Many military radio frequency (RF) systems, like radar and communication systems, use a class of power amplifiers (PAs) called monolithic microwave integrated circuits (MIMIC). MMIC PAs using gallium nitride (GaN) transistors ...
Electronics & Semiconductors
May 1, 2013
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(Phys.org) —Jupiter's moon Io is the most volcanically active world in the Solar System, with hundreds of volcanoes, some erupting lava fountains up to 250 miles high. However, concentrations of volcanic activity are significantly ...
Space Exploration
Apr 4, 2013
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A new study by researchers at the University of Arizona and Northwest Missouri State University shows that standing and lying behavior can predict heat stress in cows.
Other
Mar 12, 2013
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Scientists devised a new wireless and energy autonomous sensor network using in collective buildings to monitor heating, ventilation and air conditioning and reduce energy consumption
Energy & Green Tech
Mar 4, 2013
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Running a supermarket requires a lot of electricity. Long rows of refrigerators have to be kept cool and large areas have to be lit. A new concept enables supermarket operators to cut their energy use by around 25 percent.
Energy & Green Tech
Feb 6, 2013
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Thermoelectric devices—which can either generate an electric current from a difference in temperature or use electricity to produce heating or cooling without moving parts—have been explored in the laboratory since the ...
Nanomaterials
Feb 6, 2013
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Duke University biomedical engineers have developed a new delivery system that overcomes the shortcomings of a promising class of peptide drugs – very small proteins – for treating diseases such as diabetes and cancer.
Biochemistry
Jan 28, 2013
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(Phys.org)—This month, Panasonic and Tokyo Gas announced the launch of their newest Ene-Farm home fuel cell, a product that residents can use to generate energy right from their homes. This is a smaller, cheaper, and efficient ...
Australia has started 2013 with a record-breaking heat wave that has lasted more than two weeks across many parts of the country. Temperatures have regularly gone above 48°C, with the highest recorded maximum of 49.6°C ...
Environment
Jan 18, 2013
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England's wettest year on record. Severe heat waves in Russia. Droughts in the US. The past year has been characterised by extreme weather across the world. Protecting the Amazon rainforest – one of the largest carbon reservoirs ...
Environment
Jan 10, 2013
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