Abstract: A new approach for desalination and purification of sea water using refrigeration units is suggested which seems promising to provide high quantities of drinkable water with reasonable cost. The apparatus uses compression refrigeration system to provide heat at the condenser to partially evaporate the intake sea water and uses evaporator at the other side to condense the produced water vapor back to clean drinkable water. A heat recovery heat exchanger captures the heat left in the returning sea water and delivers it to the fresh intake sea water to improve the efficiency and performance. The system can be designed using different refrigerants with some providing higher efficiencies and coefficients of performance. A typical desalination system using this approach shows in theory a production of about 3.6 trillion gallons of potable/drinkable water per year with only about 100 MW electric power installed. Equivalent electrical energy (kWh/m3) consumed by different methods has been reported about 13.5-25.

Abstract: Devices, methods, and systems for monitoring, classifying and encouraging activity through the use of an accelerometer or other sensor in a toy or other accessory (such as a backpack or watch) that records activity are disclosed. The activity is classified, using various motion classification algorithms, to determine the specific types and amount of activities performed and the times and duration for which they were performed. The classified data is used in the rest of the system, which allows users to view activity history, recommendations for how to improve health, and play games in which the player's game performance is effected by their activity levels. In games and on the website, feedback is also given to users to encourage and reward exercise, while handicapping users that are not active.

Abstract: Devices, methods, and systems for monitoring, classifying and encouraging activity through the use of an accelerometer or other sensor in a toy or other accessory (such as a backpack or watch) that records activity are disclosed. The activity is classified, using various motion classification algorithms, to determine the specific types and amount of activities performed and the times and duration for which they were performed. The classified data is used in the rest of the system, which allows users to view activity history, recommendations for how to improve health, and play games in which the player's game performance is effected by their activity levels. In games and on the website, feedback is also given to users to encourage and reward exercise, while handicapping users that are not active.