a battery fire extinguishing device which prevents, delays, or extinguishes a battery fire by applying an electric field to a battery when there is a sign of a battery fire. The present invention comprises a battery, and electrode plates formed on both poles of the battery and applying an electric field to the battery when there is a sign of a fire in the battery, and thereby, the present invention prevents, delays, or extinguishes a battery fire by applying an electric field to the battery when there is a sign of a battery fire.

IPC Classes  ?

• H01M 10/657 - Means for temperature control structurally associated with the cells by electric or electromagnetic means
• H01M 10/613 - Cooling or keeping cold
• H01M 10/63 - Control systems
• H01M 10/643 - Cylindrical cells
• H01M 50/691 - Arrangements or processes for draining liquids from casingsCleaning battery or cell casings

Abstract

The present invention relates to a flame-retardant sheet composition for a lithium secondary battery, characterized by delaying the spread of fire, and a flame-retardant sheet using same and, more specifically, to a sheet composition for delaying the spread of fire by controlling the temperature during thermal runaway, wherein the sheet composition includes: 20-40 parts by weight of at least one thermoplastic binder selected from polyvinyl acetate, polyvinyl alcohol, polyethylene, polyvinyl acetate-versatate, polyethylene-vinyl acetate, polyurethane, polystyrene, polyacrylate, polymethacrylate resin, polyacrylamide, and polyethylene terephthalate; 1-10 parts by weight of an organic binder; 1-5 parts by weight of a crosslinking agent; 30-50 parts by weight of an inorganic flame retardant; 10-20 parts by weight of a glass network former; 1-5 parts by weight of a plasticizer; 1-5 parts by weight of an additive; and 50-150 parts by weight of a solvent.

IPC Classes  ?

• H01M 10/658 - Means for temperature control structurally associated with the cells by thermal insulation or shielding
• H01M 50/202 - Casings or frames around the primary casing of a single cell or a single battery
• C08L 101/00 - Compositions of unspecified macromolecular compounds
• C08L 31/04 - Homopolymers or copolymers of vinyl acetate
• C08K 3/016 - Flame-proofing or flame-retarding additives
• C08K 7/28 - Glass

Abstract

A method for manufacturing a lightweight part including a porous metal matrix having a functional resin bonded thereto is disclosed. The method includes a porous metal matrix preparation step of preparing a porous metal matrix; a base layer deposition step in which while a nozzle of a FDM (Fused Deposition Modeling) 3D printer moves along a first predetermined movement coordinate path, the nozzle heats and extrudes a resin filament toward a surface of the porous metal matrix to infiltrate a molten resin into closed pores or depressions in the surface of the porous metal matrix, thereby forming a base layer bonded to the surface of the porous metal matrix; and a build layer deposition step in which while the nozzle moves along the first set movement coordinate path or a predetermined second set movement coordinate path different from the first set movement coordinate path, the nozzle heats and extrudes the resin filament toward the base layer such that one or more flat or curved build layers are deposited on the base layer, wherein the resin filament is made of a functional resin material.

IPC Classes  ?

• B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
• B29K 705/00 - Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
• B33Y 10/00 - Processes of additive manufacturing

Abstract

A ballast water tank airflow-based power generator, according to one embodiment of the present invention, comprises: an air duct which has one side, where a tank-side opening is formed, communicatively connected to a ballast water tank of a ship, and has a turbine-side opening formed in a position spaced from the tank-side opening; a turbine module which is equipped with a turbine housing and a Wells turbine, the turbine housing being detachably coupled to the air duct by means of a fastening member, and having formed therein a duct-side opening communicating with the turbine-side opening, and an inlet/outlet opening communicating with the outside, and the Wells turbine being disposed inside the turbine housing and undergoing a rotating operation on the basis of an airflow; and a generator which is connected to the turbine and carries out power generation, wherein a first coupling part and a second coupling part having an inclined female/male structure are formed in the tank-side opening of the air duct and the duct-side opening of the turbine module, thereby enabling convenient coupling and effective prevention of separation caused by vibration.

IPC Classes  ?

• B63J 3/04 - Driving of auxiliaries from power plant other than propulsion power plant
• B63B 73/20 - Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
• B63B 73/40 - Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
• F03D 9/32 - Wind motors specially adapted for installation in particular locations on moving objects, e.g. vehicles
• F03D 80/00 - Details, components or accessories not provided for in groups

Abstract

The present invention relates to a method for mass synthesis of carbon nanotubes and carbon nanotubes synthesized thereby and, more specifically, to a method for mass synthesis of carbon nanotubes and carbon nanotubes synthesized thereby, wherein the method enables not only the synthesis of a catalyst at a high rate through plasma generation without a separate reductant but also the continuous mass synthesis of high-purity carbon nanotubes. The technical essences of the present invention are a method for mass synthesis of carbon nanotubes and carbon nanotubes synthesized thereby, the method comprising: a first step of supplying a CNT growth material containing a carbon precursor; a second step of disposing a pair of metal wires in a solution mixed with a metal salt, and applying electric power to the metal wires to generate plasma; and a third step of thermally treating the CNT growth material and the catalyst.

IPC Classes  ?

• C01B 32/164 - Preparation involving continuous processes

Abstract

The present invention relates to a battery fire extinguishing device which prevents, delays, or extinguishes a battery fire by applying an electric field to a battery when there is a sign of a battery fire. The present invention comprises a battery, and electrode plates formed on both poles of the battery and applying an electric field to the battery when there is a sign of a fire in the battery, and thereby, the present invention prevents, delays, or extinguishes a battery fire by applying an electric field to the battery when there is a sign of a battery fire.

IPC Classes  ?

• H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
• H01M 50/342 - Non-re-sealable arrangements
• H01M 50/691 - Arrangements or processes for draining liquids from casingsCleaning battery or cell casings
• A62C 3/16 - Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
• A62C 99/00 - Subject matter not provided for in other groups of this subclass

Abstract

The present invention relates to probiotics encapsulated with calcium carbonate and a method for preparing same. More specifically, the present invention relates to: probiotics encapsulated with calcium carbonate that improve an intestinal reach rate, probiotic stability during freeze-drying, and storage stability by encapsulating probiotics with calcium carbonate; and a method for preparing same.

IPC Classes  ?

• A23P 10/30 - Encapsulation of particles, e.g. foodstuff additives
• A23L 33/16 - Inorganic salts, minerals or trace elements
• A23L 33/135 - Bacteria or derivatives thereof, e.g. probiotics

Abstract

A method for recovering high-purity magnesium sulfate includes: a pre-precipitation step of mixing an alkali precipitant and seawater; a concentration step of reacting a precipitate formed in the pre-precipitation step with sulfuric acid, followed by filtering to obtain a first eluate; a first precipitation step of adding ethanol to the first eluate, and then removing a first precipitated solid to obtain a second eluate; and a second precipitation step of precipitating magnesium sulfate solid by further adding ethanol to the second eluate from which the first precipitated solid has been removed.

IPC Classes  ?

• C01F 5/40 - Magnesium sulfates

Abstract

Provided is a method for identifying and evaluating a hazard that may occur when artificial intelligence is applied to a marine field system. The method of the present invention comprises: an expected hazard defining step for a marine AI system; a hazard factor selecting step for schematizing a control structure of the marine field system, displaying a list of hazard factor candidates, and generating and storing a list of selected hazard factor candidates upon selection from a user; an unsafe action analyzing step for defining an unsafe action (UA), receiving, from the user, an input of a cause of the unsafe action (UA), and storing same; a hazard level evaluating step for calculating a degree of hazard and a hazard level on the basis of a degree of damage effect and occurrence likelihood for each unsafe action, receiving an input of safety requirements, and storing same; and a report generating step for generating a report on the basis of pieces of data from the above steps.

