DERIVATION OF A PLANETARY IONOSPHERIC STORM INDEX

Derivation of a planetary ionospheric storm index

The planetary ionospheric storm index, Wp, is deduced from the numerical global ionospheric GPS-IONEX maps of the vertical total electron content, TEC, for more than half a solar cycle, 1999–2008.The TEC values are extracted from the 600 grid points of the map at latitudes 60° N to 60° S with a step of 5° and longitudes 0° to

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Bond behaviour evaluation between steel reinforcement and self-healing concrete containing non-axenic biomasses

Although steel reinforcements are used to withstand tensile forces in concrete, cracks are an unavoidable phenomenon.The presence of cracks, in fact, increases the risk for lowering the service life and durability of concrete structures.A critical issue occurs when due to splitting forces, cracks appear in concrete along the tensioned rebars which

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