Air conditioning is an important part in building services world-wide in both commercial and residential buildings. With the general attempt to reduce the usage of fossil fuels and increase the usage of green solutions, the market for solar air conditioning is growing rapidly. Solar air conditioning combines solar thermal absorbers to transfer solar radiation into heat with heat-driven cooling ...

In this paper, we performed DTV interference test in order to measure the affected ranges of DTV service due to the operating of narrowband system as the DTV White Space Service in Korea. The Terrestrial Truncated Radio (TETRA) system was targeted as a narrowband application of DTV White Space. A series of simulations was conducted in order to estimate the effective ranges according to the oper...

Zirconia is widely used as a dental biomaterial in recent years. As zirconia undergoes transformation toughening mechanism shows increased fracture toughness and bend strength. The disadvantage of was its opaque appearance resulting compromised esthetics. To overcome the poor translucency grayish-white new translucent introduced. New has been developed to match strength with improved This artic...