Within the spiral, the astronomers found, are clusters of star formation marked by intense ultraviolet radiation.
The flame height, marked by visible flame radiation, remained constant at about 5.5 mm and the cross-sectional area of the flame decreased with increasing pressure.
Visible flame heights, as marked by the luminous soot radiation, initially increased with pressure, but changed little above 5 atm.
The flame height, marked by the visible soot radiation emission, was reduced by over 50% over the pressure range of 10 100 atmospheres.
When considering the parallel evolution of mandibular shape and diet, one sees clearly a two step radiation, marked by strong directional selection and divergence in the first phase 30-200 Mya) followed by stabilising selection and stasis in the second phase, after the main phyllostomid lineages (and diet specialities) appeared.
Foliar morphological and anatomical variability in E. angustifolia may be considered an adaptive advantage that enables leaves to develop and function in habitats marked by strong variations of solar radiation, air temperature and humidity.
In addition, current therapeutic modalities such as chemotherapy and radiation are marked by high toxicity, poor treatment-related side effects, and acquired resistance.
The first 10 My of the radiation were marked by strong phenotypic and ecological divergence among ancestors of modern lineages, whereas the remaining 20 My were marked by stasis around a number of probable adaptive peaks.
Acute intestinal radiation injury is marked by massive cell death in the rapidly proliferating crypt epithelium and inflammation in the lamina propria [ 3– 5].
The radiation of phyllostomid bats was marked by a complex mixture of adaptive and non-adaptive mechanisms through a period of extreme environmental changes when new ecological niches were probably emerging and disappearing quickly.
