Abstract: A system and a method of controlling a fluid temperature for improving injectivity of a supercritical carbon dioxide into a stratum includes a casing part installed in a well, which is formed from a ground surface to a target stratum for injection, a grouting part formed between the casing part and a counterforted wall of the well, a cover covering an upper portion of the casing part, an injection tube inserted into the casing part through the cover and receiving the carbon dioxide injected into the injection tube, a perforation part serving as a passage allowing the carbon dioxide to flow from the injection tube to the target stratum, a packing part formed between the injection tube and an inner portion of the casing part, a heat coil part surrounding the injection tube, and a temperature adjusting unit controlling a temperature of the heat coil part.

Abstract: A clinometer including a base plate and a compass which is mounted on the base plate and can measure a strike and a dip angle. The compass includes a first case which is rotationally provided on the base plate so as to move a strike scale indicated on the rim of the compass to a certain position and a second case which is provided in the first case, and which is fixed on the base plate so as to fix a dip scale indicated on the rim of the compass at a certain position.

Abstract: Disclosed herein is an apparatus for processing leaking carbon dioxide, which is provided to a transfer line composed of pipes connected from a carbon dioxide generation facility to a carbon dioxide reservoir to process the leakage of carbon dioxide, including: a box-shaped shield case provided to cover a connection part of the pipes constituting the transfer line to prevent carbon dioxide leaking from the connection part from diffusing; and a bypasser bypassing the carbon dioxide into the shield case to the outside of the shield and storing this carbon dioxide. The apparatus is advantageous in that the diffusion of the carbon dioxide leaking from the connection part of the transfer line is blocked by the shield case, and simultaneously is supplied to the collection tank and stored therein by the bypasser, thereby preventing the leaking carbon dioxide from diffusing.

Abstract: Disclosed herein is a debris-flow simulation apparatus having a variable flume. The flume includes a plurality of flume bodies which are connected to each other in the longitudinal direction. The heights of the flume bodies can be easily adjusted, thus varying the angles of inclination of the flume bodies.

Abstract: Disclosed herein is an apparatus and method for simulating a submarine landslide. The apparatus includes an inclined flume; a plurality of sedimentary layers which are stacked on top of one another in the flume and tapped; water which is charged into the flume on the sedimentary layers in such a way that the surface of the water is formed in the flume; and a plurality of injectors which are provided in a bottom of the flume so as to be movable upwards or downwards with respect to the flume and inject gas or water into the sedimentary layer. The sedimentary layers are changed in pressure and temperature by the gas or water injected from the injectors into the sedimentary layers so that an artificial slope collapse is caused, whereby a water wave is generated in the flume.

Abstract: Provided is a method of synthesizing high-purity calcite capable of controlling a grain size thereof, by reacting an aqueous calcium chloride solution with CO2 gas under strong alkaline condition, to crystallize into white and ultra-fine grain calcite. The method of synthesizing fine-grain calcite according to the present disclosure can decrease super-saturation by producing calcite under the strong alkaline conditions, thereby suppressing generation and growth of grain, resulting in controlling the grain size. Therefore, the above method is useful in producing high-purity ultra-fine grain calcite and can control the grain size of calcite from several hundreds of nanometers to several tens of nanometers by regulating the concentration of an aqueous caustic soda solution.

Abstract: The present invention relates to a method for manufacturing an electrode module for recovery of metal ions, an electrode module for recovery of metal ions, and an apparatus for recovery of metal ions including the same. The present invention provides a method for manufacturing an electrode module for recovery of metal ions, the method including the steps of: a) preparing a first electrode part and a second electrode part for electrically adsorbing or desorbing metal ions contained in a liquid; and b) interposing an insulating layer, through which the liquid passes, between the first electrode part and the second electrode part, an electrode module for recovery of metal ions manufactured by the method, and an apparatus for recovery of metal ions including the same.

Abstract: Borehole electromagnetic exploration or tomography (EM tomography). An induction type broadband 3-component borehole magnetic measuring sensor can accurately and precisely measure a broadband magnetic field about x, y and z axes using a three-dimensional (3D) model within a borehole by monitoring natural variations in the earth's magnetic field or based on EM tomography using the borehole. The measuring sensor is applicable to energy resource fields such as petroleum and coal, mineral resources fields and civil engineering and environmental fields.

Abstract: Disclosed is a method of pre-treating molybdenite containing copper. The method includes mixing molybdenite containing copper with sulfuric acid, performing a sulfation reaction through a heating process after the mixing process is performed, performing a water leaching process by putting and stirring water after the sulfation reaction is performed, separating a cake from liquid after the water leaching process is performed, and drying the separated cake.

Abstract: The present invention relates to a coring system considering a tilt of a coring part and a method of compensating for a depth of a coring part using the same. A coring system according to the present invention includes: a coring part with a core to be filled with an object to be cored; a driving unit controlling upward/downward movement of the coring part; a rope connecting the coring part with the driving unit; and a tilt meter measuring a tilt of the coring part.