IPC Classes  ?

• G06Q 10/06 - Resources, workflows, human or project managementEnterprise or organisation planningEnterprise or organisation modelling

Abstract

The present invention relates to an aluminum alloy with reduced residual stress, and provides an aluminum alloy which is an Al-Cu alloy containing a transition metal, and which has, during post-solution-annealing quenching, residual stress lower than that of an Al-Cu alloy containing no transition metals. The alloy of the present invention can inhibit dimensional deformation and damage, which can be caused by residual stress.

IPC Classes  ?

• C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
• C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
• B22D 21/00 - Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedureSelection of compositions therefor

Abstract

The present invention relates to a battery module comprising a three-dimensional pulsating heat pipe. Such battery module comprising a three-dimensional pulsating heat pipe comprises pulsating heat pipes which are each disposed in respective spaces between a plurality of battery cells and which each comprise a plurality of heat pipes connected so as to communicate with each other. Thus a dry-out phenomenon resulting from the evaporation of a working fluid may be prevented.

IPC Classes  ?

• H01M 10/6552 - Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
• H01M 10/647 - Prismatic or flat cells, e.g. pouch cells
• H01M 10/6551 - Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
• H01M 10/617 - Types of temperature control for achieving uniformity or desired distribution of temperature
• H01M 10/615 - Heating or keeping warm
• H01M 10/613 - Cooling or keeping cold
• H01M 10/625 - Vehicles

Abstract

There is provided a method for producing calcium carbonate by utilizing seawater and calcinated shells, and calcium carbonate and a calcium agent produced thereby. The method for producing calcium carbonate includes: eluting calcium by mixing calcinated shells, seawater, and sugar; and generating calcium carbonate by injecting carbon dioxide into the calcium eluate generated in the eluting calcium. The calcium agent includes vaterite-type calcium carbonate.

IPC Classes  ?

• C01F 11/18 - Carbonates
• A23L 33/16 - Inorganic salts, minerals or trace elements

Abstract

There is provided a solar power generator having a variable shape which can secure a maximum solar power generation area by being unfolded horizontally and upward in the case of performing solar power generation and can be transformed to have a minimum volume by being transformed into a box shape in the case of not performing solar power generation. The solar power generator includes a base frame, four solar panel members for forming a box which are respectively coupled to four sides of the base frame, a rotation drive source for rotating each of the four solar panel members, a tube member, a lower surface of which is fixed to a center portion of an upper surface of the base frame, an air injection and discharge part, a top plate for the tube member, and a plurality of solar panel assemblies for tube member sidewalls.

IPC Classes  ?

• H02S 30/10 - Frame structures
• H02S 20/32 - Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
• B60L 8/00 - Electric propulsion with power supply from forces of nature, e.g. sun or wind
• H02S 30/20 - Collapsible or foldable PV modules

Abstract

Provided are a floating bunkering station and method for producing, storing and supplying an environment-friendly fuel. A floating bunkering station for producing, storing and supplying an environment-friendly fuel according to one embodiment may comprise: a floating body floating offshore; LNG/LPG, ammonia, methanol and ethanol storage and supply units installed on the floating body and for storing and supplying LNG or LPG, ammonia, methanol and ethanol received from LNG or LPG, ammonia, methanol and ethanol carriers or an environment-friendly fuel conversion unit; a hydrogen storage and supply unit installed on the floating body and for storing and supplying hydrogen received from at least one from among a hydrogen carrier, the environment-friendly fuel conversion unit, and a hydrogen production unit; and the environment-friendly fuel conversion unit for collecting the generated LNG or LPG and supplying same to the LNG/LPG storage and supply unit, reacting methane or carbon monoxide received from the LNG/LPG storage and supply unit with water to produce hydrogen, and transferring the produced hydrogen to the hydrogen storage and supply unit. In addition, the present invention generates ammonia by means of a chemical combination of hydrogen and nitrogen, and, conversely, may isolate hydrogen from ammonia. In addition, the present invention may collect and store hydrogen by cooling LNG.

IPC Classes  ?

• B63B 35/44 - Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
• B63B 25/16 - Load-accommodating arrangements, e.g. stowing or trimmingVessels characterised thereby for bulk goods fluid closed heat-insulated
• C01B 3/12 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents by reaction of water vapour with carbon monoxide
• C01B 3/34 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
• C01B 3/04 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of inorganic compounds, e.g. ammonia
• C01C 1/00 - AmmoniaCompounds thereof
• C01C 1/04 - Preparation of ammonia by synthesis
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• B63J 1/00 - Arrangements of installations for producing fresh water, e.g. by evaporation and condensation of sea water

Abstract

A load area tracking type ship battery management system is proposed. The ship battery management system includes a calculation unit for generating SFOC curve data periodically by calculating specific fuel oil consumption (SFOC) versus ship load factors, a LF setting unit for specifying a ship load factor point as a light load factor (LF) point in the SFOC curve data, a HF setting unit for specifying a ship load factor point as a heavy load factor (HF) point, a Emax setting unit configured to obtain a highest point (Emax) of generator efficiency, a Rmin setting unit for calculating battery charging efficiency in the LF to obtain a smallest load factor point (Rmin) bearing a generator load by battery charging, and a Rmax setting unit for calculating battery charging efficiency in the HF to obtain a highest load factor point (Rmax) bearing the generator load by battery discharging.

IPC Classes  ?

• B63B 79/40 - Monitoring properties or operating parameters of vessels in operation for controlling the operation of vessels, e.g. monitoring their speed, routing or maintenance schedules
• H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
• H01M 10/44 - Methods for charging or discharging
• H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

A method for manufacturing a lightweight component is disclosed. The method for manufacturing a lightweight component comprises: a first step of planarizing the surface of a porous metal base material by placing a metal plate on the surface of the porous metal base material; a second step of simultaneously irradiating a laser beam on the metal plate and supplying metal powder while linearly moving a nozzle of a directed energy deposition (DED) apparatus in one direction, wherein the linear movement is repeated while the laser beam is irradiated at an output capable of melting the base material, the metal plate, and the metal powder to form multiple rows of molten pools which overlap one another on the surface of the porous metal base material; and a third step in which the multiple rows of molten pools rapidly coagulate in sequences such that metal layers are deposited on the surface of the porous metal base material.

IPC Classes  ?

• B22F 10/25 - Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
• B22F 10/322 - Process control of the atmosphere, e.g. composition or pressure in a building chamber of the gas flow, e.g. rate or direction
• B22F 10/47 - Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
• B22F 7/00 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting
• B22F 7/02 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor

Abstract

Disclosed is a method for recovering high-purity magnesium sulfate, in which ethanol is added twice to seawater to separate calcium and magnesium. The method for recovering high-purity magnesium sulfate comprises: a pre-precipitation step of mixing an alkali precipitant and seawater; a concentration step of reacting a precipitate formed in the pre-precipitation step with sulfuric acid, followed by filtering to obtain a first eluate; a first precipitation step of adding ethanol to the first eluate, and then removing a first precipitated solid to obtain a second eluate; and a second precipitation step of precipitating magnesium sulfate solid by further adding ethanol to the second eluate from which the first precipitated solid has been removed.

IPC Classes  ?

