First private spacewalk successful! What the SpaceX mission means for science
SpaceX engineer Sarah Gillis, shown here exiting the spacecraft’s hatch, made history today when she became one of the first private citizens to complete a spacewalk.Photo credit: SpaceX Polaris Dawn, the private SpaceX mission currently orbiting Earth, has already set…
Modelling the diameter growth of individual trees in the natural secondary forest in the Changbai Mountains in northeast China
Overview of the study area Baihe Forestry Department is located in Yanbian Korean Autonomous Prefecture, Jilin Province, on the northern slope of Changbai Mountain. Its geographical coordinates are 127° 53ʹ–128° 34ʹ east longitude and 42° 01ʹ–42° 48ʹ north latitude. Baihe…
Assessment of radiodensity in the arterial and venous phase does not improve the diagnosis of carotid occlusion
The first CTA was used for the reference diagnosis. However, for participants in whom the diagnosis had changed at the time of the biphasic CTA (eg, progression to occlusion), the biphasic CTA was used. All CTA exams used for the…
Corporate taxation in Spain: analysis of efficiency and revenue potential
The Spanish corporate tax system has undergone significant changes over the decades, adapting to the changing economic landscape and the country’s evolving role within the European Union. Historically, Spain’s evolution from a closed economy under dictatorship to a liberalized market…
