OBSERVATION OF 23 SUPERNOVAE THAT EXPLODED <300 pc FROM EARTH DURING THE PAST 300 kyr

Has the Earth been exposed to numerous supernovae within the last 300 kyr?

We show that Firestone (2014) contains numerous errors in the application of past research. F14 overestimates likely nitrate and C production from moderately nearby supernovae by about four orders of magnitude. Moreover, the results are based on wrongly selected (obsolete) nitrate and C datasets. The use of correct and up-todate datasets does not confirm the claimed results. The claims in the p...

Carbon dioxide and climate over the past 300 Myr.

The link between atmospheric CO(2) levels and global warming is an axiom of current public policy, and is well supported by physicochemical experiments, by comparative planetary climatology and by geochemical modelling. Geological tests of this idea seek to compare proxies of past atmospheric CO(2) with other proxies of palaeotemperature. For at least the past 300 Myr, there is a remarkably hig...

300. RudzkiM

The paper presents an automatic method for liver vasculature segmentation in volumetric images obtained during Computed Tomography (CT) patient examination. The method, apart from the CT image, also requires an additional image containing binary liver mask. A modified multiscale vesselness filter (VF) performs vasculature detection. VF response is used to determine the starting voxels for the s...

China’s Land-Use Changes during the Past 300 Years: A Historical Perspective

Understanding the processes of historical land-use change is crucial to the research of global environmental sustainability. Here we examine and attempt to disentangle the evolutionary interactions between land-use change and its underlying causes through a historical lens. We compiled and synthesized historical land-use change and various biophysical, political, socioeconomic, and technical da...

Translation Series No. 300