• C01F 5/40 - Magnesium sulfates

Abstract

A surface lamination method using a direct energy deposition (DED) device without making pores between bead rows is disclosed. The surface lamination method using the DED device without making pores between bead rows forms a first bead row laminated by means of a first linear movement of a nozzle of the DED device, and a second bead row laminated so as to be partially overlapped with the first bead row by means of a second linear movement of the nozzle of the DED device for overlapping the first bead row, and increases the laser output of the DED device if the inclination of a surface to be laminated is increased.

IPC Classes  ?

• B22F 10/00 - Additive manufacturing of workpieces or articles from metallic powder
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B22F 10/10 - Formation of a green body

Abstract

The present invention relates to a method for extinguishing a fire and controlling smoke by means of an electric field and, more specifically, to a fire extinguishing system, using an electric field, for extinguishing a fire and moving smoke by means of ionic wind due to neutron and ionic charge, by applying an electric field when the fire occurs. The present invention principally relates to a fire extinguishing system, using an electric field, comprising: a first electrode disposed so as to be positioned in the center of a fire; a second electrode disposed so as to be positioned in the periphery of the fire; and a power supply apparatus for supplying a power source to the first electrode and second electrode to apply an electric field to a hydrocarbon-based fire which is ionized when the fire occurs, thereby extinguishing the fire or moving smoke by means of ionic wind due to neutron and ionic charge.

IPC Classes  ?

• A62C 99/00 - Subject matter not provided for in other groups of this subclass
• A62C 3/16 - Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
• H02B 13/025 - Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect

Abstract

Disclosed are a method for producing calcium carbonate by utilizing sea water and burned shells, and calcium carbonate and a calcium agent produced thereby. The method for producing calcium carbonate by utilizing sea water and burned shells, especially, a method for producing vaterite calcium carbonate, comprises: a first step of mixing burned shells, sea water, and a sugar to elute calcium; and a second step of injecting carbon dioxide into the calcium eluate obtained through the first step to produce calcium carbonate.

IPC Classes  ?

• C01F 11/18 - Carbonates
• B01J 19/10 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor employing sonic or ultrasonic vibrations
• A61K 33/10 - CarbonatesBicarbonates
• A61P 3/02 - Nutrients, e.g. vitamins, minerals
• A23L 33/16 - Inorganic salts, minerals or trace elements

Abstract

Proposed are a smart walking aid device and method for rehabilitation of Parkinson's disease patients. According to one embodiment, a smart walking aid method using a smart walking aid device for rehabilitation of Parkinson's disease patients comprises the steps of: collecting acceleration data generated when walking by using an acceleration sensor of a sensor unit worn on both ankles of a user; counting the number of steps considered as steps by computing and processing the acceleration data collected; by using a wireless communications module, transferring the number of steps counted to a display unit worn on the user's wrist; and displaying the number of steps counted through a display of the display unit.

IPC Classes  ?

• A61B 5/11 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• G01C 22/00 - Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers or using pedometers

Abstract

Disclosed is a spirally heating submarine pipeline including: a conduit which transports a high temperature high pressure fluid from a submarine oil well; and a heating unit disposed in a spiral structure inside based on an outer circumferential surface of the conduit. The heating unit includes an electric heating wire that is installed along the spiral structure to generate heat; a heat insulator that is installed in the form of fully surrounding the electric heating wire and preserves the generated heat; and a heat insulating cap for isolating the heat insulator from the conduit or the heat insulating layer and is provided so as to increase the temperature of the flow in the pipe to prevent the production of a pipe flow interfering material when the fluid is transported in the conduit.

IPC Classes  ?

• F16L 53/38 - Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons
• E21B 36/00 - Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
• E21B 36/04 - Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
• F17D 1/18 - Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by heating
• E21B 43/01 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations

Abstract

A method for manufacturing a porous carbon material doped with a heterogeneous element and a porous carbon material doped with a heterogeneous element manufactured using the method are proposed. The method includes melting carbon precursor powder that contains one or more kinds of heterogeneous elements selected from metal and nonmetal to prepare a precursor melt; disposing a pair of metal wires in the precursor melt; and applying power to the metal wires to perform plasma-discharge, thus forming and aggregating carbon nanoparticles doped with the heterogeneous element while having a micropore and thereby forming a porous carbon material having a meso-macro hierarchical pore structure. As the heterogeneous element is bound to carbon of the carbon precursor, the carbon nanoparticles are formed in an amorphous structure while being doped with the heterogeneous element, thus increasing an active site.

IPC Classes  ?

• H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
• B01J 19/08 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor
• C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
• H01M 4/02 - Electrodes composed of, or comprising, active material
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium

Abstract

The present invention relates to a method for producing a nitrogen-carbon aggregate having a hierarchical porous structure, a nitrogen-carbon aggregate produced thereby, and a sodium-ion battery comprising same. Such present invention relates to a method for producing a nitrogen-carbon aggregate having a hierarchical porous structure, a nitrogen-carbon aggregate produced thereby, and a sodium-ion battery comprising same, the method comprising: a first step for producing a precursor solution comprising a nitrogen-containing carbon precursor; a second step for disposing a pair of metal wires in the precursor solution; and a third step for, by performing plasma discharge by applying electric power to the metal wires, thereby enabling the nitrogen to bind to the carbon of the carbon precursor, forming nitrogen-doped carbon nanoparticles having a turbostratic structure and having micropores on the surface thereof, and, by means of the aggregation of the carbon nanoparticles, forming an aggregate having a meso-macro hierarchical porous structure, wherein active sites of the aggregate are increased by means of the nitrogen doping.

IPC Classes  ?

• C01B 32/15 - Nanosized carbon materials
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium

Abstract

The present invention relates to a ship ballast water tank air flow-based power generation apparatus and an electric power supply system for a ship emergency device, and provides a ship ballast water tank air flow-based power generation apparatus and an electric power supply system for a ship emergency device, which comprise a ship ballast water tank, a turbine, and a generator and thus can be compatibly employed in all existing ships. Furthermore, the present invention enables utilization of energy generated due to air flow and thus promotes economical efficiency and convenience.

IPC Classes  ?

• B63J 3/04 - Driving of auxiliaries from power plant other than propulsion power plant
• B63J 2/10 - Ventilating-shaftsAir-scoops
• F03D 9/32 - Wind motors specially adapted for installation in particular locations on moving objects, e.g. vehicles
• F03D 3/00 - Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
• F03D 80/00 - Details, components or accessories not provided for in groups
• B63J 3/00 - Driving of auxiliaries

Abstract

The present invention relates to a method for preparing a carbon nanotube-carbon nanofiber composite, and a carbon nanotube-carbon nanofiber composite prepared thereby. The subject matters of the present invention are a method for preparing a carbon nanotube-carbon nanofiber composite, and a carbon nanotube-carbon nanofiber composite prepared thereby, the method comprising: a first step of dissolving an alkali metal precursor in a solvent to prepare an alkali metal precursor solution; a second step of dissolving a carbon-containing polymer in the alkali metal precursor solution to prepare a spinning solution; a third step of electrospinning the spinning solution to prepare carbon-containing polymer nanofibers having surfaces to which the alkali metal precursor is bound; a fourth step of heat-treating the carbon-containing polymer nanofibers to prepare carbon nanofibers having surfaces to which the alkali metal precursor is bound; and a fifth step of heat-treating the carbon nanofibers while a carbon source is supplied, so that the alkali metal precursor is activated as an alkali metal nanocatalyst, and the carbon source is bound to the surfaces of the carbon nanofibers by the nanocatalyst, and crystallizes and grows into carbon nanotubes, thereby preparing carbon nanofibers having surfaces to which the carbon nanotubes are bound.