Abstract: The present invention relates to a coring system and a determining method that can determine whether accurate coring was achieved. A coring system according to the present invention includes: a coring part with a core to be filled with an object to be cored; a driving unit controlling upward/downward movement of the coring part; a rope connecting the coring part with the driving unit; and a tensiometer measuring tension in the rope.

Abstract: Disclosed is a clinocompass for measuring a strike and a dip on an irregular geological outcrop and a method of measuring the strike and the dip by using the same. Since the level meter of the clinometer is supported by providing a support force and a fixing force on an irregular geological outcrop having no exposed flat plane, the clinocompass serves as a supporting member or a fixing member for the measurement of the strike and the dip on an irregular geological outcrop having no exposed flat plane. Accordingly, the clinocompass has a structure to measure the strike and the dip suitable for the geological structure and the orientation of the outcrop having no exposed flat plane, so that the strike and the dip are usefully measured.

Abstract: Disclosed are a portable unmanned airship for magnetic survey and a magnetic survey system using the same. The portable unmanned airship includes a fuselage using buoyancy of gas and propelled by motive power of the fuselage itself; an auto-flight unit automatically guiding the fuselage; a magnetometer disposed in the fuselage and measuring magnetic force of a stratum or a surface of the earth; a wireless communication unit transmitting magnetic data obtained by the magnetometer outside; and a control module controlling operations of the auto-flight unit and the magnetometer. With this configuration, it is possible to increase total operation time and a payload capacity of the unmanned airship.

Abstract: Disclosed is a method of leaching molybdenum (Mo) from the sulfide mineral containing molybdenum (Mo) and copper (Cu) through the electrolytic oxidation scheme. The method includes dipping the sulfide mineral containing the molybdenum (Mo) and the copper (Cu) into a solution having chloride dissolved therein, loading an electrode into the solution, and then applying a current to the solution.

Abstract: Disclosed is a method of recovering a rare earth element from oxidized scrap of permanent magnet. The method includes leaching an oxidized scrap of a permanent magnet from a sulfuric acid solution, and recovering the rare earth element after precipitating the rare earth element contained in the oxidized scrap of the permanent magnet by adding sodium sulfate into the sulfuric acid solution.

Abstract: Disclosed herein is a fixture structure for reusing an underground micro-seismic sensor, including: a sensor body configured to be inserted in a borehole and having a sensing portion for sensing micro seismic event; a first fixture portion formed at one surface of the sensor body; a second fixture portion coupled to the first fixture portion and configured to be fixed to a grouting member injected into the borehole; and a separation unit installed between the first fixture portion and the second fixture portion and configured to separate the first fixture portion and the second fixture portion from each other by external force.

Abstract: Provided is a portable ultraviolet device for exploring a mineral resource. The portable ultraviolet device for exploring the mineral resource may include a body, a visible component, an ultraviolet lamp assembly, and a darkroom component. The visible component is coupled to the body to pass through the body so that a mineral resource disposed at a lower portion of the body is observed from an upper side of the body. The ultraviolet lamp assembly part is coupled to the body to emit ultraviolet rays onto the mineral resource. The darkroom component is coupled to a bottom surface of the body to surround the visible component and the ultraviolet lamp assembly and defines an external light blocking space having an openable inlet in a lower portion of the body.

Abstract: An electrowinning apparatus and method are provided. The electrowinning apparatus includes: an electrolytic cell including a body portion which has an inlet for introducing an aqueous solution containing metal ions into the body portion and a conical portion which is gradually reduced in diameter from top to bottom and disposed under the body portion; a ring-shaped cathode coupled to an inner circumferential surface of the body portion of the electrolytic cell and having an entrance hole which extends from an outer circumferential surface of the cathode through to an inner circumferential surface of the cathode and is connected to the inlet of the electrolytic cell; and a hollow anode having an upper end disposed outside the electrolytic cell and inserted into the cathode. In the electrowinning method, a metal can be recovered from an aqueous solution containing a low concentration of metal ions using the above cyclone-shaped electrowinning apparatus.

Abstract: Disclosed is an apparatus for producing low oxygen-content molybdenum powders by reducing MoO3. The apparatus includes a body, a cover to close an upper end of the body, a joint to couple the body with the cover, a bracket located in the body, and a micro-sieve located on an upper portion of the bracket. Metal Mo powders having the oxygen content of 3,000 ppm are obtained by using the apparatus for producing low oxygen-content molybdenum powders by reducing MoO3.

Abstract: The present invention provides a method for preparing nanoporous Pt/TiO2 composite particles, nanoporous Pt/TiO2 composite particles prepared by the above preparation method, and a fuel cell comprising the nanoporous Pt/TiO2 composite particles. The nanoporous Pt/TiO2 composite particles according to the present invention have a catalytic effect similar to that of commercially available Pt/carbon black and, thus, can be applied to a fuel cell.