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Security in VoIP
September 24, 2012 Editor 0
VoIP relies on packet switching, similar to the way that e-mails are sent over the Internet. The technology breaks down a voice call into bite-size information packets. Instead of keeping the switch open all the time, the information is sent and received as needed, allowing excess line capacity to be used to carry other data.
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The microwave pyrolysis of biomass
September 12, 2012 Editor 0
Microwave pyrolysis of various biomass types has been reviewed. A range of biomass types has been subjected to microwave pyrolysis under various conditions, with char, bio-oil, and a range of gases (predominantly CO2, CO, CH4 and H2) being produced
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