IPC Classes  ?

• D06M 11/74 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphiteTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbidesTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with graphitic acids or their salts
• D01F 9/12 - Carbon filamentsApparatus specially adapted for the manufacture thereof
• D01D 5/00 - Formation of filaments, threads, or the like
• C01B 32/16 - Preparation

Abstract

A hard facing method for a press die, of the present invention, comprises: a preheating step of preheating a press die prepared as a base structure; a lamination step of forming a hard facing layer on the base structure by providing a high speed tool steel powder to the preheated base structure while forming a molten pool by using a laser; and a post-heat treatment step of sequentially performing a quenching step and a tempering step in a state in which the hard facing layer is formed on the base structure.

IPC Classes  ?

• B22F 7/02 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B22F 3/24 - After-treatment of workpieces or articles
• C21D 1/18 - HardeningQuenching with or without subsequent tempering
• C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
• B33Y 10/00 - Processes of additive manufacturing

Abstract

The present invention relates to a method for mass synthesis of carbon nanotubes using an alkali metal catalyst and carbon nanotubes synthesized thereby and, more specifically, to the synthesis of pure carbon nanotubes using an alkali metal catalyst based on a Group 1 element other than hydrogen, not using non-alkali metal catalysts such as iron, cobalt, and nickel. The subject matters of the present invention are a method for mass synthesis of carbon nanotubes using an alkali metal catalyst, and carbon nanotubes synthesized thereby, the method comprising the steps of: preparing a carbon source; forming an alkali metal catalyst precursor solution by dissolving, in a solvent, an alkali-metal-containing compound, which is based on an alkali metal; and spraying and heat-treating the alkali metal catalyst precursor solution while the carbon source is supplied, so that the alkali metal of the alkali metal catalyst precursor solution being sprayed agglomerates as a nanocatalyst, and the carbon source is dissolved by the nanocatalyst and crystallized to grow into carbon nanotubes and at the same time, the nanocatalyst is removed as the nanocatalyst vaporizes.

IPC Classes  ?

• C01B 32/166 - Preparation in liquid phase
• C01B 32/162 - Preparation characterised by catalysts
• B01J 23/04 - Alkali metals
• B01J 35/02 - Solids

Abstract

The present invention relates to a method for increasing the reversible capacity of an anode electrode material for alkali-ion batteries and, more specifically, to a method for increasing the reversible capacity of an anode electrode material for alkali-ion batteries, wherein, after synthesizing a carbon material in which the inside of carbon is doped by plasma with an alkali metal in a solution, the doped alkali metal is desorbed by an ether-based electrolyte to form new void spaces to maximize the storage capacity of the alkali metal, thereby allowing reversible capacity to be increased while compensating for Coulombic efficiency.

IPC Classes  ?

• H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
• C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• H01M 4/04 - Processes of manufacture in general

Abstract

The present invention relates to a hydroquinone-resorcinol complex inclusion compound and a method for capturing or storing a low-molecular gas using same, and specifically, to a hydroquinone-resorcinol complex inclusion compound that can capture or store a low-molecular gas at normal temperature and pressure, and a method for capturing or storing low molecular gas using the same. The hydroquinone-resorcinol complex inclusion compound according to the present invention has the effects of being able to: synthesize small gas molecules into an inclusion complex using low pressure, have a high gas storage amount, and maintain gas storage performance even at normal pressure or room temperature.

IPC Classes  ?

• B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
• C01B 3/00 - HydrogenGaseous mixtures containing hydrogenSeparation of hydrogen from mixtures containing itPurification of hydrogen
• C07C 39/08 - Dihydroxy benzenesAlkylated derivatives thereof
• B01J 20/26 - Synthetic macromolecular compounds

Abstract

Disclosed herein are an apparatus and method for decoding a bootstrap signal. The apparatus for decoding a bootstrap signal according to an embodiment of the present invention includes an operation unit for calculating the relative cyclic shift and the channel gain estimate of a received bootstrap signal and correcting the channel gain estimate using the relative cyclic shift, and a decoding unit for decoding the bootstrap signal using the corrected channel gain estimate.

IPC Classes  ?

• H04L 27/26 - Systems using multi-frequency codes
• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04L 25/02 - Baseband systems Details

Abstract

The present invention relates to a method for mass synthesis of carbon nanotubes and carbon nanotubes synthesized thereby and, more specifically, to a method for mass synthesis of carbon nanotubes and carbon nanotubes synthesized thereby, wherein the method enables not only the synthesis of a catalyst at a high rate through plasma generation without a separate reductant but also the continuous mass synthesis of high-purity carbon nanotubes. The technical essences of the present invention are a method for mass synthesis of carbon nanotubes and carbon nanotubes synthesized thereby, the method comprising: a first step of supplying a CNT growth material containing a carbon precursor; a second step of disposing a pair of metal wires in a solution mixed with a metal salt, and applying electric power to the metal wires to generate plasma to thereby synthesize a catalyst through a reduction of the metal salt into a metal atom; and a third step of thermally treating the CNT growth material and the catalyst to dissolve the carbon precursor in the catalyst, thereby continuously synthesizing carbon nanotubes while growing carbon nanotubes.

IPC Classes  ?

• C01B 32/164 - Preparation involving continuous processes
• B01J 23/75 - Cobalt
• B01J 23/745 - Iron
• B01J 23/755 - Nickel
• B01J 37/34 - Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves

Abstract

The present invention relates to a spirally heating submarine pipeline which can prevent wax and hydration from occurring within a submarine pipeline during fluid transportation from a subsea production plant. More specifically, the present invention relates to a technology for a spirally heating submarine pipeline wherein an electric heating wire having a semicircular cross-sectional shape is laid in a spiral structure while being arranged inside a pipeline so as not to protrude out of the outer circumferential surface of the pipeline, whereby thermal conductivity and fluid flow in the pipeline can be improved.

IPC Classes  ?

• F17D 1/18 - Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by heating
• F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
• F16L 53/38 - Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons

Abstract

A freezer is disclosed. A freezer according to an embodiment comprises: a compressor configured to discharge a refrigerant in the gas state; a condenser configured to cool and liquefy the refrigerant discharged from the compressor; a liquid-gas separator configured to primarily expand the refrigerant liquefied in the condenser to an intermediate pressure to collect the refrigerant in the liquid state and the gas state; and an evaporator which cools a predetermined space as the refrigerant in the liquid state flows from the liquid-gas separator into the evaporator and then is secondarily expanded to a final pressure and thus absorbs heat and is gasified, and which guides the refrigerant in the gas state in the liquid-gas separator to the compressor.

IPC Classes  ?

• F25B 41/00 - Fluid-circulation arrangements
• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle

Abstract

A buoy system according to one embodiment of the present invention includes a buoy body configured to provide buoyance; a fixing belt configured to fasten the buoy body to a ship structure; an auto-release unit configured to release the buoy body to be buoyed by releasing the fixing belt when a predetermined water pressure is reached; and an auto-reel chain box fixed to the ship structure, being opened in conjunction with releasing of the fixing belt, and including a chain which is reeled out when the buoy body is buoyed, wherein the auto-reel chain box comprises: a weight provided in the auto-reel chain box and being movable upward and downward according to a water pressure and buoyance; a pulley provided in the auto-reel chain box, having the chain wounded thereon and a plurality of teeth on an outer circumferential surface thereof; and a shaft having one end connected to the weight and the other end engaging with the teeth to fix the pulley and provided to be rotatable around a portion fixed in the auto-reel chain box.

