Binary Sensors-Based Privacy-Preserved Activity Recognition of Elderly Living Alone Using an RNN.

The recent growth of the elderly population has led to the requirement for constant home monitoring as solitary living becomes popular. This protects older people who live alone from unwanted instances such as falling or deterioration caused by some diseases. However, although wearable devices and camera-based systems can provide relatively precise information about human motion, they invade the privacy of the elderly.

[Extract berberine hydrochloride by aqueous two-phase system].

Objective: To study the aqueous two-phase system which could be used for extraction of berberine hydrochloride.

Methods: Three aqueous two-phase systems were used for extraction experiment firstly, the best one was chosen from that, and then the single factor experiment and orthogonal experiment were carried out.

Results: 10 mL 95% ethanol with 10 mL 2.