Abstract: An induction heating coil including a heating coil, an inverter unit configured to provide a high-frequency power to the heating coil, a driving unit configured to provide a signal used to control an operation of the inverter unit, a operation unit including a water boiling button configured to select a water boiling function, and a control unit configured, if a water boiling function selection signal is input through manipulation of the water boiling button, to vary an operating frequency of the driving unit based on an output of the heating coil, and to determine whether water contained in a vessel placed on the heating coil is boiling by use of a difference between the operating frequencies that is calculated at a predetermined period of time, so that the water boiling or the food boiling is detected during boiling water or cooking foods.

Abstract: Disclosed herein are an induction heating cooker and a control method thereof in which heating coils on which a container is located are sensed, a display unit displays a region corresponding to the heating coils on which the container is located, the displayed region is selected by a user, an output adjustment unit as to the displayed region is displayed, and output of the corresponding heating coils is adjusted by adjusting the output adjustment unit. The induction heating cooker includes heating coils to heat the container, a display unit to display the sensed container or the output adjustment unit of the heating coils, and the output adjustment unit to adjust the output of the heating coils on which the container is located.

Abstract: The strain Bacillus sp. DS11 (KCTC 0231BP) is disclosed and a phytase produced by DS11 having the following characteristics: optimum temperature: 65° C.; optimum pH: 7.0; molecular weight: 43,000 dalton; isoelectric point: 5.6; and a specified N-terminal amino acid sequence. The bacterial strain DS11 or the phytase it produces can be used as an animal feed additive.

Abstract: A water purifier using common advantages of natural and forced types operated without an external electric power source, resulting in high efficiency of water purification.