IPC Classes  ?

• B63B 22/08 - Anchoring arrangements having means to release or urge to the surface a buoy on submergence thereof, e.g. to mark location of a sunken object
• B63C 7/26 - Means for indicating the location of underwater objects, e.g. sunken vessels

Abstract

22 is eluted using seawater as a solvent, so that calcium can be eluted with high efficiency using magnesium contained in seawater; the purity of calcium carbonate can be increased by using the alkaline industrial byproducts to precipitate magnesium in seawater, which disturbs the production of high-purity calcium carbonate; and vaterite-type and calcite-type calcium carbonate having high purity of 99.9% or higher can be economically manufactured by utilizing seawater instead of a high-cost solvent.

IPC Classes  ?

• C01F 11/18 - Carbonates
• C22B 26/20 - Obtaining alkaline earth metals or magnesium
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• B01D 53/62 - Carbon oxides
• B01D 53/73 - After-treatment of removed components

Abstract

The present invention relates to a lithium-carbon composite having cavities formed therein, and a method for producing same, and the technical essence thereof is that the present invention includes: a step for adding a lithium precursor to an organic solvent having an aromatic ring and mixing same; a step for arranging a pair of metal wires inside the organic solvent; a step for forming a lithium-carbon composite, in which a carbon body is doped with lithium, through plasma discharge inside a solution; and a step for annealing the lithium-carbon composite to remove the hydrogen inside the lithium-carbon composite and form cavities inside the lithium-carbon composite. Accordingly, a lithium-carbon composite can be simply synthesized using plasma discharge inside a solution, and the synthesized lithium-carbon composite can be annealed to form cavities therein and thereby enhance the lithium charging-discharging performance of a lithium secondary battery adopting the lithium-carbon composite.

IPC Classes  ?

• C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
• H01M 4/36 - Selection of substances as active materials, active masses, active liquids

Abstract

Disclosed are a device and a method for decoding a bootstrap signal. A device for decoding a bootstrap signal according to one embodiment of the present invention comprises: a calculation unit which calculates a relative cyclic shift value and a channel gain estimate of a received bootstrap signal and compensates for the channel gain estimate by using the relative cyclic shift value; and a decoding unit for decoding the bootstrap signal by using the compensated channel gain estimate.

IPC Classes  ?

• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04L 25/02 - Baseband systems Details
• H04L 27/26 - Systems using multi-frequency codes

Abstract

A terahertz (THz) probe waveguide for cancer surgery is proposed. According to one embodiment, the THz probe waveguide comprises: a tube having an inner space part; a core part accommodated in the inner space part of the tube, spaced apart at a predetermined interval from the tube, and disposed in an axial direction; and a transceiver chip formed at a rear side of the core part and having a THz-wave transmitter (Tx) and receiver (Rx) formed on a substrate so as to transmit and detect a THz wave, wherein a front end of the core part is guided to an outer side of a front end of the tube such that the THz wave transmitted from the transceiver chip can be transferred.

IPC Classes  ?

• A61B 5/05 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves

Abstract

The present invention relates to a method for preparing a two-dimensional material of which the electrical properties are improved by increasing a crystalline size by adopting an adsorption inhibitor. More specifically, disclosed is a method for preparing a two-dimensional material by using an adsorption inhibitory surface treatment, the method comprises the steps of: (1) adopting an adsorption inhibitor in a substrate having adsorption sites so as to adsorb the adsorption inhibitor thereon; (2) forming, by using atomic layer deposition, a two-dimensional material on the adsorption sites on which the adsorption inhibitor has not been adsorbed; and (3) crystallizing the formed two-dimensional material. The method for preparing a two-dimensional material by using an adsorption inhibitory surface treatment, according to the present invention, has the effects of: obtaining a two-dimensional material in the form of a thin film that is uniform with respect to a wide area; enabling a plastic material, which is vulnerable to heat, to be freely applied to a substrate as the method is performed at a low processing temperature; and increasing the crystallinity of a two-dimensional material, thereby being capable of preparing a two-dimensional material having excellent charge mobility.

IPC Classes  ?

• C23C 16/04 - Coating on selected surface areas, e.g. using masks
• C23C 16/455 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into the reaction chamber or for modifying gas flows in the reaction chamber
• C23C 16/30 - Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
• C23C 16/26 - Deposition of carbon only
• C23C 16/34 - Nitrides
• C23C 16/22 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
• C23C 16/24 - Deposition of silicon only

Abstract

An automatically detaching danger marking buoy is disclosed. A buoy system according to an embodiment of the present invention comprises: a buoy body for providing buoyancy; a retaining belt for retaining the buoy body on a ship structure; an automatically detaching device configured such that, when a predetermined water pressure is reached, the same releases the retaining by the retaining belt and allows the buoy body to automatically detach and float; and an automatic reel chain box which is retained on the ship structure, which is interlocked with the release of the retaining by the retaining belt and is accordingly opened, and which comprises a chain that is extended when the buoy body floats. The automatic reel chain box comprises: a weight provided inside the automatic reel chain box to be able to move upward/downward by means of water pressure and buoyancy; a pulley which is provided inside the automatic reel chain box, around which a chain is wound, and which has a plurality of teeth provided on the outer peripheral surface thereof; and a shaft, one end portion of which is coupled to the weight, the other end portion of which meshes with the teeth and retains the pulley, and which is provided to be able to rotate about a fixed part inside the automatic reel chain box by means of the upward/downward movement of the weight.

IPC Classes  ?

• B63C 7/26 - Means for indicating the location of underwater objects, e.g. sunken vessels
• F21W 111/047 - Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in groups for waterways for light-buoys

Abstract

The present invention relates to a tin/magnesium thin film formed on a zinc plated layer and a method for manufacturing the same. The method comprises the steps of: preparing a substrate on which a zinc plated layer is formed; physically depositing magnesium (Mg) and tin (Sn) on the surface of the zinc plated layer to form a magnesium thin film and a tin thin film; and diffusing zinc, magnesium, and tin atoms through heat treatment to form a thin film in which tin/magnesium mutual solubility and intermetallic compounds are present. Due to these features, it is possible to provide a shielding effect and sacrificial anode property by the diffusion between components and the formation of intermetallic compounds through a physical vapor deposition method and the heat treatment. Furthermore, it is possible to obtain the effect that a tin/magnesium thin film can be produced on a zinc-plated substrate stably, densely-stably and rapidly by comprehensively considering and controlling the influence of crystal orientation according to production conditions.

IPC Classes  ?

• C23C 14/58 - After-treatment
• C23C 14/16 - Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
• C23C 14/24 - Vacuum evaporation
• C23C 14/32 - Vacuum evaporation by explosionVacuum evaporation by evaporation and subsequent ionisation of the vapours
• C23C 14/34 - Sputtering
• C23C 10/28 - Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
• C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material

Abstract

The present invention relates to a battery-linked high-efficiency power management system and method for a ship and an offshore plant, the system comprising: at least one load connected to a ship; a PMS connected to a plurality of generators so as to control operation of the generators such that the main power is supplied to the load; a BMS connected to a predetermined battery pack so as to control charging/discharging of a battery within the battery pack such that auxiliary power is supplied to the load; and a BPMS operating by linking the PMS and the BMS, wherein the BPMS comprises: a communication unit for transmitting and receiving a state value of the battery or the generators from each of the BMS and the PMS; a setting information input unit for receiving, from an external user, setting information on the battery, the generators, or a heavy load request; a storage unit for mapping the received state value with the inputted setting information and storing the same; a control mode selection unit for selecting any one mode among a preset standby mode, a charge mode, a discharge mode, and a heavy load control mode on the basis of the state value and the setting information; an algorithm execution unit for executing a preset algorithm according to the selected mode. Therefore, a battery is maintained in a mostly charged state so as to supply power through the battery in a heavy load having a short time of use or a specific peak load, thereby reducing the capacity of the generators and the number of operating generators.

