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 apparatus for measuring geologic strike and dip of a formation. The apparatus includes a support plate, a first rotation plate disposed on the support plate and parallel to the support plate, the first rotation plate being rotatable parallel to the support plate, a second rotation plate hinge-coupled to the first rotation plate, the second rotation plate being rotatable about a hinge shaft, a protractor configured to read an angle between the first rotation plate and the second rotation plate; and a measuring unit including a compass disposed on the second rotation plate.

Abstract: Provided is an apparatus for extracting, analyzing, and storing gas in a drilled core on a ship.

Abstract: The present invention relates to a sequential groundwater sampler and a sampling method thereof, and more particularly, the sampler is constructed with a first pipe, a second pipe, a first cylinder unit and a second cylinder unit. The first pipe plays a role as a container for vacuum sample bottle. The first pipe is fixedly inserted to the second pipe. The second pipe is connected to the two cylinders to be moved up and down vertically while surrounding the first pipe by an advance and retreat of the second cylinder unit. The second pipe plays a role of, passing a syringe needle amounted at the end of a first piston in the first cylinder unit through a rubber plug of a vacuum sample bottle at the bottom end of the first pipe, or separating the syringe needle from the vacuum sample bottle, by an advance and retreat of the first cylinder unit. If the second cylinder and the first cylinder sequentially advance, groundwater is injected to the vacuum sample bottle at the bottom end of the first pipe.

Abstract: Provided are a method for preparing zinc oxide (ZnO) nanoparticles and a method for preparing ZnO nanofluid using the same. The method for preparing ZnO nanoparticles includes: a) heating deionized water; b) dissolving zinc (Zn) salt in the deionized water to prepare a precursor solution; c) adding solid alkali salt to the precursor solution to prepare a dispersion of ZnO nanoparticles; and d) separating the ZnO nanoparticles by solid-liquid separation and washing them with deionized water. Highly pure, crystalline ZnO nanoparticles with spherical shape and very narrow particle size distribution of 10 to 50 nm can be prepared quickly and at large scale and low cost using inexpensive materials via a stable low-temperature process, without using a dispersant. The associated low-temperature, normal-pressure process produces few harmful materials and may be easily employed for production of ZnO nanoparticles.

Abstract: Provided is a radon reduction apparatus for groundwater disinfection. The radon reduction apparatus includes an agitation space forming body that groundwater fed through a groundwater feed pipe passes through before inflow into the groundwater storage tank and that forms a water turbine installation space whose top portion is not filled with groundwater; a water turbine located in the water turbine installation space to be rotated by groundwater when the fed groundwater falls, is run against the bottom and scattered; an oxygen supply unit supplying oxygen to groundwater before inflow of the groundwater to the agitation space forming body; a ventilating fan rotated by receiving rotary power of the water turbine and connected to the water turbine installation space to discharge air of the water turbine installation space; and an antiseptic solution supply unit supplying antiseptic solution to be mixed with the groundwater.

Abstract: The present invention relates to a magnetite-birnessite mixture, to a synthesis method therefor, and to a water-treatment method using the same. The magnetite-birnessite mixture synthesis method according to the present invention includes: a first synthesis step in which magnetite is synthesized; a second synthesis step in which manganese is made to adsorb onto the surface of the magnetite by supplying manganese while maintaining a basic state in the presence of the magnetite, and then synthesizing birnessite on the surface of the magnetite by supplying an oxidizing agent and sodium, thereby synthesizing a mixture in which magnetite and birnessite are bound together; and a purification step in which the mixture of magnetite and birnessite is purified.

Abstract: Provided is a photographing apparatus for investigating a state of an outcrop. The photographing apparatus according to the present invention includes: a photographing unit photographing moving pictures or pictures; and a plurality of laser pointers outputting laser beams toward the outcrops photographed by the photographing unit to form laser points on the outcrops, wherein each laser point is disposed so that the laser beams output therefrom are output in parallel with laser beams output from other laser pointers.

Abstract: A method for extracting rare earth elements from monazite is disclosed. The method includes milling a mixture of monazite including phosphates and rare earth elements and sodium hydroxides inside a mill containing a plurality of balls to form powder by colliding the mixture into balls with each other, converting the mixture into rare earth hydroxides and sodium phosphates through the reaction occurring in the process of repeated collision, and extracting rare earth elements from the powder.

Abstract: An electrode for electric survey includes a first electrode rod having a tip portion at one end thereof; and a second electrode rod connected to a side surface of the first electrode rod. The second electrode rod is formed at one end thereof with a removing/hook portion perpendicularly connected to the side surface of the first electrode rod, and at the other end thereof with a wire connecting portion for connection with an electric wire, and has a bent portion between the removing/hook portion and the wire connecting portion. The electrode allows convenient connection of electric wires, ensures good contact with the electric wires so as to prevent easy separation of electric wires therefrom, can reduce a time for installation and removal of the electrode and measurement error, and does not necessitate use of electrical tape in installation of the electrode to thereby reduce environmental contamination due to waste tape.

Abstract: Provided is a method for remediating arsenic-contaminated soil, including: a collection step of collecting arsenic-contaminated soil; a washing step of adding the collected soil to a washing solution, which is acidic in nature and provides reducing conditions to the soil, so as to remove arsenic from the soil and transfer the removed arsenic to the washing solution; a solid-liquid separation step of separating the soil and the washing solution from each other after the washing step; and a post-treatment step of removing arsenic from the washing solution, which was separated in the solid-liquid separation step, and employing the soil for remediation.

