Abstract: An electronic price indicator according to an embodiment includes a display displaying product information, an NFC module configured to communicate with a user terminal, a Bluetooth module configured to communicate with the user terminal, and a processor configured to control the display to display the product information received from the user terminal through the Bluetooth module. The processor is further configured to release a sleep mode when receiving an interrupt from the user terminal through the NFC module, and perform Bluetooth communication with the user terminal by initiating a scan for a predetermined period of time to receive an advertising signal from the user terminal.

Abstract: A high-pressure liquefied extract of marine algae for producing bioethanol and a method of producing the liquid extract from marine algae under high pressure, and a method of producing the bioethanol from the high-pressure liquid extract by fermentation with yeast are disclosed. According to the production method of bioethanol using marine algae, the high-pressure liquefied extract can be obtained in high yield and fermentation time can be also reduced. Consequently, the yield of bioethanol is increased. Furthermore, the method gives economical and environmentally friendly values from natural marine algae.

Abstract: A high-pressure liquefied extract of marine algae for producing bioethanol and a method of producing the liquid extract from marine algae under high pressure, and a method of producing the bioethanol from the high-pressure liquid extract by fermentation with yeast are disclosed. According to the production method of bioethanol using marine algae, the high-pressure liquefied extract can be obtained in high yield and fermentation time can be also reduced. Consequently, the yield of bioethanol is increased. Furthermore, the method gives economical and environmentally friendly values from natural marine algae.