Abstract: Proposed is a detachable lighting device including lighting units. The positions of the lighting units are changeable along a mounting rail within an interior space. The number of the lighting units and the mounting positions of the lighting units are adjustable. Accordingly, occupants within the interior space adjust light distribution as desired by each occupant.

Abstract: A complementary thin film transistor (TFT) includes a substrate and a first TFT and a second TFT disposed on the substrate, wherein a first conductive semiconductor layer of the first TFT and a second gate electrode layer of the second TFT are disposed in the same layer and include the same material.

Abstract: A method for regenerating an amine-based, acid gas absorbent using a mixed catalyst containing silver oxide and silver carbonate includes the steps of absorbing an acid gas into an acid gas absorbent having an amine group to obtain an acid gas-absorbed absorbent; and regenerating the amine-based, acid gas absorbent by adding a catalyst mixture containing silver oxide and silver carbonate to the acid gas-absorbed absorbent and by removing the acid gas at a temperature ranging from 40° C. to 86° C. When the amine-based acid gas absorbent is an acid gas absorbent solution and when the acid gas that is absorbed into the acid gas absorbent solution is carbon dioxide, the catalyst mixture efficiently promotes decomposition of carbon dioxide-bound carbamate in the acid gas absorbent solution that absorbs the carbon dioxide through a novel catalytic reaction pathway.

Abstract: The present invention relates to a catalyst for converting CO2 to synthetic fuel such as CO using metal oxides and a conversion method using the same. The CO2 conversion catalyst according to the present invention can treat a large amount of CO2 per unit mole and is oxidized. In the reduction cycle, the catalyst has relatively high structural stability and excellent long-term stability as a catalyst, and it has excellent activity as a CO2 decomposition catalyst that can be used in a continuous flow reactor, such as for CO2 decomposition at a relatively low temperature.

Abstract: An apparatus and process are provided for electricity production and high-efficiency trapping of carbon dioxide, using carbon dioxide within combustion exhaust gas and converging technologies associated with a carbon dioxide absorption tower and a generating device using ions which uses a difference in concentration of salinity between seawater and freshwater. It is expected that enhanced electrical energy production efficiency, an effect of reducing costs for the operation of a carbon dioxide trapping process, and electricity production from carbon dioxide, which is a greenhouse gas, can be simultaneously achieved by increasing the difference in concentration using an absorbent for absorbing carbon dioxide.

Abstract: The present invention relates to a method for regenerating an acid gas absorbent using Ag2O and Ag2CO3 mixed catalyst in an acid gas absorbent regeneration process in an acid gas capture process using an amine absorbent absorbing acid gas. Regeneration method of carbon dioxide absorbent using Ag2O and Ag2CO3 mixed catalyst of the present invention promotes the decomposition of carbon dioxide-bound carbamate from the carbon dioxide-absorbed absorbent of Ag2O and Ag2CO3 mixed catalysts through a novel catalytic reaction pathway to remove efficiently.

Abstract: An apparatus and process are provided for electricity production and high-efficiency trapping of carbon dioxide, using carbon dioxide within combustion exhaust gas and converging technologies associated with a carbon dioxide absorption tower and a generating device using ions which uses a difference in concentration of salinity between seawater and freshwater. It is expected that enhanced electrical energy production efficiency, an effect of reducing costs for the operation of a carbon dioxide trapping process, and electricity production from carbon dioxide, which is a greenhouse gas, can be simultaneously achieved by increasing the difference in concentration using an absorbent for absorbing carbon dioxide.

Abstract: The present invention relates to a method in which a catalytic reaction is used in order to produce hydrocarbons from renewable starting material derived from biological organisms such as vegetable lipids, animal lipids, and lipids extracted from macroalgae and microalgae, and more specifically relates to a method for selectively making a hydrocarbon, which is suitable for making gasoline or diesel, by removing the oxygen contained in the starting material without consuming hydrogen. In the present invention, the production takes place by bringing the starting material into contact with hydrotalcite, which constitutes a catalyst, thereby removing oxygen via a decarboxylation or decarbonylation reaction; and the starting material is one or more such material selected from triglycerides, fatty acids, and fatty acid derivatives obtained from a renewable source of supply originating from a biological organism.

Abstract: The present invention relates to a method in which a catalytic reaction is used in order to produce hydrocarbons from renewable starting material derived from biological organisms such as vegetable lipids, animal lipids, and lipids extracted from macroalgae and microalgae, and more specifically relates to a method for selectively making a hydrocarbon, which is suitable for making gasoline or diesel, by removing the oxygen contained in the starting material without consuming hydrogen. In the present invention, the production takes place by bringing the starting material into contact with hydrotalcite, which constitutes a catalyst, thereby removing oxygen via a decarboxylation or decarbonylation reaction; and the starting material is one or more such material selected from triglycerides, fatty acids, and fatty acid derivatives obtained from a renewable source of supply originating from a biological organism.

Abstract: Disclosed herein is a radio frequency (RF) repeater comprising an analog signal processing unit and a digital signal processing unit, wherein the analog signal processing unit includes a filtering unit; an amplification unit on receiving side; a frequency conversion unit on receiving side; a frequency conversion unit on transmitting side; and an amplification unit on transmitting side, and the digital signal processing unit includes a receiving signal detection unit; the automatic gain control unit; a feedback signal detection unit; a feedback signal combining unit; a feedback signal elimination unit; an automatic delay control unit; and the control unit. According to the RF repeater and repeating method, installation cost is reduced, limitations in output magnitude and installation are overcome, and ensuring high output power characteristics.

Abstract: Disclosed herein is a radio frequency (RF) repeater comprising an analog signal processing unit and a digital signal processing unit, wherein the analog signal processing unit includes a filtering unit; an amplification unit on receiving side; a frequency conversion unit on receiving side; a frequency conversion unit on transmitting side; and an amplification unit on transmitting side, and the digital signal processing unit includes a receiving signal detection unit; the automatic gain control unit; a feedback signal detection unit; a feedback signal combining unit; a feedback signal elimination unit; an automatic delay control unit; and the control unit. According to the RF repeater and repeating method, installation cost is reduced, limitations in output magnitude and installation are overcome, and ensuring high output power characteristics.