IPC Classes  ?

• B63J 3/00 - Driving of auxiliaries
• H02J 9/00 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting

Abstract

The present invention relates to a storage of a carbon dioxide and a production of a high-purity calcium carbonate using an indirect carbonation of alkali industrial byproducts. Particularly, the present invention provides a method for storing a carbon dioxide through the production of high-purity calcium carbonate, comprising a first step of adding a solvent to the alkali industrial byproducts to thereby elute calcium; a second step of separating the calcium eluate from the residual byproduct; a third step of performing a carbonation reaction in which carbon dioxide is introduced into the calcium eluate to thereby produce a calcium carbonate; a fourth step of separating the calcium eluate into the calcium carbonate and a solvent after the carbonation reaction; and a fifth step of reusing the solvent of the fourth step as the solvent of the first step, wherein the solvent is a chelating reagent of which the stabilization constant with calcium is smaller than the stabilization constant of calcium carbonate.

IPC Classes  ?

• B01D 53/62 - Carbon oxides
• C01F 11/18 - Carbonates

Abstract

The present invention relates to a system for preventing a welding accident by using power line-based legacy-line communication. According to the present invention, the welding machine system for preventing a welding accident by using power line-based legacy-line communication comprises: a power control unit for controlling the supply of power; a welding device for receiving power from the power control unit through a first power line; a portable welding feeder for receiving power from the welding device through a second power line and supplying a welding wire at a predetermined speed; a wearable communication unit for receiving work position information and evacuation guidance information; a sensor unit, which is attached to the portable welding feeder and detects an emergency situation of the surroundings; a first communication unit, which is attached to the portable welding feeder, receives and delivers the work position information from the wearable communication unit and emergency situation information from the sensor unit, and delivers received evacuation guidance information to the wearable communication unit; a first signal coupling unit, which delivers information outputted from the first communication unit to the second power line, and collects information delivered through the second power line and delivers the collected information to the first communication unit; a first bypass unit for delivering information between the first power line and the second power line by bypassing the welding device; a second bypass unit for delivering information between the first power line and the outside by bypassing the power control unit; and a management server for transmitting the evacuation guidance information to the second bypass unit by determining whether an emergency situation has occurred for each work position on the basis of information received from the second bypass unit.

IPC Classes  ?

• B23K 37/00 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
• B23K 9/32 - Accessories
• B23K 11/36 - Auxiliary equipment
• G08C 17/02 - Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
• B63B 9/06 - Methods of building hulls

Abstract

A prompt port facility is disclosed. The prompt port facility can comprise: a hull; a docking facility for mooring the hull at a predetermined location, and shipping or loading/unloading by using at least one crane provided on an upper part of the hull; an electricity generation module producing electricity through an electric generator arranged inside the hull, so as to supply the electricity to the outside; and a desalination module arranged inside the hull, and desalinating seawater, by using electric energy or thermal energy, so as to supply the desalinated seawater to the outside.

IPC Classes  ?

• B63B 35/44 - Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
• B63B 27/10 - Arrangement of ship-based loading or unloading equipment for cargo or passengers of cranes
• B63J 1/00 - Arrangements of installations for producing fresh water, e.g. by evaporation and condensation of sea water
• B63B 21/50 - Anchoring arrangements for special vessels, e.g. for floating drilling platforms or dredgers
• B63B 25/00 - Load-accommodating arrangements, e.g. stowing or trimmingVessels characterised thereby
• B63B 35/50 - Vessels or floating structures for aircraft
• B63B 25/16 - Load-accommodating arrangements, e.g. stowing or trimmingVessels characterised thereby for bulk goods fluid closed heat-insulated
• B63B 21/00 - Tying-upShifting, towing, or pushing equipmentAnchoring
• C02F 103/08 - Seawater, e.g. for desalination

Abstract

The present invention relates to a device for partially re-liquefying boil-off gas of liquefied natural gas for a ship, wherein the device compresses boil-off gas (BOG) generated in an LNG storage tank (100) for a ship, re-liquefies the compressed boil-off gas, and stores the re-liquefied boil-off gas. The present invention provides the configuration of a device for partially re-liquefying boil-off gas of liquefied natural gas for a ship, the device comprising: a storage tank (100) for storing LNG; a first heat exchanger (170) for exchanging heat using low-temperature heat of the low-temperature BOG boil-off gas discharged from the storage tank (100); a compressor (130) for compressing boil-off gas introduced through the first heat exchanger (170) into high-pressure gas at 250-300 bar; a branch portion (210) comprising a second channel (200) for transferring the high-pressure gas discharged from the compressor (130) to the first heat exchanger (170) and a first channel (190) for transferring the same to a precooler (120); a precooler (120) for cooling the high-pressure gas discharged through the first channel (190) to a state of -25 to 30ºC and 300 bar; a second heat exchanger (180) for additionally cooling the high-pressure gas discharged through the precooler (120) using flash gas at -162ºC; a pressure-reducing/expanding valve (140) for merging compressed gases cooled through the second heat exchanger (180) of the first channel (190) and the first heat exchanger (170) of the second channel (200) and pressure-reducing the same to an atmospheric state, thereby expanding the same; and a liquid/gas separator (160) for separating the boil-off gas that has been pressure-reduced by the pressure-reducing/expanding valve (140) into a saturated liquid and a saturated gas, transferring the flash gas to the second heat exchanger (180), and transferring the saturated liquid to the storage tank (100). The liquefaction process using the partial re-liquefaction device according to an embodiment of the present invention is a method for re-liquefying a larger amount of BOG, and the method substantially reduces the cost of the partial re-liquefaction device and provides an efficient system that reduces energy consumption.

IPC Classes  ?

• F17C 13/00 - Details of vessels or of the filling or discharging of vessels

Abstract

Disclosed is an apparatus for decreasing a thrust of a radial flow turbine. The apparatus includes a rotary shaft having an axial through-hole in the interior thereof, a rotor assembled in the rotary shaft and having a rotor hub and rotor blades formed on an outer peripheral surface thereof, a casing configured to isolate the rotary shaft and the rotor from the outside, and a shaft seal configured to maintain a seal between the rotary shaft and the casing.

IPC Classes  ?

