Abstract: The present invention discloses a method of applying electric arc furnace dust in chemical looping combustion process, and particularly a method of applying electric arc furnace dust in chemical looping combustion process without releasing of zinc vapor. The method of applying electric arc furnace dust in chemical looping combustion process comprises following steps: (1) providing an electric arc furnace dust and an inert support (Al2O3) and mixing the electric arc furnace dust and the inert support (Al2O3) to obtain a mixture of the electric arc furnace dust and the inert support (Al2O3); (2) calcining the mixture of the electric arc furnace dust and the inert support (Al2O3) with high temperature to obtain another mixture of Fe2O3, ZnAl2O4, and Al2O3; (3) applying the mixture of Fe2O3, ZnAl2O4, and Al2O3 as oxygen carrier and inert support in a chemical looping combustion process.

Abstract: The present invention discloses a method of applying electric arc furnace dust in chemical looping combustion process, and particularly a method of applying electric arc furnace dust in chemical looping combustion process without releasing of zinc vapor. The method of applying electric arc furnace dust in chemical looping combustion process comprises following steps: (1) providing an electric arc furnace dust and an inert support (Al2O3) and mixing the electric arc furnace dust and the inert support (Al2O3) to obtain a mixture of the electric arc furnace dust and the inert support (Al2O3); (2) calcining the mixture of the electric arc furnace dust and the inert support (Al2O3) with high temperature to obtain another mixture of Fe2O3, ZnAl2O4, and Al2O3; (3) applying the mixture of Fe2O3, ZnAl2O4, and Al2O3 as oxygen carrier and inert support in a chemical looping combustion process.

Abstract: A Fe—Ni compound oxide is used as an oxygen carrier for chemical looping combustion process, wherein the structure of the Fe—Ni compound oxide is a single-phase spinel structure. The method for manufacturing the Fe—Ni compound oxide of the invention includes the following steps: mixing Fe2O3 and NiO to obtain a mixing solution and ball milling the mixing solution by the solid state ball milling method; drying the mixing solution to obtain a precipitate; granulating the precipitate and then calcining the granulated precipitate to obtain the Fe—Ni compound oxide. Accordingly, the Fe—Ni compound oxide manufactured by the method of the invention is provided with high oxidation rate and high reduction rate, and capable of keeping loops and producing hydrogen gas.

Abstract: A chemical looping combustion method using a dual metal compound oxide includes the following steps: a fuel material combusting with the dual metal compound oxide in a first reactor to obtain a metal product; supplying the metal product obtained in the first reactor into a second reactor, and the metal product reacting with the air in the second reactor to obtain the dual metal compound oxide; and, supplying the dual metal compound oxide obtained in the second reactor into the first reactor. The dual metal compound oxide used in the chemical looping combustion process has high oxidation rate as well as high reduction rate so as to increase the efficiency of the chemical looping combustion process.

Abstract: A PHSRN-RGD-containing oligopeptide and a composition for promoting bone formation, which contains such oligopeptide as an effective ingredient. The oligopeptide promotes osteoblastic cell adhesion and differentiation and enhances bone regenerative ability, so that the inventive oligopeptide can be effectively used in regenerative treatment of bone tissue and periodontal tissue.

Abstract: A PHSRN-RGD-containing oligopeptide and a composition for promoting bone formation, which contains such oligopeptide as an effective ingredient. The oligopeptide promotes osteoblastic cell adhesion and differentiation and enhances bone regenerative ability, so that the inventive oligopeptide can be effectively used in regenerative treatment of bone tissue and periodontal tissue.

Abstract: A Delayed Locked Loop Circuit of DLL comprises a buffer that receives a power-down signal and an inverted signal of a first clock signal; first and second delay lines an output device that outputs signals corresponding to the output signals of the first and second delay lines respectively; a replica delay unit, a phase comparator for comparing a phase difference between the output signal of the second buffer and the output signal of the replica delay unit; and a delay line controller for controlling delay times of the first delay line and the second delay line by corresponding to a comparison result of the phase comparator. The DLL circuit is configured such that the first and second buffers are disabled when the power-down mode entry notifying signal corresponding to a power-down mode is provided.