Abstract: A triiodide resin (TR) tube of the present invention has a cylindrical shape. A resin exhaust preventing part is provided at a lower portion of the TR tube, and a triiodide resin is received inside the TR tube. A contaminated culture passes through the TR tube to allow an axenic culture to flow out. When a microalgae culture contaminated with bacteria passes through the TR tube filled with the triiodide resin, a pure culture of microalgae can be prepared by using the sterilizing rate of bacteria populations, which is relatively higher than that of microalgae, due to characteristics of iodine exhibiting negative polarity.

Abstract: A method may provide an agent service to a user terminal by including receiving a user instruction from the user terminal, determining whether at least one agent reply to at least one keyword included in the user instruction is able to be searched for in a database, providing at least one suggestive query to the user terminal to allow a search for the at least one agent reply, receiving at least one set of additional information with respect to the at least one suggestive query from the user terminal, and providing the at least one agent reply to the user terminal based on the at least one set of additional information.

Abstract: A medium composition for increasing the colony number or colony size of microalgae includes, as an effective component, a conditioned medium derived from culture solution during the exponential phase of microalgae in culture. A solid medium contains the medium composition. A method for increasing the colony number or colony size of microalgae includes spreading and culturing microalgae on the solid medium.

Abstract: A triiodide resin (TR) tube of the present invention has a cylindrical shape. A resin exhaust preventing part is provided at a lower portion of the TR tube, and a triiodide resin is received inside the TR tube. A contaminated culture passes through the TR tube to allow an axenic culture to flow out. When a microalgae culture contaminated with bacteria passes through the TR tube filled with the triiodide resin, a pure culture of microalgae can be prepared by using the sterilizing rate of bacteria populations, which is relatively higher than that of microalgae, due to characteristics of iodine exhibiting negative polarity.

Abstract: A method may provide an agent service to a user terminal by including receiving a user instruction from the user terminal, determining whether at least one agent reply to at least one keyword included in the user instruction is able to be searched for in a database, providing at least one suggestive query to the user terminal to allow a search for the at least one agent reply, receiving at least one set of additional information with respect to the at least one suggestive query from the user terminal, and providing the at least one agent reply to the user terminal based on the at least one set of additional information.