• F01D 5/04 - Blade-carrying members, e.g. rotors for radial-flow machines or engines

Abstract

The present invention relates to a multiple moving rack configuring device for configuring a multiple moving rack device in which moving racks are provided split into modules, and for grouping each of the moving racks and synchronizing and sending same in the longitudinal direction, the lateral direction or the longitudinal and lateral directions; wherein the invention comprises moving racks (15), which are modularised into a plurality of rows or the like, together with a governor unit (11) for governing the moving racks (15), a moving rack control unit (14) and a communication unit (13), such that it is possible to reduce operating costs consequent on the modularisation of the moving racks (15), and wherein, by effecting synchronous control at a constant drive speed despite the moving racks (15) having mutually different weights, it is possible to minimise consequent shaking and twisting and facilitate movement and so shorten the overall working time. Also, in an example of the present invention, a system is provided for controlling the electrical power of moving racks that move logistical items within a factory or logistics centre, being a multiple moving rack electrical-power supply control system comprising: a fixed rack of which one or more is (are) provided on one side of the factory or logistics centre, and which is (are) provided with an integrated power control unit for converting an externally supplied alternating-current single-phase or three-phase power source into a direct-current power source such that the power source is supplied to the moving racks that move the logistical items via a power transmission connector unit, and for ascertaining and controlling the charge state of the moving racks; and the moving racks which are provided with a power-transmission connector that supplies power and with a power-receiving connector that receives power by coupling to a power connector provided on one side of the fixed rack or the moving rack, and which comprises a fastening sensing unit for checking the state of coupling between connectors, and with a moving-rack proximity-sensing unit for confirming proximity or otherwise of the fixed rack or of moving racks.

IPC Classes  ?

• B65G 1/10 - Storage devices mechanical with relatively-movable racks to facilitate insertion or removal of articles
• B65G 1/137 - Storage devices mechanical with arrangements or automatic control means for selecting which articles are to be removed
• H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
• G01R 31/02 - Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection

Abstract

The present invention relates to a high-efficiency THz receiver enabling frequency modulation. The high-efficiency THz receiver enabling frequency modulation according to the present invention comprises: an active layer; a photoconductive antenna positioned on the upper section of one side of the active layer; a nano grating antenna (NGA) formed on the photoconductive antenna; a semiconductor substrate positioned on the lower section of the other side of the active layer; and a surface plasmon coupler (SPC) positioned on the boundary surface between the substrate upper surface and the active layer, wherein the active layer is formed as an indium gallium arsenide (InGaAs) thin film or a dissimilar laminated thin film comprising an InGaAs/InAlAs multi-quantum well (MQW) layer, and the photoconductive antenna comprises: a parallel metal transmission line which extends in parallel at a certain length; central protrusions which protrude symmetrically so as to face inwardly at the central area of the parallel metal transmission line; and electrode pads which extend symmetrically on both ends of the parallel metal transmission line. The NGA is positioned on the central protrusions of the photoconductive antenna, and may have at least one pattern patterned and consecutively arranged thereon. The SPC may be positioned on the lower surface of the active layer, may have a plurality of patterns formed thereon by being periodically patterned so as to form a concentric circle, may have other forms of patterns, and may be formed of a metallic material. In addition, the high-efficiency THz receiver enabling frequency modulation according to the present invention is configured so as to be applied to a THz-wave receiver (Tx) or receiver (Rx) comprising discrete devices, or to be applied to a THz transceiver for generating and detecting a THz wave using a single photoconductive antenna on a single substrate and to be applied to a Tx and a Rx which are spaced at certain intervals and integrated on the single substrate, thereby being capable of transmitting and detecting the THz wave within the discrete devices or a single device. Due to said configuration, the high-efficiency THz receiver enabling frequency modulation according to the present invention can increase THz-wave generation and output and measurement sensitivity by integrating the NGA and the SPC. Simultaneously, the high-efficiency THz receiver is configured such that frequency can be modulated while the THz wave generated at a certain bandwidth passes through a surface plasmon resonance structure, thereby being able to have frequency selectivity.

IPC Classes  ?

• H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating

Abstract

The present invention relates to a zero voltage transceiver operating in the terahertz (THz) band. The zero voltage transceiver operating in the THz band according to the present invention includes: a substrate; a transmitter Tx disposed on the substrate, transmitting THz waves and not using a bias voltage; a receiver Rx disposed at a certain interval from the transmitter Tx and detecting the THz waves, wherein the transmitter Tx includes a metal wire that has a certain thickness and line width, and the receiver Rx includes a second active layer disposed on the substrate; and a photoconductive antenna disposed on the second active layer. Through such a configuration, the zero voltage transceiver operating in the THz band according to the present invention does not use a bias voltage and thus remarkably improves a signal to noise ratio, may use a laser pulse having low peak power, and may be safely used even when it is applied to medical diagnostic equipment to be used on the human body.

IPC Classes  ?

• H01S 5/10 - Construction or shape of the optical resonator

Abstract

The present invention relates to a floating wave power generator using a cross-flow turbine and, more particularly, to a floating wave power generator using a cross-flow turbine, capable of generating electric power by operating the turbine using rolling motion generated by waves. The floating wave power generator using a cross-flow turbine according to the present invention comprises: a floating body, which is provided with a space therein, and the front and rear of the exterior of which are in the form of a flat hull, and which floats on the sea; a case comprising first and second case parts which are provided apart from one another on either inner side of the floating body and have a fluid accommodated therein; a fluid communication tube, which is provided as a tube extending from the lower parts of the sides, which face one another, of the first and second case parts and communicating therewith, and through which the fluid flows; a cross-flow turbine installed on one inner side of the fluid communication tube so as to rotate according to the flow of the fluid through the fluid communication tube; a generator provided inside the floating body, for generating electric power by receiving the power of the cross-flow turbine; and an air communication tube, which is provided as a tube extending from the upper parts of the sides, which face one another, of the first and second case parts and communicating therewith, and through which air flows, wherein the cross-flow turbine comprises a flywheel, the fluid flowing through the fluid communication tube by rolling according to rolling motion while floating on the sea rotates the cross-flow turbine, and the generator generates the electric power by the rotation power of the cross-flow turbine.

IPC Classes  ?

• F03B 13/22 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy using wave energy using the flow of water resulting from wave movements, e.g. to drive a hydraulic motor or turbine
• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type

Abstract

The present invention relates to an energy storage apparatus and, more specifically, to an energy storage apparatus using a power generation turbine by a high-pressure working fluid in a liquid state and a compressed gas in an enclosed space. The energy storage apparatus according to the present invention comprises: a first tank for storing a working fluid in a liquid state; a second tank for storing a gas and compressing or expanding the gas by the working fluid entering/exiting same; a working fluid supply channel having one end fastened to the lower end of the first tank and the other end fastened to the lower end of the second tank so as to supply the working fluid to the second tank; a working fluid return channel having one end fastened to the lower end of the first tank and the other end fastened to the lower end of the second tank so as to return the working fluid to the first tank; a storage pump provided on the working fluid supply channel, for supplying the working fluid stored in the first tank to the second tank, thereby generating stored energy in the form of a compressed gas; and a power generation turbine provided on the working fluid return channel and rotated by the pressure of the working fluid returned by the expansion of the gas inside the second tank, thereby generating electrical energy.

IPC Classes  ?

• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type
• F04D 13/00 - Pumping installations or systems

Abstract

Disclosed are a system and a method for managing energy of a ship. The system and method for managing the energy of the ship according to one embodiment of the present invention includes: a main generation unit having a plurality of generators to supply power to loads of the ship; an emergency generation unit having a storage battery for charging electric energy generated from a wind power generation source using wind power and a solar power generation source using sunlight; a load power measurement unit for measuring the amount of used power in the loads of the ship; an environment measurement unit for measuring environmental data including seawater temperature and outdoor temperature; and a control unit for operating only one among the plurality of generators by controlling the amount of produced power of the main generation unit or the emergency generation unit according to the amount of used power measured in the load power measurement unit and the environmental data measured in the environment measurement unit.

IPC Classes  ?

