摘要:
According to the present invention, unstable hydrogen of 4,4′,5,5′-tetranitro-2,2′-biimidazole, which is a promising material for insensitive high-performance molecular explosives, may be stabilized by aminoguanidium to provide di(aminoguanidium) 4,4′,5,5′-tetranitro-2,2′-biimidazole, thereby solving the hygroscopicity of 4,4′,5,5′-tetranitro-2,2′-biimidazole, and enhancing performance and insensitivity thereof.
摘要:
According to the present invention, unstable hydrogen of 4,4′,5,5′-tetranitro-2,2′-biimidazole, which is a promising material for insensitive high-performance molecular explosives, may be stabilized by aminoguanidium to provide di(aminoguanidium) 4,4′,5,5′-tetranitro-2,2′-biimidazole, thereby solving the hygroscopicity of 4,4′,5,5′-tetranitro-2,2′-biimidazole, and enhancing performance and insensitivity thereof.
摘要:
The present invention provides a method for preparing 2,4-dinitroimidazole, wherein separation of 1,4-donitroimidazole in powder form is avoided so that it is possible to eliminate allergy problems in workers and simplify the process, thereby improving process economy.
摘要:
A portable terminal and a method for providing network contents using the portable terminal are provided. The portable terminal receives contents from a network, uses information related to a destination and a pre-stored map data to search for a travel route from a start point to the destination, determines an estimated time for a user to reach the destination from the start point, and outputs travel guide information to guide the user along the travel route while outputting contents having a reproduction time corresponding to the estimated time.
摘要:
A portable terminal and a method for providing network contents using the portable terminal are provided. The portable terminal receives contents from a network, uses information related to a destination and a pre-stored map data to search for a travel route from a start point to the destination, determines an estimated time for a user to reach the destination from the start point, and outputs travel guide information to guide the user along the travel route while outputting contents having a reproduction time corresponding to the estimated time.