Antonio Vricella

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The shielding effectiveness of carbon nanotube reinforced concrete composite is analyzed by using a reverberation chamber. The frequency band is 0.8-8 GHz and the weight percentages of carbon nanotube are 0, 1, 3 wt%. Results highlight that about 30 mm thick of 3 wt% reinforced concrete composite is able to perform a shielding effectiveness greater than 15(More)
A lot of effort has been devoted in the last decades by technology research to realizing materials with <italic>a priori</italic> defined electromagnetic (EM) properties. One of the challenges at present is to configure the reflection coefficient (<italic>RC</italic>) of a structure so that any shape of a fixed microwave response is followed. A method for(More)
The coronary collateral circulation of 162 patients suffering from atherosclerosis and coronary insufficiency (coronary artery disease) was studied. It was found to be present in 44 patients, or 27.1%; homocoronary in 9%, intercoronary in 90.9%. As other Authors have previously reported, anastomotic circulation is more developed when the coronary occlusion(More)
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