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The effects of alkali-metal carbonates and nitrates on the CO2 sorption and regeneration of MgO-based sorbents were investigated in the presence of 10 vol% CO2 and 10 vol% H2O in an intermediate temperature range, 300 to 450 °C. The CO2 capture capacities of the MgO-based sorbents promoted with Na2CO3 and K2CO3 were 9.7 and 45.0 mg CO2/g sorbent, respectively. On the other hand, a MgO-based sorbent...
The TDoA (Time Difference of Arrivals) based location tracking systems using the RF and ultrasonic signals often give unacceptable errors due to the line-of-sight limitation of the ultrasonic signal. Overcoming this limitation, this paper proposes a novel TDoA based location tracking technique that explicitly exploits the ultrasonic reflection scenarios in the target location estimation. The proposed...
IEEE 802.15.4 is a global standard designed for emerging applications in low-rate wireless personal area networks (LR-WPANs). The standard provides nice features such as a beacon-enabled mode and guaranteed time slots for real-time data delivery. However, how to optimally operate those features is still an open issue. For the optimal operation of the features, this paper proposes a holistic optimization...
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