Abstract: Disclosed herein is a uranium ion exchange adsorption method using ultrasound. The method includes placing a slurry obtained by mixing uranium ions, sulfuric acid and an ion exchange resin into a reaction bath, and stirring the slurry in the reaction bath while simultaneously applying ultrasound to the reaction bath to allow the uranium ions to be adsorbed to the ion exchange resin through ion exchange adsorption. The method has an improved ion exchange adsorption rate of the uranium ions.

Abstract: A highly efficient uranium leaching method using ultrasound is disclosed. The uranium leaching method includes preparing black slate powder containing uranium by pulverizing black slate containing uranium, placing the black slate powder and water in a reaction bath, and performing uranium leaching by adding and mixing sulfuric acid and an oxidant with the black slate powder and water to prepare a mixture in the reaction bath while applying ultrasound to the reaction bath. In this method, uranium leaching efficiency can be maximized by adding sulfuric acid to the uranium ore while applying ultrasound thereto.

Abstract: Disclosed herein is a method of producing carbonate, comprising the steps of: providing a water-containing solution including cations that are precipitated in the form of a salt after undergoing a precipitation reaction with carbonate ions; and generating carbon dioxide microbubbles having a diameter of 50 ?m or less in the water-containing solution to induce the precipitation reaction between the cations and the carbonate ions. The method is advantageous in that the carbonate produced using the microbubble system disclosed in the method can be practically used as high-priced building materials, filler for paper manufacturing, etc. and can also be used in foods, medicines and the like depending on the purity thereof, so that it can be recovered in a high yield. Further, the method is advantageous in that carbon dioxide is consumed, and cations can be effectively removed from waste water, so that it is environmentally useful.

Abstract: A system for monitoring a concentration of carbon dioxide (CO2) in an unsaturated zone of a site in which CO2 should be stored under the ground is provided which includes: a plurality of apparatuses for detecting the concentration of CO2 in the unsaturated zone, each including a cylindrical chamber buried in an unsaturated zone under the earth surface, gas introduction holes formed in the side surface of the chamber, and a CO2 concentration sensor formed through the top of the chamber so as to measure the concentration of CO2 contained in the gas in the chamber; a plurality of communication devices transmitting the CO2 concentration output from the CO2 concentration sensor; and a monitoring server storing a reference CO2 concentration every time zone and comparing the reference CO2 concentration with the measured CO2 concentrations transmitted from the communication devices to output a normal signal or an abnormal signal.

Abstract: Disclosed are an apparatus and a method of measuring porosity and permeability of a carbon dioxide underground storage medium. Both of the porosity and the permeability are measured in the state that the confining pressure is applied once. The variation characteristic in the porosity and the permeability of the core sample according to the salt precipitation occurring when supercritical carbon dioxide is injected is continuously measured. The apparatus includes a holder receiving a core sample, a pressure pump applying a confining pressure to the core sample, a gas chamber storing gas and supplying supply the stored gas to the core sample, first to third pressure gauges measuring an internal pressure of the gas chamber and front and rear portions of the holder, and a gas flow meter measuring a flow rate of gas.

Abstract: A method of analyzing a 3D geological structure using a structure index. The method includes the steps of estimating physical property values on common coordinates to calculate two or more physical property models on the same 3D grid (L×M×N); normalizing the physical property models, thus obtaining normalized physical property models which are then represented in a scatter plot of physical properties; converting distribution positions of the normalized physical property models on the scatter plot of physical properties into type angle (TA) and into type intensity (TI); determining a minimum of TI values, which classifies two or more classes on a scatter plot of the TA and TI values, to be a threshold; and analyzing the 3D geological structure based on a local extreme point and/or points in the scatter plot for the TA and TI using the threshold.

Abstract: Provided are embodiments of a section marking apparatus and method for dividing a geological survey site into one or more sections. In some embodiments, the section marking apparatus includes a case part, a fixing shaft part, a section marking part, and a driving pin part. The fixing shaft part is accommodated in the case part. The section marking part is coupled to the fixing shaft part, received in the case part, and has a marker string configured to be extracted to the outside of the case part. The driving pin part is coupled to the fixing shaft part and configured to be driven into a ground surface to secure the section marking apparatus to the ground surface. Accordingly, the section marking apparatus can be used to divide a site when the ground is flat or when the ground is uneven and/or has a slope.

Abstract: Disclosed is a method for preparing low-oxygen titanium powders. The method includes (a) separately placing titanium base powders and calcium in a deoxidation container, (b) deoxidizing the titanium base powders by heating an inner part of the deoxidation container at a temperature of 850° C. to 1050° C. so that the calcium is evaporated to make contact with the titanium base powders, (c) removing calcium oxide from surfaces of titanium powders, which are obtained by deoxidizing the titanium base powders in step (b), by washing the titanium powders, and (d) drying the titanium powders subject to the removing of the calcium oxide in step (c).

Abstract: Disclosed is a deoxidation apparatus for preparing low-oxygen titanium powders. The deoxidation apparatus includes a lower container having an open upper portion and storing an deoxidizer representing an oxygen degree higher than an oxygen degree of titanium and a melting temperature lower than a melting temperature of titanium, and an upper container coupled with the lower container on the lower container and storing titanium base powders. The upper container is provided at a lower surface thereof with a sieve, and allows the deoxidizer, which is evaporated due to heating, to make contact with the titanium base powders so that the titanium base powders are deoxidized.