Abstract: A method of executing multiple applications in an apparatus including a touch screen is provided. The method includes displaying a first window in which a first application is executed on the touch screen, detecting a division screen display event of the first application and a second application, and decreasing a size of the first window on the touch screen when the division screen display event is detected and displaying, together with the first window, a second window in which the second application is executed on the touch screen.

Abstract: A multiple window apparatus and method is provided. A method of displaying a plurality of display windows on a screen by using a device, the method includes displaying a first display window on the screen, receiving a user input that selects an object included in the first display window. displaying a list of applications matching a display mode of the first display window in response to the user input, and displaying a second display window including an execution result of an application selected from the list in the display mode.

Abstract: A method of displaying a plurality of pages on a screen of a terminal is provided. The method includes detecting a user's gesture that requests movement of the plurality of pages, identifying a movement mode relating to the movement of the plurality of pages, and moving and displaying a first page displayed on the screen and a second page connected to the first page displayed on the screen according to the identified movement mode, wherein the movement mode is one of a discrete mode and a continuous mode.

Abstract: Disclosed herein is a uranium ion exchange adsorption method using ultrasound. The method includes placing a slurry obtained by mixing uranium ions, sulfuric acid and an ion exchange resin into a reaction bath, and stirring the slurry in the reaction bath while simultaneously applying ultrasound to the reaction bath to allow the uranium ions to be adsorbed to the ion exchange resin through ion exchange adsorption. The method has an improved ion exchange adsorption rate of the uranium ions.

Abstract: A highly efficient uranium leaching method using ultrasound is disclosed. The uranium leaching method includes preparing black slate powder containing uranium by pulverizing black slate containing uranium, placing the black slate powder and water in a reaction bath, and performing uranium leaching by adding and mixing sulfuric acid and an oxidant with the black slate powder and water to prepare a mixture in the reaction bath while applying ultrasound to the reaction bath. In this method, uranium leaching efficiency can be maximized by adding sulfuric acid to the uranium ore while applying ultrasound thereto.

Abstract: A highly efficient uranium leaching method using ultrasound is disclosed. The uranium leaching method includes preparing black slate powder containing uranium by pulverizing black slate containing uranium, placing the black slate powder and water in a reaction bath, and performing uranium leaching by adding and mixing sulfuric acid and an oxidant with the black slate powder and water to prepare a mixture in the reaction bath while applying ultrasound to the reaction bath. In this method, uranium leaching efficiency can be maximized by adding sulfuric acid to the uranium ore while applying ultrasound thereto.

Abstract: Disclosed herein is a uranium ion exchange adsorption method using ultrasound. The method includes placing a slurry obtained by mixing uranium ions, sulfuric acid and an ion exchange resin into a reaction bath, and stirring the slurry in the reaction bath while simultaneously applying ultrasound to the reaction bath to allow the uranium ions to be adsorbed to the ion exchange resin through ion exchange adsorption. The method has an improved ion exchange adsorption rate of the uranium ions.