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Solar ultraviolet B (UVB) irradiance at the Earth’s surface is increasing due to anthropogenic influences. To evaluate the effects of enhanced UVB radiation on photosynthetic characteristics of the marine diatom Phaeodactylum tricornutum, the species was exposed to four levels of UVB radiation, 0, 0.25, 0.75, and 1.50 KJ m−2 day−1 for 7 days. Effects of UVB(More)
In this paper, a novel detection algorithm based on variance detection (VD) is proposed for non-coherent impulse radio (IR) ultra-wideband (UWB) receivers. In the VD-based detection algorithm, after the received IR UWB signals are squared, their variance instead of their mean is measure to recover information bits. Computer simulations show that as compared(More)