A deeper phylogenetic understanding of ancient patterns of diversification would contribute to solving many problems in evolutionary biology, yet many of these phylogenies remain poorly resolved. Ancient rapid radiations pose a major challenge for phylogenetic analysis for two main reasons. First, the pattern to be deciphered, the order of divergence among lineages, tends to be supported by sma...

The goals of space radiation health research are to understand qualitatively and quantitatively the ionizing radiations present in the space environment, identify qualitatively and quantitatively the risks associated with these radiations, and discover countermeasures to mitigate these risks. The articles that follow address each of these three components of space radiation health research. Thi...

"Explosive" adaptive radiations on islands remain one of the most puzzling evolutionary phenomena and the evolutionary genetic processes behind such radiations remain unclear. Rapid morphological and ecological evolution during island radiations suggests that many genes may be under fairly strong selection, although this remains untested. Here, we report that during a rapid recent diversificati...

In the article the different kinds of radiations are considered Bremsstrahlung and magnito-bremsstrahlung Official physics considers, that the driving electric charge beams electromagnetic waves, both at positive, and at negative acceleration. The writer insists that the Bremsstrahlung is possible only, i.e. at negative acceleration of electric charge. Let's consider the elementary case, when t...

In this review article, we briefly outline our current understanding of the physics associated with HI 21-cm signal from cosmic dawn. We discuss different phases dawn as ambient gas and background radiations evolve redshift. address consequences several possible heating sources radiation on global signal. further present perspective other important aspects such power spectrum imaging. Finally, ...

Replicate radiations provide powerful comparative systems to address questions about the interplay between opportunity and innovation in driving episodes of diversification and the factors limiting their subsequent progression. However, such systems have been rarely documented at intercontinental scales. Here, we evaluate the hypothesis of multiple radiations in the genus Lupinus (Leguminosae),...