Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

Abstract: The present invention relates to a bad odor removal system that is applied to a long sewage pipe, and provides a bad odor removal system for a swage pipe, and the system basically comprises: deodorizers which are installed at certain intervals on the upper part of the sewage pipe; and a bad odor ventilating device which is installed on the inside of the sewage pipe in connection with said deodorizers, and includes a cooling device, wherein an air flow blocking membrane is installed on the inside of the sewage pipe and bad odor dispersion-preventive plates that actively operate are installed on an outlet and a manhole, thereby effectively blocking all kinds of bad odors that may be generated from the entire sewage pipe.

Abstract: Disclosed is a method for preparing a deNOx catalyst for removing nitrogen oxides (NOx) included in exhaust gas and the like. One embodiment of the present invention discloses a V2O5(vanadium pentoxide)-TiO2(titanium dioxide)-based deNOx catalyst for removing nitrogen oxides through selective catalytic reduction by dry-ball-milling crystalline titanium dioxide (TiO2) powder and crystalline vanadium pentoxide (V2O5) powder.

Abstract: Disclosed is a vanadium/titania-based catalyst including natural manganese ore for removing nitrogen oxides and dioxin in a wide operating temperature range and a method of using the same. Specifically, this invention pertains to a vanadium/titania (V/TiO2)-based catalyst, including natural manganese ore, and a method for removing nitrogen oxides and dioxin over a wide operating temperature range, in which the WTiO2 catalyst for selective catalytic reduction of nitrogen oxides and removal of dioxin contained in flue gas includes 5-30 wt % of natural manganese ore.

Abstract: The present invention relates to a bad odor removal system that is applied to a long sewage pipe, and provides a bad odor removal system for a swage pipe, and the system basically comprises: deodorizers which are installed at certain intervals on the upper part of the sewage pipe; and a bad odor ventilating device which is installed on the inside of the sewage pipe in connection with said deodorizers, and includes a cooling device, wherein an air flow blocking membrane is installed on the inside of the sewage pipe and bad odor dispersion-preventive plates that actively operate are installed on an outlet and a manhole, thereby effectively blocking all kinds of bad odors that may be generated from the entire sewage pipe.

Abstract: Disclosed is a vanadium/titania-based catalyst including natural manganese ore for removing nitrogen oxides and dioxin in a wide operating temperature range and a method of using the same. Specifically, this invention pertains to a vanadium/titania (V/TiO2)-based catalyst, including natural manganese ore, and a method for removing nitrogen oxides and dioxin over a wide operating temperature range, in which the WTiO2 catalyst for selective catalytic reduction of nitrogen oxides and removal of dioxin contained in flue gas includes 5-30 wt of natural manganese ore.

Abstract: Disclosed are a method for preparing a catalyst, which has excellent nitrogen oxide-removal performance and resistance over a wide temperature range, and the use of the catalyst. According to the disclosed method, the oxidation number and surface defects of the catalyst are changed by applying artificial high energy through mechanical ball milling during the preparation process of the catalyst, instead of applying the addition of a precious metal, the deformation of a support and the use of a co-catalyst in order to increase NOx removal activity, such that activation energy for inducing redox reactions can be decreased.

Abstract: Disclosed is a method of preparing a vanadium/titania-based catalyst containing non-stoichiometric vanadium and titanium having excellent ability to remove nitrogen oxides at a wide temperature window, particularly, at a relatively low temperature window of 300° C. or lower.

Abstract: Disclosed is a vanadium/titania-based catalyst including natural manganese ore for removing nitrogen oxides and dioxin in a wide operating temperature range and a method of using the same. Specifically, this invention pertains to a vanadium/titania (V/TiO2)-based catalyst including natural manganese ore for removing nitrogen oxides and dioxin in a wide operating temperature range, in which the WTiO2 catalyst for selective catalytic reduction of nitrogen oxides and removal of dioxin contained in flue gas includes 5-30 wt % of natural manganese ore, thus exhibiting excellent activity of removing nitrogen oxides even in the low temperature range and of removing dioxin at the same time, and to a method of using the same. The catalyst of this invention has good thermal stability and thus can simultaneously manifest nitrogen oxides removal performance and dioxin removal performance superior to conventional vanadium/titania catalysts in a wide temperature range (150˜450° C.

Abstract: Disclosed are a method for preparing a catalyst, which has excellent nitrogen oxide-removal performance and resistance over a wide temperature range, and the use of the catalyst. According to the disclosed method, the oxidation number and surface defects of the catalyst are changed by applying artificial high energy through mechanical ball milling during the preparation process of the catalyst, instead of applying the addition of a precious metal, the deformation of a support and the use of a co-catalyst in order to increase NOx removal activity, such that activation energy for inducing redox reactions can be decreased.

Abstract: Disclosed is a method of preparing a vanadium/titania-based catalyst containing non-stoichiometric vanadium and titanium having excellent ability to remove nitrogen oxides at a wide temperature window, particularly, at a relatively low temperature window of 300° C. or lower.

Abstract: Disclosed is a vanadium/titania-based catalyst for removing nitrogen oxides, and a process for removing nitrogen oxides in a flue gas using the same. The vanadium/titania-based catalyst containing a vanadium trioxide and/or vanadium tetraoxide has excellent activity to remove nitrogen oxides in a wide temperature range, particularly, at the low temperature window.

Abstract: Disclosed are method and apparatus for processing stench and volatile organic compounds from a polluted air. Dust particles are removed from the polluted air. The stench of the polluted air and the volatile organic compounds are processed through a photooxidation reaction and an ozone oxidation reaction using an ozone generating UV lamp and a TiO2-based photocatalyst. A residual ozone remaining after the photooxidation reaction and the ozone oxidation reaction are completed, is removed.

Abstract: There is disclosed a method for removing nitrogen oxides of exhaust gas using natural manganese ores. In the method, ammonia is used as a reductant to selectively reduce the nitrogen oxides in the presence of a catalyst prepared from the natural manganese ores. The catalyst allows nitrogen oxides to be completely removed from exhaust gas at a relatively low temperature of 130-250° C. without discharging unreacted ammonia through oxidation reaction. The catalyst is superior in economic terms in addition to preventing the deleterious effects which occur when discharging ammonia.

Abstract: There is disclosed a method for removing nitrogen oxides of exhaust gas using natural manganese ores. In the method, ammonia is used as a reductant to selectively reduce the nitrogen oxides in the presence of a catalyst prepared from the natural manganese ores. The catalyst allows nitrogen oxides to be completely removed from exhaust gas at a relatively low temperature of 130-250° C. without discharging unreacted ammonia through oxidation reaction. The catalyst is superior in economic terms in addition to preventing the deleterious effects which occur when discharging ammonia.