• B63J 3/02 - Driving of auxiliaries from propulsion power plant
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02P 9/00 - Arrangements for controlling electric generators for the purpose of obtaining a desired output

Abstract

A terahertz band filter for filtering, in a frequency band, a terahertz wave propagating between a pair of metal plates with an upper parallel surface facing a lower parallel surface includes a sheet parallel to the upper and lower parallel surfaces, which is disposed between the metal plates and is spaced apart therefrom, and at least one slit located in the sheet to face the upper and lower parallel surfaces, wherein the sheet comprises a single slit to function as a notch filter for blocking in a specific frequency band.

IPC Classes  ?

• G02B 5/20 - Filters
• G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means

Abstract

The present invention relates to a biological treatment method for sewage and wastewater, tannery wastewater and livestock manure, and, more particularly, relates to a biological treatment method and a waste-water treatment agent for refractory wastewater, whereby not only is it possible to treat refractory wastewater biologically without any physical/chemical pre-processing but it is also possible to reduce the occurrence of the odours and the sludge which occur in the process of wastewater treatment. The biological treatment method for refractory wastewater of the present invention comprises: a step of producing a complex microbial liquid by maintaining, at between 15 and 28°C, a complex microbial liquid obtained by mixing between 0.01 and 1 percent by weight of mixed microorganisms BM-S-1 (Repository Deposit No. KCTC 11789BP), between 0.1 and 1 percent by weight of powdered chaff, between 0.1 and 1 percent by weight of powdered peat moss, between 1 and 5 percent by weight of molasses, between 0.01 and 1 percent by weight of shiitake mushroom waste wood dust and between 92 and 98 percent by weight of water; a mixed stock production step entailing the mixing of from 50 to 95 percent by weight of a culture stock with from 5 to 50 percent by weight of the complex microbial liquid; a high-temperature inoculation step in which from 0.01 to 1 part by weight of mixed microorganisms (BM-S-1) is inoculated into 100 parts by weight of the mixed stock, under high-temperature conditions of between 65°C to 85°C; a culturing step involving culturing of the mixed stock that has undergone the high-temperature inoculation; a drying step in which the cultured mixed stock is dried; a microbial starting broth production step in which the dried mixed stock is cultured in the liquid state; and a microbe activation step in which the microbe population is multiplied in order to introduce the microbial starting broth, that has undergone the microbial starting broth production step, into wastewater.

IPC Classes  ?

• C02F 3/34 - Biological treatment of water, waste water, or sewage characterised by the microorganisms used
• C12N 1/20 - BacteriaCulture media therefor
• C02F 103/24 - Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof from tanneries
• C02F 103/20 - Nature of the water, waste water, sewage or sludge to be treated from animal husbandry

Abstract

The biological treatment method for rivers and lakes using a microbial preparation of the present invention comprises: a step of producing a complex microbial liquid by maintaining, at between 18 and 30°C, a microbial liquid obtained by mixing between 0.01 and 1 percent by weight of mixed microorganisms of Repository Deposit No. KCTC 11789BP (BM-S-1), between 1 and 10 percent by weight of chaff powder, between 1 and 10 percent by weight of powdered peat moss, between 1 and 5 percent by weight of shiitake mushroom waste wood, between 1 and 10 percent by weight of molasses and a balance of water (80 to 95 percent by weight); producing a mixed stock comprising between 70 and 90 percent by weight of one or more types of culturing stock selected from the group consisting of chaff powder, peat moss powder, rice bran powder and shiitake mushroom waste wood dried dust and between 10 and 30 percent by weight of the complex microbial liquid; a high-temperature inoculation step in which from 0.01 to 1 part by weight of mixed microorganisms (BM-S-1) is inoculated into 100 parts by weight of the mixed stock, under high-temperature conditions of between 65°C to 90°C; a culturing step involving culturing of the mixed stock that has undergone the high-temperature inoculation; a drying step in which a microbial preparation is produced by drying the mixed stock that has passed through the culturing step; and an introduction step in which the microbial preparation is introduced into a polluted river or lake.

IPC Classes  ?

• C02F 3/34 - Biological treatment of water, waste water, or sewage characterised by the microorganisms used
• C12N 1/20 - BacteriaCulture media therefor
• C02F 3/00 - Biological treatment of water, waste water, or sewage
• C09K 3/32 - Materials not provided for elsewhere for treating liquid pollutants, e.g. oil, gasoline or fat

Abstract

The present invention relates to a method for manufacturing highly efficient multi-junction solar cells, and aims to address the technical subject matter of a method for manufacturing highly efficient multi-junction solar cells using II-VI compound semiconductors which is characterized by including a process consisting of growing a II-VI compound semiconductor thin film comprising no In on a GaSn substrate. Thus, light of entire wavelength band of solar light can be efficiently absorbed without requiring a material such as In, which is becoming expensive due to the expected exhaustion thereof, thereby significantly reducing the costs of fabricating a solar cell and enabling the implementation of a highly efficient solar cell at a low cost.

IPC Classes  ?

• H01L 31/042 - PV modules or arrays of single PV cells
• H01L 31/0216 - Coatings

Abstract

The present invention relates to a gravity compensator of a motor for naturally compensating load moment according to a rotation angle of a load, wherein the load moment results from the gravity torque in accordance with the rotational angle. The gravity compensator comprises: a supporting frame; a rotational shaft which is prepared to allow the rotation thereof in relation to the supporting frame; a load which is fixed to the rotational shaft and is rotated together with the rotational shaft; a driving motor which provides a rotational force to the rotational shaft to drive the rotation of the rotational shaft; and a torsion bar which has one end thereof coupled to the rotational shaft to form a rotating end that rotates together with the rotational shaft and includes the other end thereof coupled to the supporting frame to form a fixed end that does not rotate with the rotational shaft. Gravity compensation can be performed with an even simpler structure compared to the prior art, and thus the invention can be applied to a very small-sized motor.

IPC Classes  ?

• H02K 7/02 - Additional mass for increasing inertia, e.g. flywheels
• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

Abstract

The present invention relates to a floating-anode microbial fuel cell. More specifically, the present invention relates to a microbial fuel cell having an anaerobic unit, an electrode unit and an outflow unit. In this microbial fuel cell, the electrode unit includes an anode disposed to float horizontally on surface water and a cathode provided horizontally at the bottom of a cathode-reaction tank, and a separating layer for separating the cathode and the anode. The microbial fuel cell is characterised in that the cathode is immersed in, by way of example, a liquid substance containing organic matter and sewage or waste water flowing in a thin fashion horizontally in an anaerobic state, and the anode is formed in such a way that it floats horizontally on the water surface with one of its surfaces in contact with an air layer, while the other surface is in contact with the water layer on the water surface. The microbial fuel cell according to the present invention is advantageous in that it can continuously produce electric power with a high yield from the liquid substance containing organic matter such as sewage or waste water, and it allows the organic matter to be stabilised.

IPC Classes  ?

• H01M 8/16 - Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts

Abstract

Provided is a band-pass filter using a λ/4 transmission line. According to an embodiment of the present invention, a band-pass filter using a support layer formed of a semiconductor wafer, a circuit unit constructed on the support layer or between multilayered insulating layers formed on the support layer, and a λ/4 transmission line formed on the circuit unit includes: at least one miniaturized λ/4 transmission line with capacitors connected in parallel to an input/output connection portion of a coupled line with ends shorted in the diagonal direction; and a ground plane surrounding the band-pass filter.

IPC Classes  ?

• H01P 1/20 - Frequency-selective devices, e.g. filters