Abstract: Proposed is a spinal cage. The spinal cage includes a bone support portion configured to be disposed between a first vertebra at an upper side and a second vertebra at a lower side to support the first vertebra, a base portion positioned at a lower side of the bone support portion to come in contact with the second vertebra, and a sidewall portion which has an upper side end connected to an edge of the bone support portion and a lower side end connected to an edge of the base portion and includes an elastic band having elasticity and inelastic bands having relatively lower elasticity or no elasticity. Therefore, subsidence of the spinal cage into vertebrae can be suppressed.

Abstract: The present disclosure relates to a bone graft material grafted with 4-hexylresorcinol affecting bone formation, the bone graft material which not only can rapidly promote bone formation by mixing hydrous ethanol having low concentration 4-hexylresorcinol dissolved therein and a base material for release control with distilled water or a salt-dissolved aqueous solution to obtain a mixed solution and precipitating a bone graft material into the mixed solution, thereby injecting 4-hexylresorcinol into the bone graft material, but also can have a consistent treatment effect by adjusting elution amount of 4-hexylresorcinol through the base material for release control, thereby allowing 4-hexylresorcinol to be slowly released during a treatment period.

Abstract: Advanced treatment method and system of ethanolamine-containing wastewater are disclosed, which perform physicochemical and biological treatment processes. The method regenerates cation exchange resin that captures ethanolamine discharged from a nuclear power plant or a thermal power station, concentrates the ethanolamine-containing wastewater to reduce the volume of the wastewater, and then treats the highly concentrated ethanolamine-containing wastewater through biological decomposition and denitrification processes. The system for treating ethanolamine-containing wastewater performs the physicochemical process (ion-exchange and resin regenerations) where the waster is concentrated, and then applies the biological process to the small amount of wastewater highly concentrated. The physicochemical process is composed of exchanging ions and eluting/concentrating ethanolamine using sodium hydroxide.

Abstract: Advanced treatment method and system of ethanolamine-containing wastewater are disclosed, which perform physicochemical and biological treatment processes. The method regenerates cation exchange resin that captures ethanolamine discharged from a nuclear power plant or a thermal power station, concentrates the ethanolamine-containing wastewater to reduce the volume of the wastewater, and then treats the highly concentrated ethanolamine-containing wastewater through biological decomposition and denitrification processes. The system for treating ethanolamine-containing wastewater performs the physicochemical process (ion-exchange and resin regenerations) where the waster is concentrated, and then applies the biological process to the small amount of wastewater highly concentrated. The physicochemical process is composed of exchanging ions and eluting/concentrating ethanolamine using sodium hydroxide.